A Floor of Peaceful Intentions
52 January 2019
#1
in the market!
THE LEADING TRADE MAGAZINE IN THE CONCRETE INDUSTRY
Floors Without
CONTROL JOINTS 26
WORLD OF CONCRETE Products
10
THE VETERAN’S MEMORIAL of Mount Vernon, Iowa 38
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WHAT’S INSIDE
January 2019 | Issue 1, Volume 19
Cover Photo Credit: Rubicon Photography, Inc., Mount Vernon, IA
Departments 4 Editor’s Letter 6 Legal Matters 10 World of Concrete Products 80 Foundations Q&A 98 The Last Placement
What’s Online
Cover Story
Concrete Construction Takes Hold
38 The Veteran’s Memorial of Mount Vernon, Iowa An ode to the future, a gift for the past.
Features
Paul Gudas had planned to build an 8,000-square-foot wood-framed home a few months ago, before he learned about a decades-old but relatively unknown construction method. Search: 21034675
Protecting Construction Workers’ Lungs is a Safety Issue
26 Floors Without Control Joints Getting rid of the most troublesome floor problem.
52 A Floor of Peaceful Intentions Ennis Art uses a special blend of art and science to produce fine art installations on finished concrete floors.
32 Winter Lightweight Concrete
Placing lightweight concrete can be challenging, but if you plan appropriately, it doesn’t have to be.
46 Staining Concrete Products, applications and delivering a successful project.
60 Sunrise Success A Texas concrete slipform paving contractor is taking advantage of the cool and uncongested early morning hours before sunup to start the day’s work, and end it before noontime.
Construction workers are at high risk for lung cancer and other lung diseases and should take proper care and precautions to keep healthy Search: 21028712
70 Saws and Blades Product Round-up A compilation of the latest in concrete saws and blades.
74 Specification Guides: Grinders A compilation of technical information when choosing your next grinder.
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EDITOR’S LETTER Published by AC Business Media
Greetings and
Happy New Year!
J
anuary is one of my favorite months of the year, not just because it indicates a start to a new year of opportunity, but also because the World of Concrete will commence in a week or so. I always look forward to seeing what new product and technologies exhibitors will have to offer. We take it as an opportunity to discover the latest the market has to offer contractors and allows our staff to look at what we want to present to you in future issues Concrete Contractor. With that being said, we’ve had the opportunity to get a sneak peek at what some exhibitors are introducing at the show and we’re able to share it with you. Turn to page 10 to see our expanded World of Concrete Product Preview section. If you are planning to go to the show, be sure to stop by any of the manufacturer’s booths. We’ve made it easy for you by including exhibiting company’s booth numbers with the products in this section. On page 38, learn about the latest developments in floors, where one company is making it possible to place a floor without control joints. This month, our Cover Story is a special one. Turn to page 38 to learn more about a recent project dedicated to the veteran’s of Mount Vernon, Iowa. You’ll notice a familiar name, who also writes a regular
Facebook.com/ ConcreteContractor
Advisory Board Kim Basham KB Engineering Cheyenne, Wyo.
Jim Cuviello Cuviello Concrete Polished|Stained|Crafted Stevensville, Md.
Jim Baty Concrete Foundations Association Mt. Vernon, Iowa
Chris Klemaske T.B. Penick & Sons, Inc. San Diego, Calif.
Publisher/Editorial Director Contributing Writers Senior Production Manager Art Director Audience Development Director Audience Development Manager
ROlson@ ACBusinessMedia.com (800) 538-5544
Lynne Woodworth Eric Servais Erica Finger Nikki Lawson Amy Schwandt Sean Dunphy Denise Singsime National Automotive Sales
Search: Concrete Polishing
Dennis Purinton Purinton Builders, Inc. East Granby, Conn. Craig Coppersmith, P.E. Nox-Crete Omaha, Neb.
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www.ForConstructionPros.com/Concrete PUBLICATION STAFF
Ryan Olson, Publisher/ Editorial Director
column for us, Jim Baty, executive director of the Concrete Foundations Association was involved in the project and has shared his experience with us. This year, we have added a new section to the pages of Concrete Contractor – Concrete Pavement. This section is designed to highlight case studies and latest in concrete paving technology to contractors who are involved in this type of work. Turn to page 60 to read how one pavement contractor is taking advantage of the cool and uncongested early morning hours before sunup to start the day’s work and end before noontime. Finally, if you’ll be attending the World of Concrete, don’t forget to stop by our booth, # C4129 to see our live interviews with industry leaders as well as visit with our staff. We look forward to seeing you there!
Follow us @ Concreteinsider
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Ryan Olson, (800) 538-5544, ext. 1306 rolson@ACBusinessMedia.com Kim Basham, Jim Baty, Brad Humphrey, David C. Whitlock, Joe Nasvik, Chad White Cindy Rusch April Van Etten Wendy Chady Angela Franks
ADVERTISING SALES (800) 538-5544
lwoodworth@ACBusinessMedia.com eservais@ACBusinessMedia.com efinger@ACBusinessMedia.com nlawson@ACBusinessMedia.com aschwandt@ACBusinessMedia.com sdunphy@ACBusinessMedia.com dsingsime@ACBusinessMedia.com Tom Lutzke, tlutzke@ACBusinessMedia.com (630) 484-8040
FORCONSTRUCTIONPROS.COM
Digital Operations Manager Digital Sales Manager Editor Managing Editor
Nick Raether nraether@ACBusinessMedia.com Monique Terrazas mterrazas@ACBusinessMedia.com Larry Stewart lstewart@ACBusinessMedia.com Kimberly Hegeman khegeman@ACBusinessMedia.com
CHANGE OF ADDRESS & SUBSCRIPTIONS
PO Box 3605, Northbrook, IL 60065-3605, Phone: (877) 201-3915 Fax: (847) 291-4816 • circ.ConcreteContractor@omeda.com REPRINTS Ryan Olson, (800) 538-5544, ext. 1306 , rolson@ACBusinessMedia.com LIST RENTAL Jeff Moriarty, SVP, Business & Media Solutions Infogroup, Phone: (518) 339-4511 Email: jeff.moriarty@infogroup.com AC BUSINESS MEDIA INC.
CEO CFO Editorial Director
Barry Lovette JoAnn Breuchel Greg Udelhofen
Published and copyrighted 2018 by AC Business Media. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage or retrieval system, without written permission from the publisher. CONCRETE CONTRACTOR (USPS 021-799, ISSN 1935-1887 (print); ISSN 2471-2302 (online) is published 7 times a year: January, February/March, April/May, June/July, August/September, October/November and December by AC Business Media, 201 N. Main Street, Fort Atkinson, WI 53538. Printed in the U.S.A. Periodicals postage paid at Fort Atkinson, WI, and additional entry offices. POSTMASTER: Send address changes to Concrete Contractor, PO Box 3605 Northbrook, IL 60065-3605 January 2019, Issue 1, Volume 19 One year subscription to non-qualified individuals: U.S. 1 year: $35, 2 years: $70. Canada & Mexico 1 year: $60, 2 years: $105. All other countries 1 year: $85, 2 years: $160 (payable in U.S. funds drawn on U.S. banks). Single copies available (prepaid only) $10.00 each (U.S., Canada & Mexico), $15.00 each (International). Canada Post PM40612608. Return Undeliverable Canadian Addresses to: Concrete Contractor, PO Box 25542, London, ON N6C 6B2. Printed in the U.S.A.
Concrete Contractor is the Official Media Sponsor of the CFA Foundation Company Certification Program
®
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Zero Turn for Mobility, A Fun New Spin for Pavers
info@gomaco.com ❘ www.gomaco.com Long, straight runs are nice. But many of you have curb and gutter projects with short runs, radii and corners in parking lots or tight locations. GOMACO’s Xtreme curb and gutter machines have zero-turn capabilities for maneuverability. You’ll be able to place more curb than ever before and move your machine in ways you have never moved before. You’ll be able to pour a tight radius that you could only dream of before. GOMACO’s proprietary G+ controls makes your concrete paver smoother and easier to operate. So, if you want a Zero-Turn GOMACO Paver for your next paving season, you better call now. Our worldwide distributor network and our corporate team always stand ready to serve and assist you. CONCRETE STREETS AND HIGHWAYS ❘ AIRPORT RUNWAYS ❘ CURB AND GUTTER ❘ SIDEWALKS RECREATIONAL TRAILS ❘ SAFETY BARRIER ❘ BRIDGE PARAPET ❘ BRIDGE DECKS ❘ IRRIGATION CANALS GOMACO CORPORATION IN IDA GROVE, IOWA, USA ❘ 712-364-3347 www.ForConstructionPros.com/10073152
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LEGAL MATTERS
A Look Back at 2018 and What is Likely in
2019
Let’s take a look at what happened in 2018 and what this portends for 2019.
A
s we enter the second half of Donald Trump’s presidency it is clear that things are starting to change. Mostly, this benefits concrete contractors. The U.S. Supreme Court decided at the end of last year’s term that class action waivers in employment arbitration agreements are enforceable. This decision reversed the National Labor Relations Board’s efforts to invalidate class action waivers. Effectively, this means that all employers are more likely to use arbitration agreements to avoid costly litigation. The five member NLRB is now Republican controlled which means that the Board is likely to tilt the labor/employment field in favor of employers. That is already happening in some areas. For example, in September the Board issued a proposed rule that would
make it much harder for employers to be held liable for actions of staffing companies, franchisees and related organizations. In effect, the putative joint employer must exercise actual control over terms and conditions of employment. It is likely that the proposed rule will become final this Spring. Another area where the Board is shifting is review of employer handbook provisions. The Obamaera Board was quick to assume that handbook language was ambiguous and therefore could be interpreted as violating employees’ Section 7 right to engage in protected, concerted activity. Now, however, the Board will evaluate the potential impact upon Section 7 rights and the employer’s justification for the rule/policy. The NLRB’s General Counsel issued a memorandum instructing regional offices about the new test, and the memorandum essentially concludes that many rules that were once suspect can now be considered lawful. Examples include rules protecting confidential and customer information, rules prohibiting disruptive behavior, insubordination, non-cooperation
or defamation, as well as rules prohibiting disloyalty, use of company logos and speaking on behalf of the employer without authority. Still, some employer rules will be deemed unlawful, e.g., rules requiring confidentiality about wages or working conditions and rules prohibiting the joining of outside organizations. On balance, however, these are welcome changes in the Board’s policy. The pro-employer shift can be seen at other federal agencies also. The U.S. Department of Labor recently restored the use of opinion letters to answer wagehour questions. DOL recently held public “listening sessions” to hear employer comments about overtime exemption and the minimum salary test. It is anticipated that DOL may publish a new proposed rule sometime early in 2019, although that may be delayed pending appointment of a Wage and Hour Division Administrator. It is likely that any proposed rule would adopt a minimum salary test significantly lower than that proposed under the Obama administration. Not surprising given the
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increasing attention the #MeToo phenomenon has generated, the EEOC reported a substantial increase in the number of sexual harassment claims filed. Appellate courts are increasingly finding that transgender and sexual orientation discrimination violate Title VII. This means that contractors must be especially careful dealing with these issues. Recently, a court permitted a website access lawsuit by a disabled person who claimed inability to access critical employer information about its hiring process. This suggests that contractors need to have their websites reviewed to ensure that the site is more accessible to those with disabilities. The Occupational Safety and Health Administration recently published its top 10 list of violations. Fully half of that list related directly to construction. OSHA’s top 10 for 2018: 1. Fall protection -- construction 2. Hazard Communication – general industry 3. Scaffolds – construction 4. Respiratory protection – general industry 5. Lockout/tagout – general industry 6. Ladders – construction 7. Powered industrial trucks – general industry 8. Fall protection training – construction 9. Machine guarding – general industry 10. Personal protective and lifesaving equipment – construction This list suggests that concrete contractors need to focus on safety more than ever, especially as it relates to fall protection. Finally, numerous new state and local laws will be taking effect in 2019. These include legislation regarding salary history, harassment training, criminal history, contraceptives, veterans leave, minimum wage and paid sick leave. Also, marijuana legislation continues: medical marijuana is now legal in
Missouri and Utah, and recreational use of marijuana is now legal in Michigan. Marijuana remains illegal under federal law and that does not seem likely to change while Trump is president. Naturally, this is not all that has changed or will be changing. Concrete contractors should stay tuned and pay attention.
David C. Whitlock has over 25 year’s experience in business immigration, compliance, employment counseling and training. He is the founding attorney of Whitlock Law LLC and can be reached at (404) 626-7011 or at davidcwhitlock@gmail.com.
The Advantage is
Experience For 20 years, Vacuworx has set the standard for vacuum lifting in the field. But we offer more than just the best vacuum lifting systems on the market, available to buy or rent and ready to ship when you need them. We also deliver unparalleled service and technical support, backed by experience no one can copy. Find out how much faster, safer and smarter your crew can be using Vacuworx lifting systems and put the Vacuworx Advantage to work for you.
vacuworx.com www.ForConstructionPros.com/10076453
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TRIPLE THREAT OF PRODUCTIVITY AND TRIPLE THREAT OF PRODUCTIVITY AND
VERSATILITY VERSATILITY • • • •
FINE GRADE RAKE CONCRETE FINE GRADE LASER SCREED® RAKE CONCRETE LASER SCREED®
FLAT, SLOPED, CAMBERED 3D PROJECTS FLAT, or SLOPED, CAMBERED or 3D PROJECTS
• •• •
SLAB ON GRADE SLAB ON GRADE IN FLOOR HEAT IN FLOOR HEAT
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• •• •
SLAB ON DECK SLAB DECK REBARON / MESH REBAR / MESH
Booth #C5303 Booth #C5303
www.ForConstructionPros.com/10074666
• PAVING •• PAVING AND MORE..... • AND MORE.....
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PRODUCTS
World of Concrete
PREVIEW
A compilation of products from scheduled exhibiting companies. Spin Screed Power Roller Screed
The Rugged Spin Screed • Weighs less than 100 lbs with 22’ pipe and screed • Pipe lengths up to 22’ • T-handles The electric powered Rugged Spin Screed is lightweight, quiet; simple to clean, and make rapid length changes. It works on both flat surfaces and steep slopes. The Spin Screed can be used with concrete having a 3” slump and still produce a high quality durable surface. With the Spin Screed, you’ll produce flatter concrete surfaces with less work and time. ForConstructionPros.com/10084911 World of Concrete 2019 Booth #N2350
New Diameter on Titen HD Screw Anchor Offers Optimum Performance in Cracked and Uncracked Concrete
Terrco Model 3100LP-K
BackSaver Hammer Drill Attachment
The BackSaver Hammer Drill Attachment allows the user to stand to help prevent injury. • Drills dowel bars more easily • Enables user to apply more pressure and use less energy • Attaches to two models of DeWalt hammer drills
The Terrco Model 3100LP-K features a 40 hp Kubota LP gas, four head (12 stones) floor grinder.
ForConstructionPros.com/10303330 World of Concrete 2019 Booth #N2955
ForConstructionPros.com/12028642 World of Concrete 2019 Booth #O32140
Collomix Xo Hand-held Mixers line
Simpson Strong-Tie now offers its patented, high-strength Titen HD screw anchor for concrete and masonry in 1/4" diameter. This new size offers optimum performance in both cracked and uncracked concrete, as required by the 2012 IBC for post-installed anchors. It has all the features of the original Titen HD – plus optimized thread geometry and the 1/4" diameter. • Self-undercutting • Non-expansion characteristics make it ideal for structural applications. ForConstructionPros.com/12118206 World of Concrete 2019 Booth #S10505
Cemen Tech Announces New Line of Dump Trailers
Cemen Tech has introduced two new dump trailers—the DT-100 and DT-200—to complement its line of volumetric concrete production solutions. Ideal for hauling concrete, sand, stone, mulch and other materials, these new heavy-duty one and two yard dump trailers are designed for use in residential building projects, rental yards, landscaping applications and other small- to mid-size jobs. • Fabricated with high-strength 10-gauge steel, the new DT series dump trailers come standard with a variety of premium features including a double-action hydraulic pump, adjustable relief valve and forward self-adjusting electric brakes. ForConstructionPros.com/21036745 World of Concrete 2019 Booth #C5875/#O30524
The Xo line of hand-held concrete mixers offers an ergonomic design that allows users to stand upright when mixing concrete, mortar, plaster and grout. • Xo 1 HF is a 1.4 hp model with a 10-gal. mixing capacity • Xo4 HF is a 1.7 hp model with a 17-gal. mixing capacity • Xo6 HF is a 2.1 hp model with a 24-gal. mixing capacity • Xo Duo model has counter-rotating stirrers and can mix 24 gal. • Newly developed motors and gearboxes are specially aimed to handle the concrete jobsite • Choose from a variety of mixing paddles • Hexafix system allows users to change mixer paddle tool-free ForConstructionPros.com/10840686 World of Concrete 2019 Booth #O32140
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THE WORLD OF CONCRETE. BOOTH O31752 TRY OUR FEATURED OSHA COMPLIANT CONCRETE SAWS MEDUSAW
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PRODUCTS Kato 85V-4 Compact Excavator
The 18,775-lb. 85V-4 is a zero tailswing excavator that comes standard with an additional 900-lb. counterweight for added stability. Its compact size and zero tailswing enable a 7-ft. 3-in. width for working in tight spaces. Powered by a 59.4-hp Yanmar 4TNV98 C water-cooled, Tier 4 Final diesel engine, the unit provides a 15-ft. 1-in. maximum digging depth and 14,730-lb. bucket breakout force. It features variable-displacement pumps and two-speed travel, and comes standard with auxiliary hydraulics (third line optional), A-F quick-change valve and backfill blade. Its wide, comfortable operating environment includes a ROPS-certified cab with hydraulic pilot controls and heating and A/C. Rubber or steel tracks are available. ForConstructionPros.com/20987748 World of Concrete 2019 Booth #C4111/#O30319
Minnich Stinger Concrete Vibrator
The Stinger is a 14.5-lb. double-insulated universal motor that can drive the full line of Minnich vibrator shafts and heads from 3/4 to 2 1/2 in. • Available in 15-amp (115V) • Offers a more speed range of 11,000 to 13,000 vpm • Standard quick disconnect adapts to the vibrator shafts and heads of many other manufacturers • Motor runs safely when grounded systems are compromised • Durable protective frame extends vibrator life with urethane end caps that absorb shock while supporting easy to grip handles • Provides quiet operation meeting OSHA A 29 CFR 1910.95 standards ForConstructionPros.com/20986167 World of Concrete 2019 Booth #C4213
Kraft Tool Co. Adds Gator Tools as a Signature Brand
Kraft Tool Co. purchased Gator Tools and will be adding it to the list of Kraft’s signature brands. The Gator Tools line offers high-quality concrete tools made in the USA. Gator Tools are made from Gator Loy a special aluminum alloy for toughness and strength. Kraft will continue to offer a variety of high-quality Gator Tools products including Diamond XX screeds, Float Kits, Gator Skin, and more. ForConstructionPros.com/21035975 World of Concrete 2019 Booth #S12039
Line Dragon LD100 Concrete Placing System
The updated, remote-controlled Line Dragon Concrete Placing System increases safety and reduces labor costs by replacing the need for workers to drag and manipulate the concrete pump line and placing boom. • Placer drags the end of the concrete delivery line and places the concrete while the Dragger is hooked 20 ft. back carrying excess line and keeping it out of the pouring area • Allows two men to handle 60 to 80 ft. of 4-in. hose or 40 to 50 ft. of 5-in. hose
• 1,200-lb. system is light enough to place on decking, suspended rebar mesh and just about anything you can walk on • All-wheel steer and all-wheel drive allowing the machines to travel forward, backward, left, right and oblique • Placing boom swings 360° ForConstructionPros.com/11173291 World of Concrete 2019 Booth #C6003
MQ Whiteman WTB16 Track-drive Power Buggy
The WTB-16 track-drive power buggy has an aggressive track pattern that enables it to travel through soft soils and muddy site conditions at speeds of up to 5.7 mph unloaded and 4.7 mph loaded. • Traction and durability assured by the steel-embedded ladder track design and rugged undercarriage utilizing cast ductile iron guide wheels • Powerful drive motors offer fail-safe braking • Polyethylene tub offers 16 cu. ft.(2,500 lbs.) of capacity and enables easy cleaning • 22-hp Honda GX690 engine comes with a 5-gal. fuel tank for long runtimes ForConstructionPros.com/20988957 World of Concrete 2019 Booth #C4802
Northrock Pro 2+ Concrete Vibrator
The most popular of our electric vibrators the Pro 2+ will handle from 2' to 30' of flexible shaft and can run heads from 3/4" to 2 1/2" diameter. It is available with adapters that allow it to run shafts and heads from any other manufacturers vibrator. With an amperage draw of 15 amps it runs off a standard outlet. It's heavy duty construction can provide thousands of hours of use. ForConstructionPros.com/21015896 World of Concrete 2019 Booth #S12517
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PRODUCTS Salsco TPC-96 Concrete Paver
The TPC-96 guidance-controlled concrete paver can be operated via a radio-controlled belly pack instrument box carried by an operator. • 74-hp Hatz Tier 4 diesel engine • 1.5-cu.-yd. hopper capacity • Screed comes in 48-, 72-, 96- or 120-in. widths • Follows guidance string and adjusts tracking and screed elevation automatically in auto mode • Includes three adjustable, variable-speed, pencil-type vibrators, a 4.3-in. color display with intuitive interface and rubber tracks with six idler rollers and a top drive sprocket for smooth travel ForConstructionPros.com/12303526 World of Concrete 2019 Booth #C5987
Crete-Lease 20-VOCXtra Release Agent
Cresset Chemical Company has advanced its original Crete-Lease 20-VOC-Xtra Release Agent. Engineered for use in architectural and decorative concrete applications, the proprietary blend is an special emulsion of vegetable and mineral oils in water that contains no waxes, silicones, or carcinogens. The product has been used on such highprofile projects as the stately lion relief at the MGM Grand and and the intricately decorative flood walls that were recently constructed in New Orleans.
Wirtgen SP 62i Concrete Paver
The SP 62i can precisely pave concrete in widths from 6 ft. 6 in. to 25 ft. and thicknesses of up to 18 in., or more upon customer request. • Intelligent steering and control systems ensure highly smooth operation even around tight corners • Produces slabs with a central crown up to 3% • 12 hydraulic vibrator connectors standard with the option for six more • Eco Mode automatically matches the 241-hp Deutz engine’s output to demand • Two-track, modular design offers easy transport, setup and multiple configurations • Optional interface ensures compatibility with leading 3D control systems ForConstructionPros.com/20989464 World of Concrete 2019 Booth #C5426/#B51404
Vacuworx Wireless Remote Option
DAY1 from Solomon Colors
DAY1 is a finishing aid that lubricates the surface for faster, easier finishing. DAY1 can extend workable time by 15 to 30 minutes, even under adverse conditions such as high wind, heat, or low humidity. DAY1 eliminates the need to add water to the surface which can be detrimental to the surface performance. • It can also be used to help finish shake on hardeners in low bleed water environments. • DAY1 is a safety net, giving finishers more time on the slab. • Applied during finishing, it provides a number long term of benefits to cured concrete, as well. ForConstructionPros.com/20977248 World of Concrete 2019 Booth #S11219
The new wireless remote for the SL 2 and CM 3 Vacuum Lifting Systems offers greater mounting versatility and easy operation. • Eliminates the need to route hoses and a controller to the cab of the host machine • Provides a greater range of motion and allows easy attachment to equipment other than skid steers, such as backhoes, forklifts and cranes. ForConstructionPros.com/20991724 World of Concrete 2019 Booth #O31229
• Crete- Lease 20-VOC-Xtra permits easy, stain-free removal of forms and form liners from hardened concrete, while reducing bug holes on the concrete surface • Non-toxic, non-flammable, solventless, and low odor − meeting rigid OSHA, EPA, and meets or exceeds all federal and state VOC regulations. ForConstructionPros.com/11466443 World of Concrete 2019 Booth #N1062
Oneida Air Systems Heavy-Duty Dust Deputy® Deluxe
Concrete and silica dust have finally met their match. When connected to your dust extractor, the Heavy-Duty Dust Deputy virtually eliminates filter clogging by using cyclonic force to remove over 90% of fine dust and bulk debris. Made from fully seam welded, heavy gauge steel and finished with a rust preventative powder coat, its rugged construction protects your vacuum filter from the toughest dusts like concrete and silica. Fully compliant with new OSHA silica standards. Includes mobility kit, liner bag holder, hose, and two industrial, 5-gallon dust bins. ForConstructionPros.com/20999143 World of Concrete 2019 Booth #S13549
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25+ ACI Certification Programs
Aggregate Testing Adhesive Anchor Installation Cement Testing Concrete Construction Inspection Concrete Flatwork Finishing Concrete Foundation
The American Concrete Institute has a certification program for you, whatever concrete specialty you need. Prove your knowledge, demonstrate your skills, and earn one of the industry’s most popular certifications.
Concrete Quality Management Field Concrete Testing Laboratory Concrete Testing Masonry Testing Shotcrete Construction Tilt-Up Concrete Construction
whyACIcertification.org www.ForConstructionPros.com/10071932
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PRODUCTS Putzmeister Redesigns 63Z-Meter Truck-Mounted Concrete Boom Pump
Putzmeister America, Inc. introduces a remodeled 63Z-Meter Truck-Mounted Concrete Boom Pump that will retain its Department of Transportation weight compliance as it crosses state lines. Much of the weight adjustment is due to the return of a three-section front outrigger leg design. Truck manufacturer Mack Trucks worked exclusively with Putzmeister to develop a seven-axle chassis and relocate the emissions package in order to accommodate the outrigger setup. Operators familiar with the unit will recognize the three-section design from the original 63Z-Meter. Further weight reductions were achieved with the implementation of third generation Putzmeister free-flow hydraulics.
Wacker Neuson CRT60X Hydraulic Ride-on Trowel
A Honda-approved application, the GBPH25 backpack vibrator is suited for general construction projects such as footings and stem walls, decks, driveways and stairways. Although capable of powering a flex shaft in excess of 20 ft. in length, it is typically used with shafts in the 6- to 10-ft. range. Weighing only 29 lbs., the unit's lightweight fiberglass frame includes multi-point adjustment straps for maximum comfort. Vented padding keeps the user cool. .
The 10-ft. CRT60X (CRT60-74LX) features six blades per rotor, a width of 123 in., high blade speed, hydraulic blade pitch, twospeed engine throttle and a large 12-gal. fuel tank. • 74-hp Kohler, non-DPF Tier 4 Final engine • Dual mode power steering system • Features electronic cruise control, adjustable seat, added legroom, ergonomically positioned arm rests, simple joystick controls and fully hydraulic blade pitch • Includes an easy to read display, LED lights and a built-in hydraulic wheel kit
ForConstructionPros.com/21015902 World of Concrete 2019 Booth #S13319
ForConstructionPros.com/21024077 World of Concrete 2019 Booth #O31611
ForConstructionPros.com/20990049 World of Concrete 2019 Booth #C5726
Denver Concrete Vibrator GBPH25 Backpack Vibrator
S12039
9
www.ForConstructionPros.com/10073588
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Solomon Colors Offers Innovative New Texturing Tools
Brickform - a Division of Solomon Colors, officially unveiled the new Concrete Dimensions reusable urethane stencils at the 2018 World of Concrete. Concrete Dimensions are the latest innovation for decorative concrete, allowing users to easily create crisp, defined designs in concrete. Floated into fresh concrete, Concrete Dimensions works ideally with exposed aggregate, smooth troweled, broom finished, and lightly stamped surfaces. Designed to produce detailed impressions with complete reusability, the durable urethane stencils hold up to repeated use on job after job. Floating the tool into fresh concrete and removing it once the concrete has hardened leaves a clean, attractive impression. With custom designs available, there is a Concrete Dimensions pattern for any circumstance. ForConstructionPros.com/20992832 World of Concrete 2019 Booth #O41057
Lura Roller Screed System
The Lura Roller Screed System is the only roller screed that allows you to add one tube onto the next. This means you need fewer tubes to do a much wider range of pours. The Contractors Package (pictured) is our most popular package and includes 44’ of screed tube that can change into over 15 different combinations. Yes, this package can be used to strike off concrete from 4’ wide to 40’ wide. ForConstructionPros.com/21023848 World of Concrete 2019 Booth #O32017
GelMaxx Eco-QuickGel and AquaMaxx
GelMaxx USA provides WORLDWIDE solutions for SLURRY and WATER management through our efficient and fully organic products like our renowned Eco-QuickGel and the alternate solution AquaMaxx. Both providing efficient and ecological solutions for water and slurry management. Eco-QuickGel works as an absorbing agent that has the unique ability to absorb 500 times its WEIGHT. Eco-QuickGel is the ONLY product in the market that can achieve that ratio of absorption without damaging you or the planet. AquaMaxx can be used in conjunction with Eco-QuickGel, it acts as a solids separator that isolates water from the slurry for re-use. ForConstructionPros.com/21024413 World of Concrete 2019 Booth #O31362
www.ForConstructionPros.com/10756334
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PRODUCTS Cummins X12 Engine
At 2,050 lbs., the X12 engine is designed for weight-sensitive applications. • Provides up to 500 hp and 1,700 lbs.-ft. of torque • Low-friction design for higher MPG • Maintenance intervals rival the X15 with longer oil drains and DPF maintenance beyond the first owner • Compatible with a broad choice of fully automatic, AMT and manual transmissions
Euclid Chemical Unveils New Adhesive Anchor – DURAL ICC GEL
The Euclid Chemical Company has launched a new adhesive anchoring solution, DURAL ICC GEL, which delivers market-leading temperature and creep resistance properties. A robust and reliable adhesive anchor is vital to the construction industry, as among other things it ensures that threaded rods and rebar are firmly attached to the concrete and that concrete will bond effectively to concrete. Specifiers, contractors and developers can rest assured that DURAL ICC GEL will provide the strength and bonding necessary, as it has been widely tested and been found to consistently perform. The standards to which DURAL ICC GEL has been analysed and approved include the International Code Council (ICC-ES Report 4255), NSF/ANSI Standard 61, as well as many state DOTs. • DURAL ICC GEL is one of the most highly engineered and extensively tested two-component, hybrid adhesive anchors available. This makes it an ideal choice for large-scale construction and infrastructure projects for a variety of reasons. ForConstructionPros.com/21024145 World of Concrete 2019 Booth #S10338
Max USA TwinTier RB441T
The TwinTier RB441T features faster tying speed to further increase productivity, a reduction in wire consumption and a wire tie that is shorter in height, requiring less concrete to fully cover it. • Simultaneously shoots two 19 ga. wires around rebar intersections • Wraps once to form a tie equivalent to the strength of a hand snap tie ForConstructionPros.com/21022935 World of Concrete 2019 Booth #C3019
ForConstructionPros.com/21024158 World of Concrete 2019 Booth #C7673
AmeriPolish Eco-Hard MS Mono-silicate Densifier
AmeriPolish Eco-Hard MS Mono-silicate Densifier improves surface performance and resists the harmful effects of traffic wear and weathering. AmeriPolish Eco-Hard MS dust proofs, hardens, and cures the targeted surface in order to protect against dusting, pitting, spalling, and efflorescence that can be seen on untreated concrete. AmeriPolish Eco-Hard MS is odorless, colorless, and non-toxic. Features: • Ideal for new construction, existing concrete, and burnishing-only specs • Minimizes dust for healthier indoor air quality • Odorless, non-flammable, VOC Compliant • Helps reduce efflorescence and alkali silica reaction (ASR) • Contains 30% Solids • AmeriPolish Eco-Hard MS can be used by itself or with AmeriPolish dyes and stain protectors. ForConstructionPros.com/21024657 World of Concrete 2019 Booth #O40835
The Traker from Aaron Hilbert LLC
The Traker is a manual tool for installing contraction joints in concrete slabs-onground. Compared to saw-cuts, Trak Joints are four times faster, 75% less costly, and dust free. The joints are installed early — immediately before or after bull-floating, while the concrete is highly workable. The early entry joints cause cracks to appear typically the day after placement.
The Traker uses a roll of plastic tape resting against an insertion disc. The insertion disc folds and embeds the tape into fresh concrete. The top edge of the tape is pushed slightly below the concrete surface. The tape remains in the slab to create a weakened plane. ForConstructionPros.com/21035955 World of Concrete 2019 Booth #S13108
Oztec BP-50a Backpack and RubberHead
The BP-50a backpack vibrator includes a Honda engine and a totally enclosed rotary throttle that eliminates improper setting of the engine speed and ensures optimum consolidation. • Clog-preventing kill switch conveniently located on the handle • RubberHead creates a stronger radius of action along its entire length, eliminating voids and producing a more dense concrete with a better finish ForConstructionPros.com/21024619 World of Concrete 2019 Booth #N2236
18 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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Minnich Manufacturing
LIGHT HAS NEVER BEEN TOUGHER The Stinger motor has been designed to hold it’s torque in concrete under load, runs cool, and saves on vibrator head wear and tear. Rugged, agile, and dependable. A combination only found in a Minnich flex shaft vibrator.
Booth C4213
Explore Our Entire Line of Vibrators WWW.MINNICH-MFG.COM
www.ForConstructionPros.com/10073919
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PRODUCTS Ligchine 2D Laser and 3D GPS/LPS Screeding Machines
Ligchine offers 2D laser- and 3D GPS/LPS-guided boom extension concrete screeding machines, including four wireless remote-controlled, boomoperated models. • Compact ScreedSaver II and ScreedSaver MAX 200 provide 130 and 200 sq. ft. of coverage per pass and are suitable for confined, difficult to navigate pours • Large-sized ScreedSaver PRO 220 and ScreedSaver BOSS 240 cover 220 and 240 sq. ft. per pass and include a 360° hydraulic turn system, LED lighting and touchscreen display ForConstructionPros.com/21024784 World of Concrete 2019 Booth #O32126
Novo-Gloss Trio Gloss Meter from Rhopoint Instruments
The Novo-Gloss Trio glossmeter is the ideal choice for the measurement of gloss of flat surfaces. Measuring at 20,60 and 85” (high, mid and low gloss finishes), the gloss meter features on-board statistics, rapid data transfer, CSV data output, pass/fail, user definable batches and analysis software included in the price. A gloss meter is an instrument which is used to measure the specular reflection (gloss) of a surface. Gloss is determined by projecting a beam of light at a fixed intensity and angle onto a surface and measuring the amount of reflected light at an equal but opposite angle. ForConstructionPros.com/21037133 World of Concrete 2019 Booth #C4511
Concrete Pump Supply Announces New Envirogel
Concrete Pump Supply announces new Envirogel, construction waste water solidifier. This powdered product can be used to instantly turn any wastewater or slurry into a disposable solid. One two pound bag of Envirogel can solidify roughly 20 gallons of liquid. ForConstructionPros.com/21024386 World of Concrete 2019 Booth #C6641
Find our Products at
Booth O32140 Show Dates: January 22-26, 2019
Precision Diamond Tools for Construction SHOWROOM: 20650 N 29th Pl • Suite #102, Phoenix, AZ 85050 Phone: 623-465-4572 • Fax: 623-465-4576 info@rdtusa.com • www.rdtusa.com www.ForConstructionPros.com/20993277
20 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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GOMACO Xtreme GT-3600 Curb and Gutter Machine
The Xtreme GT-3600 now includes the Xtreme package, making tight radius paving even easier and more efficient. • Xtreme steering and intelligence added to each track, along with rotary-sensored slew drives, sensored All-Track Steering and AllTrack Positioning and smart hydraulic cylinders • Smart cylinders allow the G+ control system to know the exact position of the tracks to make steering adjustments as needed • Xtreme Radius program allows for tight radii on stringline • Smart hydraulic cylinder utilized for intelligent offset when telescoping and sideshifting the mold mounting system ForConstructionPros.com/21035943 World of Concrete 2019 Booth #C5150
Somero S-15R Laser Screed
The 9,375-lb. S-15R Laser Screed has a 20-ft. telescopic boom and 10-ft.-wide vibrator for 200 sq. ft. of consolidated concrete per pass. • 18 in. of head offset combined with the flip-down plow extension enable an overall coverage area of 250 sq. ft. per pass • Multi-function LCD screen with OASIS laser control system offers diagnostics and allows operators to customize or fine-tune settings to their preference. • Location of operator area provides 360° visibility • 44.3-hp Kubota Tier 4 turbo diesel engine with 12 hours of runtime per tank ForConstructionPros.com/21027422 World of Concrete 2019 Booth #C5303
Metzger/McGuire SRG (Surface Refinement Grout)
Developed to fill/repair concrete floor surface imperfections such as air holes, pop-outs, surface pitting, scratches and gouges, etc. • Available in 7 colors to best camouflage floor surface pitting and surface imperfections. • Rapid-set formulas allows for quick access to floor areas and grinding as early as 1 hour after applications. • Low viscosity allows for penetration into very small surface pits and imperfections. • Yields a smoother, denser floor surface. • Economical, hand mix formula. ForConstructionPros.com/21024835 World of Concrete 2019 Booth #S10705
www.ForConstructionPros.com/10072690
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PRODUCTS Makita Announces Cordless Rebar Tying Solution
Brokk 170 with SmartPower Brokk, a manufacturer of remote-controlled demolition machines, introduces the Brokk 170. With SmartPowerTM — the company’s signature intelligent power management system — the new machine offers 15 percent more power than its predecessor, the Brokk 160, but retains the same compact dimensios. The Brokk 170 incorporates the revolutionary new SmartConcept™ system, which ensures improved performance and uptime. SmartConcept consists of three features: SmartPower, SmartDesign™ and SmartRemote™. • SmartPower senses when the power supply is poor or faulty then compensates before damage to components occurs. This allows contractors to use the machine with generators or unreliable power sources. • SmartDesign extends machine life and provides ease of maintenance
Makita U.S.A., Inc. has delivered a cordless tying solution for rebar with the 18V LXT Lithium-Ion Brushless Cordless Rebar Tying Tool (XRT01ZK) and Kit (XRT01TK). The new XRT01 delivers both time savings and ease-of-use. It takes the rebar tying process from two hand to single hand operation, and presents an opportunity to speed up the task for all skill levels, from apprentice to skilled journeyman. It is ideal for concrete contractors, pool and patio contractors, electricians and plumbers. • The new Rebar Tying Tool is part of LXT, which offers over 200 cordless solutions and is the world’s largest cordless tool system powered by 18V lithium-ion slidestyle batteries. • Makita 18V Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger. • The tool has a tying capacity of up to 5,300 ties of #3 x #3 diameter rebar on a single charge of an 18V LXT 5.0Ah battery, twice the run time of the leading cordless competitor in the category. ForConstructionPros.com//21035740 World of Concrete 2019 Booth #O29942
Lavina Elite
At WOC in Las Vegas in January 2019, Superabrasive, the manufacturer of Lavina line for concrete grinding and polishing, is launching an all new generation of grinders called Lavina Elite. The new series includes again a complete range of electric and propane-powered grinders from 20-inch / 500-mm up to 38-inch / 965-mm, and there will be two new Remote-Controlled electric models as well – 25-inch and 32-inch. Guided by contractors’ experience, we have implemented an array of new features that will make your grinding and polishing job easier. • Completely redesigned frames provide superior maneuverability and easy tool changes; dust-proof grinding heads protect the internal components from dust and moisture and increase service life. • The company has upgraded the belts on 20/25/30-inch models and updated the heads locking mechanism for safer tool attachment. • The Elite grinders come with integrated weights for adjusting grinding pressure.
ForConstructionPros.com/21035966 World of Concrete 2019 Booth #C4249
ForConstructionPros.com/21036510 World of Concrete 2019 Booth #O30950/#S10539
Introducing The First Battery Powered Roller Screed from Curb Roller
Pulse-Bac Introduces the New PRO SERIES Line of Vacuums
With an ever fluctuating economy and variable labor market, contractors are constantly looking to increase production without losing quality. Curb Roller Manufacturing is dedicated to providing contractors with innovative cost and labor saving solutions. The patent pending Batt Screed offers unparalleled mobility, precision, and efficiency to contractors of all sizes. The Batt Screed utilizes a rechargeable 60 volt lithium ion battery for impressive power and run time. Unlike gas, electric, and hydraulic roller screeds, the Batt Screed eliminates exhaust fumes, power cords, and hydraulic power sources. ForConstructionPros.com/21036454 World of Concrete 2019 Booth #B50906
Pulse-Bac is proud to bring you our new PRO SERIES line of vacuums. We’ve taken everything we’ve learned and you’ve told us over the last 15 years and put it into one phenomenal new vacuum head. This new series has multiple features that improve durability, longevity & usability. • New Circuit Board Design for Improved Reliability. • New Solenoids with 5X Duty Cycle. • Easy Access Fuse. • One Piece Valve Shaft. NO PINS. • And more ... ForConstructionPros.com/21037664 World of Concrete 2019 Booth #S12645
Anchor Threaded Rod and Rebar into Uncracked Concrete with Poly-Grip
Fast-curing, high-strength dowel and tie bar adhesion in full-depth concrete repairs is possible with POLY-GRIP from W. R. MEADOWS. This two-component, styrenefree, acrylic system is used for anchoring and doweling applications in uncracked concrete using threaded rod and rebar. • POLY-GRIP may be successfully used and easily dispensed in temperatures between 15° - 95° F (-9° - 35° C). • The product offers a wide service temperature range between -40° 176° F (-40° - 80° C). • It can be installed and cure in damp and water-saturated environments. ForConstructionPros.com/21036763 World of Concrete 2019 Booth #S11307
22 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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www.ForConstructionPros.com/10073969
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www.ForConstructionPros.com/10074314
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FLATWORK/SLABS
By Joe Nasvik
Floors without
CONTROL JOINTS
Getting rid of the most troublesome floor problem.
T
he quest for inexpensive joint free floors to minimize maintenance problems with floors as they age is an on-going effort by many companies. In the 1980s in Europe engineer Xavier Destree placed high dosages of steel fibers in concrete (68 lbs/cu yd.) to construct floors with joints as far apart as 100 feet. In the 1990’s Latvian concrete contractor Janis Oslejs adopted Destree’s technology. Realizing that steel fibers distribute cracks and make smaller ones—even microscopic—shrinkage remained a problem. The technology did eliminate saw-cut joints but the cost was curled dominant joints every 100 feet as wide as 1 inch. Some of his steel fiber
floors also cracked badly. So Janis and his team set out to improve the system. They applied for and won a European Union technology development grant entitled “Eureka” which provided funding for a laboratory and research. In 2008, after years of experimentation involving Northern Europe’s leading academics and many field trials, in 2008 a system for production of zero shrinkage, unlimited joint distance concrete floors called PrimXComposite was patented in the Baltics. It involves the use of a proprietary shrinkage compensating admixture which causes steel fiber in the concrete to act as prestressed reinforcement Over the next decade, PrimXComposite became a leading industrial floor system in Scandinavia and the Baltics. During that time, the system was also installed in Europe, Africa, Asia, and the Middle East. Mike Gresser, owner of Gresser Companies in Shakopee, Minn., heard
about PrimXComposite in 2013 through mutual contacts. He visited Sweden to view and walk several installed PrimX floors and was very impressed. So he became the first U.S. licensee in 2014 and today is the Master Licensee Partner for the North American market. Gresser’s second generation 50 year old company focuses on larger projects that include high tolerance industrial floors, multifamily buildings, and projects with higher barriers to entry. Gressser seeks out experienced concrete construction companies with reputations for high quality industrial floors to become licensees. In exchange for a licensing fee, they receive a large exclusive territory, training, and a comprehensive support system including design, structural engineering, and access to the patented technology and its proprietary admixtures to create zero shrinkage, joint-free floors backed by a five year warranty.
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The only joints in a “jointless floor” is a construction joint and these are carefully layed out so as to not occur in high traffic areas. Placing PrimX concrete is very close to the process used to place other flooring systems. Photo Credit: Gresser Companies
QUALITY CONTROL The system includes comprehensive quality control measures including: Sub-grade testing: Plate load testing to verify the bearing capacity the sub-base, a more demanding test than is usual in U.S. floor construction. Admixtures: PrimX supplies their own superplasticizers and shrinkage compensating admixtures. Steel Fibers: Licensees purchase steel fibers from PrimX with consistent tensile strength, size and shape. Other fibers can be substituted once quality, strength, and design are certified by PrimX. Aggregates: Licensees provide PrimX with samples of aggregate and sand from their local ready-mix producers to test and develop the PrimX concrete mix design. Most aggregates in North America are compatible and suitable to PrimXComposite. However,
in some parts of the country with poor aggregate quality, aggregates may need to be shipped in from other areas. Cement: Batch plants usually have at least one cement type that is compatible with the system, so cement is rarely brought in for a project. Cement analysis is important because it influences the design of other mix ingredients. Timing: Jim Malenich, the vice president of licensee Fessler & Bowman Inc, Flushing, Mich., a PrimX licensee in five states, says that at the beginning of a project, test data from each load is recorded on an iPad and sent in real time to support staff in Latvia. “They make suggestions about adjusting loads in real time and after placement gets started loads are checked every 5th truck,” he adds. “The goal is a very consistent setting curve load after load, making the finishing process easier.” Engineered mixes: Concrete differs around the U.S. depending on local aggregates and cements. Also, floor loads are different from project to project. Some facilities install high-rack systems while others have high equipment loads, conditions which influence design. PrimX engineers the concrete When a readymix truck arrives on site it stops at two stations; one to add admixtures and one to blow in steel fiber into the load. Shown here is the machine that blows in the right amount of steel fiber into the truck. Typically, 60 to 70 pounds of fiber are added per cubic yard of concrete. Photo Credit: Fessler & Bowman Inc
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FLATWORK/SLABS
ADVANTAGES OF JOINTLESS FLOORS • Maintenance issues usually start at control joints. No joints = No joint failures. • Owners experience less down time for maintenance. • Floor panels curl at joints, causing them to rock back and forth when forklifts pass over them. No joints = No curling. • Eliminates the cost of installing sawed control joints and joint fillers. • Facility owners pay less for forklift maintenance because floors stay flat and joints that wear out hard-tired equipment are gone. • There is less risk associated with breathing fine silica dust and compliance with new OSHA requirements during saw-cutting operations. • Fork lift operator safety is improved because bumping over thousands of curled joints per day is a leading cause of back injuries. • Flexibility of racking and equipment layout. • Flat floors stay flat.
mixes to meet each project requirement.
CONCRETE MIXES Concrete mixes are designed for good ductility and compressive strengths of 4,000 psi, but Gresser says it’s not unusual for final PrimXComposite designs to achieve strengths near the 10,000 psi range at 28 days. There isn’t anything unusual about the final mix in terms of ingredients, workability or placement. The placing-slump range of the concrete is 6 to 7 inches. Mixes include: • Local cement usually meets PrimX specs. • Large aggregate with a maximum size of 3/4 inch is typical. • Fine aggregate and sand sourced locally usually meets PrimX requirements • Superplasticizer called PrimXFlow is supplied by PrimX. What is important here is that concrete setting patterns are well established so licensees know what to expect when using this admixture. • Shrinkage-compensating admixture supplied by PrimX, called PrimXDC, expands the inner matrix of the slab after the
Steel fibers distribute evenly in fresh concrete and orient in every direction to provide threedimensional reinforcement. But Gresser says the fibers tend to lay flat on the surface and aren’t visible. His company inspects each of their floors afterwards and removes any fibers that stick above the surface. Photo Credit: Gresser Companies
initial set, putting steel fibers in a pre-stressed compression. • Steel fibers, at 1.5” long, are typically dosed at the rate of 60-68 pounds per cubic yard. The fibers must be high quality and tested to verify consistent strength. As ready-mix trucks arrive on site, they proceed to two mixing and dosing stations. The mixing takes an additional 10 to 12 minutes on site.
HOW THE PROCESS WORKS Jim Malenich, the vice president of Fessler & Bowman Inc., Flushing, Michigan a Primx franchiser and installer, says that sub-grade and sub-base preparation is a focus of the PrimXComposite floor system. It should be for any floor system but unfortunately in most slab-on-grade applications the sub-grade and sub-base do not get the
28 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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EXPERIENCE A CONCRETE DIFFERENCE WITH CUMMINS CUMMINS PERFORMANCE SERIES ENGINES: MORE WITH LESS
World of Concrete will feature two of the newest engines from the elite engine manufacturer, Cummins.
The lightest in its class, the new Cummins X12™ engine is revolutionizing the concrete industry. The X12 doesn’t just set new performance standards of medium-bore engines — it sets new performance standards for your business. Tipping the scale at just 2,050 pounds, the productivity champion leads the industry in power-toweight with up to 500 hp and 1700 lb-ft of peak torque. Cummins Off Highway Performance Series engines have removed EGR and increased performance. The Cummins B6.7 gives you improved capability with less complexity. Up to 31% more torque is at your disposal and up to 5% more power, this equals more productivity for your machine. No matter where in the world you are operating equipment, more performance with less complexity is a good thing. Whether you’re operating in a highly regulated emissions zone or in a region that requires use of high-sulfur diesel fuel. Backed by the largest support network, the X12 and the B6.7 deliver power and a bigger payload to keep you moving forward in a world that’s Always On. Move your business forward at www.cummins.com. COME SEE THE X12 AND THE B6.7 AT WORLD OF CONCRETE, BOOTH #C7673.
www.ForConstructionPros.com/10072610
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FLATWORK/SLABS
The workers shown here are conducting a “Plate Test” to determine whether the subgrade meets PrimX consolidation requirements. Thick steel plates are compressed by a hydraulic jack secured by the bucket of an excavating machine in this case. The amount the soil is compressed is measured to determine subgrade conditions. Photo Credit: Fessler & Bowman Inc
attention that is needed for a slab to perform as it is designed. We are a selfperforming concrete and civil contractor so on some of our projects we have control of the sub-grade and sub-base prior to placing the slab-on-grade, but that is not always the case. At these times the challenge is with our customer is to get them to understand the importance of the base prep. “Quality control of both the sub-grade and sub-base is a big deal and is the key to the successful installation of any slab-on-grade project,” he adds. PrimX requires a “plate test” to verify compaction. The test is somewhat unusual in the U.S. for checking base compaction, but available in most markets. To perform, the test engineers place a 12 inch diameter steel disk approximately 1 inch thick on the ground and use a hydraulic jacking device to put a measured force on the disk. The disk is monitored by depth gauges to determine movement in the sub-grade. Movement beyond a certain limit means the sub-grade won’t properly support the concrete floor. The base requirement is 150-200 pci depending on design, a standard ACI sub-base recommendation. This requirement is not extraordinary but must be monitored
and validated prior to placement. When a concrete truck arrives at the onsite it stops at two mixing stations; one adds super plasticizer and shrinkage admixtures and the other blows in steel fibers. The final placing slump is approximately 6-inches. Steve Lewis of Lewis Construction, Schofield, Wis., a PrimX licensee, says his company locates construction joints in a floor so that they won’t occur in traffic areas. Per the PrimXComposite process, they also wrap columns with felt and plastic film and place three pieces of rebar around both columns and re-entrant corners for additional crack control. Concrete is placed and finished conventionally in a single lift. Following placement, workers place wet curing blankets and keep the concrete wet for 14 days. The slab can typically be loaded with lifts and equipment in 72 hours. Wet curing is critical to the zero-shrink process as the PrimXDC demands water to produce the zeroshrink reaction. After wet curing is complete, the floor slab is cleaned and a densifier is applied to complete the work.
BEING COMPETITIVE According to Gresser, the cost of materials for PrimX adds 65-80% to the cost of concrete versus conventional ready mix. In spite of these costs, PrimXComposite slabs can be cost competitive with traditional floors because PrimX engineered floors are thinner than standard floors for the same load ratings. Applications with higher load demands are even more
attractive because PrimX’s prices are often lower than conventional slab designs as loads become higher and traditional designs become thicker. For example, a conventional floor specified to be 7 inches thick, even with reinforcement, can usually be engineered to only 4 inches thick using the PrimX system. Malenich said they recently offered an owner an $800,000 credit for using PrimXComposite instead of a conventional floor specified with a double-mat of reinforcing steel. PrimX technology has been available in Europe for over ten years and is now the dominant system in Northern Europe. In the U.S., more than three million square feet has been installed to date and Gresser plans to install as much as 12 million square feet in 2019 in the ten states where they currently have licensees. “Right now we have proposals out for more than 60 projects in the US and Canada” he adds, “with more coming every week.” “We also have owners asking us for proposals in several states where we are still negotiating with potential licensees. This helps us partner with local best-inclass concrete contractors as potential licensee partners allowing them to see the process before committing.”
When the concrete is cast the placing slump is approximately 6-1/2 inches. Laser screeds and workers in the puddle move the fresh concrete around in usual fashion. Photo Credit: Fessler & Bowman Inc
30 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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Booth: 032126
If you’re pour includes extreme slopes for drainage, multiple stickups, or precise FF/FL requirements then you need the #1 selling boom-operated laser guided screeds on the market. Your Ligchine ScreedSaver will help you get the job done faster with the industrie’s first zero turn drive system and the ability to cover 10,000 ft² per hour.*
AFFORDABLE
DURABLE
LABOR-SAVING
Visit us at www.Ligchine.com *numbers based on the ScreedSaver BOSS 240 model
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FLATWORK/SLABS
By Corey LeFebvre
Contractors are placing an elevated deck using lightweight concrete. Photo Credit: Corey LeFebvre
Winter Lightweight
CONCRETE Placing lightweight concrete can be challenging, but if you plan appropriately, it doesn’t have to be.
A
s a concrete slab place and finish contractor, lightweight concrete is one of the most difficult mixes to place. Any project requires a certain amount of planning up front with regards to the mix design being used. The mix must be designed in accordance with project specifications, but project specifics make mix design or schedule
adjustments necessary to project success at times, not just beneficial to aid with placement. Often contractors rely on the concrete company to create a mix for pumping because lightweight mixes must achieve the specified unit weight, and because it is typically specified for elevated decks, the mix typically must travel through a pump and system to its point of placement. For that reason, most lightweight mixes have air content higher than the 3% maximum required by ACI for hard troweled floors. Concrete suppliers have told me air is in the mix to aid with pumping, and the theory is that the air dissipates through pumping to yield an end product with less than 3% to allow a hard-troweled surface. A contractor working a mix with higher than 3% air will not
successfully close the surface during the finishing process for a hard trowel finish, even if all the correct tools and workmanship is in place, which can lead to delamination. Checking air at the point of placement is therefore preferred, and checking at least the first three trucks to establish consistent air content is a good practice, even if the specifications require less frequent air testing. Lightweight mixes also typically contain a certain amount of water reducing admixture. Any mix, lightweight or normal weight, will lose slump as it runs through a pump and system. The more system, the more slump loss. The more twists, turns, elbows (especially 90 degrees), the greater the chances are that the contractor will have problems with the mix, the pump, or possibly both. These are sometimes problems a contractor can overcome during a pour, but occasionally they lead to long term problems with the end product, which is why it is important that the access for the pump on a lightweight pour is an uninhibited as possible. My preference with any mix is to limit admixture usage. Even though higher slumps can be achieved with admixtures, the mixes are sticky and set time is affected in ways that may be unanticipated, particularly in periods of extreme weather. In addition, some admixtures can potentially have adverse effects on follow on work to the slab if a decorative finish is specified. The defining characteristic above these concerns for lightweight is the aggregate, which is a very porous stone, such as vermiculite, perlite, or pumice. The porosity of the stone makes it capable of absorbing water like a sponge, and if the aggregate is not completely saturated with water prior to entering the pump and system, the aggregate will soak up any water in the mix, which will cause problems with workability once the mix is at the point of placement, if it even reaches that point; a dry, lightweight aggregate absorbing water in the mix within the line of a pump can and will cause a pump failure, which is very difficult for a contractor to overcome
32 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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FLATWORK/SLABS
Pictured here are contractors removing a lightweight slab due to issues with the slab. Photo Credit: Corey LeFebvre
during a pour. The contractor’s due diligence is to make sure the concrete supplier is soaking the aggregate prior to the pour. In winter when temperatures outside are below freezing, aggregate soaking becomes a challenge for the concrete supplier. As a project manager, I would visit concrete plants to see for myself what the aggregate soaking process entailed at least once; more than once if my crew was having consistent problems with a mix. What I found is that the typical aggregate soaking process involves a pile of stone located outdoors with sprinklers and soaker hoses doing
to visit the concrete plant and discuss with the quality control manager the method for soaking. Is the aggregate soaked indoors or outdoors? If the weather leading up to the pour is above freezing more than half a 24-hour time period for several days, perhaps outdoor soaking is acceptable. This method is preferred for larger pours simply because the space is not as limited. Making sure someone in the yard is regularly moving the aggregate so that the entire pile of stone, as opposed to just the top or bottom of the pile, is getting saturated is a necessary check. If the pour is occurring during a period of time with consistent
the work of saturating the aggregate. In winter with below freezing temperatures, this does not work. Even if water is left running overnight, frozen stone is not a good plan for a workable mix. A lot of bigger concrete companies do, however, have indoor, heated spaces where they can park mixing trucks overnight. I would ask them to store the aggregate within the drum of the mixer with water overnight before a big pour, which they would gladly agree to doing. I have found from experience that winter lightweight concreting in particular takes special consideration. All of the issues discussed above present challenges, but particularly with soaking aggregate in freezing temperatures, it is in the best interest of the contractor
temperatures for three days or more below freezing for more than half that time period, I recommend requesting aggregate soaking take in a climate-controlled facility. As mentioned above, the concrete contractor will usually accomplish this by placing the aggregate in the concrete trucks overnight and submerging it in water, storing the trucks in a warehouse that is heated. I like this method because submerging the porous aggregate in water should saturate it more efficiently than using sprinklers or soaker hoses on a large aggregate pile outdoors. However, the issue becomes the time period the concrete company is able to do this. Most companies are running other pours with their trucks the day prior, and so the aggregate soaking
does not commence until all the pours from the previous day are finished. This is an important consideration when it comes to the timing of the lightweight pour as the contractor wants the aggregate soaked as long as possible. The other potential issue with regard to soaking aggregate indoors in concrete mixers is the size of the pour vs. how many trucks will fit in the indoor space. This is another area where the contractor must discuss with the concrete company how much aggregate and water can be stored in each truck and how many trucks will fit in the indoor space. At this point, the contractor should run a calculation on the size of the pour and compare that to the amount of aggregate that will be soaked. Usually the pour schedule and sequence have been discussed and set for weeks if not months ahead of the pour date, however, an adjustment to the pour size may be necessary if there is not enough saturated aggregate available for that pour. If the pour size is 200 cubic yards, but there is only enough space available to soak aggregate for 100 cubic yards, the contractor should adjust the pour size accordingly to avoid issues with placing and finishing as well as handing over a consistent, quality product. As a contractor, I experienced challenges placing lightweight concrete from time to time in both summer and winter, but I found the winter months to require additional planning. Checking the temperatures several days prior to the pour is critical for winter concreting, and during that process, the contractor should be questioning how lightweight aggregate in particular is being soaked at the plant. Factors to consider include indoor vs. outdoor, the timing of the pour, and the size of the pour as a result of how the supplier is proposing to soak the aggregate. Asking these questions and taking a look for yourself are good practices. As contractors we are schedule-driven, and so adjusting times and pour sizes should be avoided if possible, but if they are necessary in order to deliver a consistent, quality finished product, it is in the best interest of all parties involved to do so.
34 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ FOUNDATIONS/WALLS
By James R. Baty II
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
The Veteran’s Memorial of Mount Vernon, Iowa An ode to the future, a gift for the past.
T
he selfless act of service and sacrifice is one of the most important elements of our country’s heritage that must be preserved.
In so doing, the act of honoring should bring together the past, present and future in order to foster a legacy of preservation. It is with this spirit that a memorial to veterans has been added to this landscape along The Lincoln Highway as it makes its way across Eastern Iowa in the town of Mount Vernon, Iowa. In 2014, the Women’s Auxiliary chapter from the small town of Mount
Vernon, Iowa, which is located just east of Cedar Rapids on Highway 30, met with Hahn Howard Post 480 of the American Legion to discuss the aging display and recognition of community veterans. Located in the town’s cemetery, the “monument” was limited to a plaque anchored to a concrete pylon; a weather-proof display case where names were periodically updated; and the proud symbol of America found in the U.S. flag.
38 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ Far right: One end of the mockup pour was detailed with column and wall segments cast monolithically and an interrupted form liner. Photo Credit: Concrete Foundations Association
Their interest was to generate energy and eventually contributions to establish a more recognizable and honorable tribute to service. Together, these two organizations turned to a local architect, James Baty of Sauter, Baty & Bloomquist, Inc. for ideas of how they could turn a few sketches into a vision and subsequent reality. After meeting with the leadership for both the Post and the Auxiliary, Baty took the concept of an eagle perched on a stone in a different direction, intent on using the creative flexibility of concrete to achieve a more permanent, memorialization that would significantly change the future of the community’s framework. Today, the memorial sits in a prominent location near the entrance to the Mount Vernon Memorial Cemetery, as the drive begins to climb the first hill. The memorial stands as a stark reminder of the permanence of sacrifice, loss, honor and service to embody both community and national pride. “The memorial is a contrast of a stark, pigmented concrete with the warmth of landscape and vegetation surrounded by generations of saints,” states Baty. “The modernism of the two concrete walls depict two hands that reach out; one a hand of veteran service displayed in the wall of honor; and another the hand of present, experienced by those sitting along the wall of contemplation. Both approach each other for an eternal handshake around the flag of freedom that was won and continues to The completed Veteran’s Memorial contrasts the starkness of concrete and polished granite with the vitality of landscape in a solemn, reflective setting. Photo Credit: Rubicon Photography, Inc., Mount Vernon, IA
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www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor 39
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★★ FOUNDATIONS/WALLS
The Veteran’s Memorial in Mount Vernon sits in the corner of a a full cemetery surrounded by plots. This challenged the contractors for site sensitivity and careful placement. Photo Credit: Hahn Howard Post 480 - American Legion
The final concrete placed was the estimated 1,035 square foot plaza deck complete with recessed trough for brick pavers. The plaza has a zero slope entrance and gentle fall directing water off, down the hill or to drains. Shown also is the “living” wall serving as retaining wall for the sloping site. Photo Credit: Concrete Foundations Association, Mount Vernon, IA
be maintained by these selfless acts and preserved in the memories formed.” When concrete was chosen as the medium for the memorial, Baty began to seek a true craftsman in the community with the experience and technology to turn the vision into a reality. Kelly Concrete of Marion, Iowa came to the table. A member of the Concrete Foundations Association (CFA), which Baty serves as Executive Director, made part of this involvement possible. “We live in this community and our kids attend the local school district,” states Chad Kelly, president of Kelly Concrete. “We do a lot of work around here and when Jim contacted me, my passion for this community and thankfulness for all our veterans made this a project we had to deliver.” Vision and reality are not always the best partners. The visitor to this memorial is met by a stark, worn figure
of a hand. Around the outside of this hand are the facts and depictions of what service means, where is it found and how has it shaped freedom. Along the inside of this hand are plaques that dedicate the countless names that traverse the years, held firmly in its grasp.
Entering the memorial site, the visitor is protected from the sounds of today and held in a place of tranquility by the wall that stands the test of time. On the opposite side, a shorter wall is topped by a concrete seat for visitors to sit and contemplate, providing the evidence of both present and future protected by the service of many. Here concrete planters promote life to grow amidst the digits of the living hand and bring together color and texture that draws the soul to tranquility and respect as the eye embraces the magnitude of the concrete structure inset with polished black granite panels. Between these two walls, a walk of remembrance, honor and personal commitment is found formed into the concrete plaza as visitors enter the plaza and walk along a memorial brick path. Formed of cast-in-place concrete, this wall needs no bracing, no supporting structure as it holds its own against the elements as the arcing, monolithic digits hold their own. Textured columns transition from digit (panel) to panel as an aged knuckle holds together the fingers of the hand that fought for so much. The texture for the columns was the first challenge and Baty turned to another CFA member, Scott Systems, Inc. out of Denver, Colo. A specialist in decorative concrete for transportation walls and bridges, Buck Scott, the
40 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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★★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ company’s founder, knew precisely what would be needed. They would donate a series of liners cut to size with a cotton wood bark pattern that would generate the wrinkles of the knuckles. Baty next presented Kelly this final design and they began discussing ways of making it possible. They settled on a construction layout, adjusting the sizes of the straight wall sections so that forming modules of their Contech removable forms could be used. This was important to give the wall sections a sharp contrast to the variegation of the knuckles, which would be cast from Sonotubes with the liners set inside them. The largest question was whether it could all be cast monolithic or if the columns needed to be produced first and then connected by the wall segments. Kelly decided the only way to approach it was to mock up the wall segments in their shop. Plastic film was put down on their shop floor. Next, three different approaches were taken to the column/wall cast to see which
Pictured inside the formed memorial wall, form ties are sleeved for complete removal and two-staged blackouts for the cavities to accept granite plaques are in place and verified before placement. Photo Credit: Hahn Howard Post 480 American Legion
would result in the best containment and quality, particularly along the joint of the removable panels to the Sonotubes. In the end, it was confirmed that the columns would all be cast and tubes with liners removed. The panels would then be fit along the wall lines and at the points where the panels met the columns, notches would be left out in the liners to help control bleed. Below and at right, prepared for concrete placement, the memorial wall segments are formed into the finished columns like the mock-up. Photo Credit: Hahn Howard Post 480 - American Legion
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★★ ★★ ★★ ★★ ★★ ★★ ★★★★★ ★★ ★★ ★★ ★★ ★★ ★★ ★ FOUNDATIONS/WALLS
On site, the six-foot tall columns were cast with Sonotubes holding elastomeric liners by www. scottsystem.com to set the accurate layout for the wall segments as detailed by the mock-up. Photo Credit: Concrete Foundations Association
The next challenge was of course the layout on the jobsite. With no rectilinear relationships or dimensions, Baty produced a layout using four datum lines, the first a north-south orientation line defined at the jobsite and the other three tangent lines stemming from the three corners of a triangular median adjacent to the site where the memorial would sit. These identified the locus or home point for the main wall, which then could be used to locate the remaining control points for the two, four-segment walls set apart by more than 15 feet at the opening and 25 feet across the center. Kelly Concrete put their best layout foreman on the project and the entire plaza was loaded into their total station. As detailed as any house foundation, pins were placed for inspection of the two walls and the perimeter of the plaza deck. This gave the City of Mount Vernon a chance to also review the clearance to all surrounding cemetery plots. Once the pins were approved and the walls completely located, the team at Kelly Concrete took over the project fully. A massive foundation was installed 48 inches deep and 18 inches thick along the two scribed wall lines with vertical rebar at 12 inches on center extending for connection to the features to be formed above them. Next, in a replicated order to the successful test pour, columns with the elastomeric liner were set and concrete placed. This was followed by the forming for the 6 foot tall memorial wall segments as well as the 24 inch tall sitting wall segments.
On the interior of the memorial wall, twelve block-outs were attached to the panels. Each was made by a millwork specialist 4 feet tall and 17.5 inches wide with a two-step draft angle and a total of 2 ¼ inches deep. These would later receive the 16 inch x 46 ½ inch polished granite panels where the names of service men and women would forever be registered. Concrete for the memorial was contracted with Kings Materials from Cedar Rapids. The mix design was a 6,000 psi XCC mix typically used in the pre-cast industry. It was selected to bring high strength along with a smooth finish and accent the textures selected. Additionally, a pigment from Solomon Colors (#920 Charcoal) was added to decrease the starkness of the concrete. Later, pre-cast planters from Peterson Manufacturing were ordered for the sitting wall using this same pigment. All form ties were sleeved for removal so that no steel would remain to stain the concrete. As the panels were stripped, the natural textures of a cast-in-place concrete wall began to evidence the concept visioned for the project of an aged and worn hand of service. No finishing other than a matched color patch for the form tie holes was planned for the wall.
The plaza design was to deliver an on-grade entrance at a single drop-off location for accessibility. This challenge on a dramatically sloped site was met by using the sitting wall to act as a retaining wall. Once the walls were formed, a three inch thick concrete seat was formed over the lower wall. Kelly Concrete added a finishing touch to this seat by attacking it before it reached full strength and raveling the edges to give it a more natural or living feel. This further gave contrast to the starkness of the memorial wall. A drain was installed in the middle of the plaza and all deck concrete sloped ¼:12 to move water toward the drain, set to daylight further down the slope. Granite panels were later fabricated by Elite Stone of Lisbon, Iowa and donated to the memorial, fitting perfectly in the recesses and cemented into place. These panels were then caulked with a black caulking at their perimeter the depth of the first stage of the draft recess, leaving a wider gap to separate the concrete from the granite for framing. The “living” wall complete with a three-inch concrete bench was treated with hammer claw at an early edge to expose the edges in a cleaved, organic pattern by Kelly Concrete. Photo Credit: Concrete Foundations Association
The Mount Vernon Veteran’s Memorial was set in motion by Hahn Howard Post #480. Designed by James Baty, FACI, a local designer to Mount Vernon and constructed by the professional concrete contractor, Kelly Concrete of Marion, Iowa along with the participation of King’s Materials, Elite Stone and Scott System, Inc. The memorial was given to the community to honor, educate and celebrate this legacy through funding and passionate leadership by Post #480 and the Women’s Auxiliary of Mount Vernon.
42 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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DECORATIVE CONCRETE
By Chris Becker
STAINING CONCRETE Products, applications and delivering a successful project.
I
f you haven’t noticed, concrete has become more fashionable in mainstream design. Although the use of colored concrete isn’t anything new or groundbreaking, the interest in concrete as a finished, functional surface has found its way into everything from modern furniture to commercial floors. The boundaries of texture, form and color
continue to push the material into new applications. When it comes to staining concrete, its vital to take a step back and ask yourself what both you and your client expects from the coloring process you plan to use. It’s important to underscore that in general, stains and dyes are not going to provide an opaque, solid color, but rather a variegated representation of color that shows off the character of the concrete surface it is being applied to. Generally, there are three different types of concrete stains: • Reactive stains • Water based stains • Penetrating Dyes
REACTIVE STAINS I’ve often referred to acid stains as the Ferrari of concrete finishes…beautiful, dynamic and important to maintain! This material changes the color of the concrete surface through a chemical reaction between the calcium hydroxide in the concrete and metallic salts in the stain, which are typically carried in a hydrochloric acid. This reaction creates a beautiful patina, with highs and lows of color that reflect the variations of the concrete surface. The range of colors is limited to earth tones and can be used on a variety of concrete surfaces. Important considerations for a successful finished product include:
46 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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The range of colors with reactive stains is limited to earth tones and can be used on a variety of concrete surfaces. Photo Credit: Solomon Colors
• The concrete is fully cured • The surface is clean, and does not have any undesired variations from the curing process • The stain is applied in a way that does not leave application marks… spraying acid stain is preferred over rolling or applying with a brush. • Residue is completely removed after the stain has reacted and dried, and the surface is neutralized prior to sealing What you see is not what you get… the reaction process of this material will not reveal the actual color of the final product until the stain has completely reacted, and the surface is cleaned and sealed. The best type of sealer is applied. For interior floors, multi component epoxies and urethanes are preferred, while outdoor applications are best sealed with solvent based acrylic
sealers. Making sure that the sealer applied is properly maintained will ensure that the installation provides years of service.
WATER BASED STAINS For a slightly less challenging installation process with a wider range of
color choices, water- based stains are a great choice. This material combines pigments carried in a suspension of water and polymers to drive color into the surface of the concrete. This material is translucent, however will become more- opaque with multiple coats…a balancing act between achieving the
For a slightly less challenging installation process with a wider range of color choices, water- based stains are a great choice. This material is translucent, and will become more- opaque with multiple coats. Photo Credit: Solomon Colors
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www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor 47
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DECORATIVE CONCRETE Left: Test on site with mock ups to understand how the products will look and react. Below: Pictured here is the actual floor after presenting the mock up. This is not only great expectation management for your client but will also provide a clear road map for your crew to execute the install as expected. Photo Credit: Solomon Colors
intensity of desired color while maintaining an unpainted look. As with reactive stains, surface prep and site conditions of the concrete are important as well as the following: This stain can be diluted and also combined with other colors to create a wide spectrum of colors and intensities of color. • Application method is more forgiving…you will see the color in real time unlike the reactive stains. • No clean up or surface neutralizing is required after applying the waterbased stain. • Layering of colors and creating more unique effects become a function of the application method, not the material. • Over-applying water- based stains can cause a build up of solids on the surface of the concrete, which will be unstable and prone to wearing. Just like reactive stains, apply the best sealer system for the application to keep the surface of the concrete from wearing.
PENETRATING DYES Typically used for interior floors, these dyes create intense, bright colors and are either carried in an Acetone or water solution. Traditionally used as a part of polished concrete floor, these colors are typically not UV stable and are used for indoor applications. Specific benefits of this method of coloring: • Intense, bright and translucent colors • Rapid surface penetration and drying make them ideal for stenciling and detailed artwork in slabs. • Much like water based stains, these colors can be diluted and combined to create multiple shades and tones beyond the standard color offerings. • Generally, concrete dyes are used in-line as a part of a floor polishing
48 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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system, where the color is introduced in-between steps in the grinding/polishing process. • For non-polished applications, the material is locked in with an epoxy/ urethane system.
DIFFERENT SUBSTRATES, DIFFERENT EFFECTS. Its important to remember that each of these topical stains will look and behave differently on each substrate you consider applying them to. When you consider the following surfaces, keep in mind these products will have a unique personality on each: • Micro toppings • Stamped/Textured Concrete • Burnished interior floors • Pre-cast elements • Ground and Polished Concrete • Sand Finishes Remember these materials are only a part of what goes into a successful project. Consider each installation as its own
unique situation, and do your homework before starting a project: • Evaluate the surface you are staining • Test on site with mock ups to understand how the products will look and react. This is not only great expectation management for your client but will also provide a clear road map for your crew to execute the install as expected. • When using multi component epoxies and urethane, make sure the moisture content of the slab conforms with the products you are using. • Confirm that your client understands that variations are inherent and expected with these kinds of products. • Establish the proper protocol with your client for how the installation will be cared for and maintained up front. Ed. Note: Chris Becker is the Director of Technical Services at Solomon Colors. He can be reached at cbecker@solomoncolors.com.
Generally, concrete dyes are used in-line as a part of a floor polishing system, where the color is introduced in-between steps in the grinding/polishing process. Photo Credit: Solomon Colors
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50 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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DECORATIVE CONCRETE
By Darcy Boyle
The church decided on a Tree of Life design for the entryway, a nod to the Bible’s parable of the mustard seed and birds resting in tree branches. Prosoco
A Floor of
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Ennis Art uses a special blend of art and science to produce fine art installations on finished concrete floors.
om Schulz and Daniel De Wit aren’t your ordinary concrete contractors. They’re not really your ordinary anything. The two members of Ennis Art (Tom is the CEO and Daniel is the design associate) provide such a unique combination of skills and experience that it defies simple categorization, and their
prowess is one that’s a rare find across the nation. The uncle-and-nephew team uses a special blend of art and science to produce fine art installations on finished concrete floors, particularly designs of the labyrinth variety. That’s what led the two to Lawrence, Kan., in the summer of 2018. Their services were hired by the leadership of the
52 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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DECORATIVE CONCRETE Walking the labyrinth is an ancient spiritual practice, one that goes beyond Christian traditions but has been prominent in Christian practices since Medieval times. Photo Credit: Prosoco
community’s Peace Mennonite Church, which had recently undergone an addition and renovation.
DEFINING THE SCOPE Before construction began in April 2018 to double the building’s square footage, the church’s building committee discussed what it wanted out of the floors. “Concrete floors were something that we were interested in for environmental reasons,” says Joanna Harader, pastor of the Peace Mennonite Church in Lawrence. “Concrete is just a lot more environmentally friendly in a lot of ways, but we were also really concerned about the aesthetics. We wanted it to still look nice.” A member of the building committee found a video of stained concrete, which led to the realization that their floors could be much more interesting than just polished concrete. “I asked if we could do a labyrinth, and that’s how we got connected with Ennis Art, because Tom Schulz is one of the very few people in the country who does labyrinth installations in concrete,” Harader says.
Walking the labyrinth is an ancient spiritual practice, one that goes beyond Christian traditions but has been prominent in Christian practices since Medieval times, she said. “No indoor labyrinths exist in the area, so this is something we thought we could do to share with the larger community too and invite people in.” The church also decided on a Tree of Life design for the entryway, a nod to the Bible’s parable of the mustard seed and birds resting in tree branches. “We asked Tom to make sure the birds are there in the trees,” Harader says.
Both designs were To achieve the desired look, the selected due to their team used four special connection to different shades of ColorHard, the congregation and mixed with general appeal to the LS densifier/ hardener, at public at large. varying dilutions. “Like the labyrinth, Photo Credit: the Tree of Life is a Prosoco spiritual image but it’s not an exclusive image,” Harader says. “If we have people use the building who aren’t Christian, it’s not an image that’s exclusionary or off-putting to other groups.” As the church’s leadership entered
54 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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DECORATIVE CONCRETE
discussions with Ennis Art about creating and executing these designs, the scope of work quickly grew to include finishing and coloring the building’s entire concrete floor. That involved a challenge of one uniform aesthetic on essentially four different types of pours. “The original concrete floor, which was covered with VCT. There were some patches, there was a new pour, and kind of the merging in between those,” De Wit says. Finding a solution for the varying pours and conditions took some experimentation, but that was nothing new to the team. They had previously worked with PROSOCO’s Consolideck products for an intricate watershed design on the Hitchcock Center for the Environment, a Living Building Challenge project.
DOING THEIR HOMEWORK Prior to arriving on any jobsite, the Ennis Art duo spends hours in their
Asheville shop to determine precise formulas according to what the owners want out of their floors. “We’re always experimenting and making samples,” De Wit says. “We do a lot of our investigations in our workshop on cast pieces that we make specifically for test purposes. So developing the different samples informed us on how we can approach new installations, but we’re always having to change things slightly with this floor in particular. Certain parts were much darker than others. Certain parts were more open or closed depending on what existed in the concrete before we got here. Sometimes we have to make artistic decisions that are variations on the formula so that the final product looks closer to the actual sample.” In this case, the church wanted an organic, green, mottled effect throughout the entire building. Schulz and De Wit would need a system of products to produce a uniform appearance and
sheen on a variety of floor conditions. “We thought that the PROSOCO products would be great because they have an opaqueness that would allow us to equalize out some of those discrepancies from the different old and new pours, and then also where different material had been glued down or applied to the floor back in the day,” De Wit says.
TIME FOR MORE TESTING Still more trial-and-error awaited Schulz and De Wit once they arrived on site in Lawrence. Neither one really knew exactly what combination of products and processes would work until they saw the floor in person. They arrived on site to discover their first challenge – a significant amount of adhesive left on the concrete after the VCT was removed. Here’s the sequence that followed: • To allow a stripping agent to reach the adhesive, they cleaned the
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Tom Schulz is an artist and former contractor who by hand, designed the Tree of Life feature on the floor. Photo Credit: Prosoco
whole floor with 2010 All Surface Cleaner. • Once the floors were cleaned and wet-vacuumed, they tried Wax & Cure Remover, which De Wit says worked but not quite well enough. “There was a lot of intense glue and mastic that was left over from the tile,” De Wit says. “It was really cooked in and penetrated deeply into the surface.” • They then tried Cure & Seal Remover, which did the trick. “We used that throughout all of the historic parts of the building where the tile was applied.” • After the floor was stripped, De Wit and Schulz used a combination of hand-scrapers and abrasive buffing pads, and wet-vacuumed up the residual sludge using water and 2010. • SafEtch was then used to open up the concrete’s pores. • And finally, 2010 was applied again
at a very mild dilution to remove the residue and leave the floor in its most clean and open state.“From there, it was ready to apply the ColorHard,” De Wit notes. • To achieve the desired look, the team used four different shades of ColorHard, mixed with LS densifier/hardener, at varying dilutions. • Copper Patina: This color is similar to the Statue of Liberty, De Wit says. Used at 30:1 dilution. • White: To give the color some nice highlights at a 40:1 dilution. • Emerald: Diluted at 60:1, or exactly half-strength. • Serpentine: Used last to “settle everything in and mute it down.” Used at regular strength, 30:1 dilution. “All four of these layers were applied with a one-gallon tank sprayer,” De Wit says. “Sometimes we used a textured roller to make a more uniform mottled effect.”
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www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor 57
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DECORATIVE CONCRETE
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That produced a controlled but still ancient, mottled and organic appearance. “…and then we finally applied two coats of PolishGuard which was then burnished to bring up the total shine and to give it a cohesive final coated layer.” All the trial-and-error “is very sitespecific, in-the-moment, conscious artistic decisions to get a final, consistent result,” De Wit says.
ART DOWN TO A SCIENCE The work that Schulz and De Wit do is no doubt art. But it isn’t as simple as oil paints on a canvas. Their work is often not even as simple as applying a stain to a concrete floor. Because every concrete floor is different, with varying factors – conditions, blemishes, previous treatments, desired performance and aesthetic -- that affect their artistic efforts. They mix, they measure, they test meticulously, they document, they experiment, they frequently start over again, and they execute. As purveyors of artistic designs on a chemically reactive surface like concrete, Schulz and De Wit have long understood the intricate balance between their
creative endeavors and the chemistry of their substrates and products. “Tom’s a fine artist and painter as well as having a background as a contractor,” says De Wit of his uncle. “That informs how we approach our installations. He has developed a way of using watercolors to reflect the colors available in the ColorHard pigment charts, and now he’s able to make a representation of the PROSOCO products with the watercolors, which is how he develops the designs.” Those designs are in high demand as more people are turning on to the aesthetic effect of concrete artwork. Ennis Art has been hired to do vertical surfaces, horizontal surfaces, art installations, cast pieces, labyrinths and more. The pair recently completed a labyrinth in an oncology center at a hospital in Greenville, N.C. “As people are becoming more aware of the benefits of a meditative walking path and meditation in general, we’re getting more work that is related to that kind of interactive healing,” De Wit says. In Lawrence, the Peace Mennonite Church plans to make the labyrinth available for use by the public on the first
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Tom Schulz and Daniel De Wit are two members of Ennis Art and provide such a unique combination of skills and experience that it defies simple categorization. Photo Credit: Prosoco
Friday of each month. “It’s a flexible space and a worship space,” Harader says. “On Sunday mornings, it’s not set up in a way that people can walk it, but a lot of times that space will be open and people can use it for the meditative walking.” At the renovated church’s open house in mid-August, more than 100 people came through to see the new building and floors. Church members invited their friends and family, and people even came in from out of town for the event. On the first Sunday that the church was open for worship, members were asked to walk through the building and put up sticky notes with comments on details they especially liked. Harader noticed many of the notes on the floor’s two pieces of artwork. One note just said, “Wow.” “I’ve heard a lot of positive comments from people who like the designs, but especially when you walk right in and that Tree of Life is right there, that’s something that people really notice,” she says.
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CONCRETE PAVING
By Tom Kuennen
At dawn, Larry Young Paving places entranceway to Southern Pointe Community. Photo Credit: Wirtgen America Inc.
A Texas concrete slipform paving contractor is taking advantage of the cool and uncongested early morning hours before sunup to start the day’s work, and end it before noontime.
T
hat's the game plan for constructing miles of concrete pavement for a massive residential project now underway on the site of the former Texas World Speedway just south of College Station, and it's one to which the company adheres for most of its concrete paving projects. There, Larry Young Paving Inc., Bryan, Tex., began paving at 2:30 a.m.
and knocked off about 11 a.m. Starting early resolves issues of faulty curing due to the excessive heat of the day, and eliminates hold-ups of mixer trucks in crushing urban traffic. The development, Southern Pointe Community, ultimately will house some 2,000 residences, businesses and parks. About 100,000 cubic yards of pavements will be constructed there in coming years. "We're taking the old Texas World Speedway, demolishing it, and putting in
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CONCRETE PAVING
SP 62i from Wirtgen has unique spreader/placer (right) mounted to front of paver. Photo Credit: Wirtgen America Inc.
Larry Young Paving places 2,200 ft.-long pavement 19 ft. in width. Photo Credit; Wirtgen America Inc.
a residential development," says Wallace Phillips, developer of the Southern Pointe project. "We're looking at a 12-year development plan within 654 acres, and we're in Phase 1 right now." Larry Young Paving was founded in August 2005, but Young already had extensive experience in Texas concrete paving. "I've been in the business all my life," says Larry Young, president. "We do public infrastructure concrete paving, like municipal construction, but we also do commercial jobs like shopping malls." "We self-perform dirt or site work, utility work, asphalt and concrete slipform paving," says Mark Schinzler, operations manager, Larry Young Paving. "On any day we have at least 300 people working for us. We're licensed in Louisiana, Texas, South Carolina and Mississippi." Initially the firm started as an asphalt paving contractor. "We decided to diversify to chase larger projects, so we added curb-and-gutter concrete to our portfolio, then stepped up to concrete slipform paving, as that's where the market was heading," Schinzler says.
ENTRANCE TO DEVELOPMENT Texas loves its concrete. "The governments are looking for longevity and
Razor-sharp edge holds shape with stiff mix. Photo Credit: Wirtgen America Inc.
durability," Schinzler says. "For example, the city of College Station now is specifying that all new residential streets be of portland cement concrete, with most of them slipformed." This gives Larry Young Paving a big advantage, as it's the only contractor in town with a slipform paver, a two-track SP 62i from Wirtgen Group. In October 2018, this paver was put to work in the pre-dawn hours at the Southern Pointe residential development, placing a 2,200 ft.-long pavement 19 ft. in width, some 1,100 cubic yards of concrete. This pavement will serve as a southern grand entrance to the entire development. "We're placing half the 38-ft.-wide roadway, with a longitudinal joint in the middle using tie-bars," Schinzler says. "As soon as we finish we'll get off of that, and three days later get back on it and place the other side." Slump of the concrete is 2 to 3 in., Schinzler says. "We need a low slump so it will stand up on the sides and curb," he says. "Consistency of the concrete is very important for the pour, obviously. It's a city mix with crushed river gravel which will reach 3,500 psi in 28 days, but historically it will be close to that in seven days."
Hydraulic vibrators are set at 16 in. spacing and the frequency is 125 vibrations per second. Crown is 3 percent from centerline and is controlled off two stringlines. The SP 62i can run slope control up to 16 ft. (4.5m) if contractors want to run without a string on one side. Texas DOT slipform paving typically is on a cement- or lime-stabilized base, with an asphalt pavement bond-breaker, topped with fresh concrete, he says, adding cities are doing lime stabilization, then concrete, with no asphalt seam. "This pavement is a jointed concrete pavement, not continuously reinforced, placed on a 6-in. lime-stabilized subgrade, Schinzler says. "We've done both continuous and hand-jointed work with the paver, from 7 in. to 11 in. in depth." While the work itself is not within the actual city limits of College Station, it lies in an ETJ, an extraterritorial jurisdiction, which under Texas law permits municipalities to control and harmonize development in areas which will be annexed in the future. In addition to the SP 62i the firm has a WR 2000 XL recycler/reclaimer and a W 150i cold mill from Wirtgen; Vision 5203-2i, Super 1703-3i and Super 13002i asphalt pavers from Vรถgele; and four Hamm tandem rollers, an HD+ 110i VV, HD+ 70i VV, HD 120i VV and HD 14 VV CompactLine roller. The firm also has a Hamm H 10i P single-drum soil compactor. "We believe in Wirtgen Group equipment," Schinzler says. "We've had
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CONCRETE PAVING
huge success with most everything we've bought from them. Their technical and application support is phenomenal, always there to answer questions regarding operations and mechanical from us." The SP 62i places concrete slabs from 6 ft., 6 in. to 24 ft, wide, and up to 18 in. deep, but also places curb with the right mold. "We're getting new curb molds developed that will let us place a 'lay down' curb, as opposed to a 'stand-up' curb," Schinzler says. "We'll do it with the 62i, pouring monolithically with the pavement. At the track we are doing it all with the curb profile that the city requires." College Station permits concrete placement at 35 deg F and rising, but that's not been an issue as the ambient working temperatures have been 60 to 80 deg F in October. Temperature of the concrete must be below 95 deg F or the load is rejected. Concrete was supplied by Knife River Corporation.
Operator platform is isolated from vibration and enhances visibility of job. Photo Credit: Wirtgen America Inc.
"That's part of the reason we pour early in the morning," Schinzler says. "That, and traffic concerns, as it's much easier to get the material there that early. In Houston, most of the contractors place their pavements at night and structures during the day. But we do night and day."
EXPANDING PAVER FLEET Larry Young Paving took possession of its SP 62i immediately after World of Concrete 2018, where this particular machine was the centerpiece of the Wirtgen Group stand. "We actually bought the machine before it went to Las Vegas, where they used the machine in the exhibit," Young says. "We then transported it back to Houston where it was prepped for us." "We were chomping at the bit for it to get here," Schinzler says. "Within a week we were paving with it. We had some existing older slipform machines, but once we achieved a certain volume
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of work, we decided we'd look at newer product, that we could gain training on -- eliminating a steep learning curve -- and not have as many issues during a pour as with the older equipment. Now the crews are all experienced with this machine, and are comfortable with paving and getting a good finish." "One of the incentives to getting this paver was that the manufacturer provided the training at no additional cost," Young says. "If we had bought a used machine we would not have had the benefit. Before we bought the machine we went to Wirtgen's Center for Training & Technology in Nashville and saw the 62i and 92i machines. "We discussed items we'd like to add, such as the placement conveyor mounted to the front of the machine," Young says. "It's not a standard item and may be the only one like it in the world. Essentially a dedicated placer is mounted to the machine, which we
use for narrow widths like 12 ft. where there can be accessibility issues. At the 19 ft. paving width at Southern Pointe it becomes harder to reach, so we have a separate placer for wider widths, which we are using at Southern Pointe. And if the separate placer goes down, we have the paver-mounted placer as a backup." "A paver-mounted conveyor could detract from smoothness, but Larry
Young Paving has proven that a single unit can both place and pave with excellent results," says Tim Nash, Wirtgen director, concrete products. "From a contractor's point of view, this can mean elimination of an entire separate placer unit which essentially doubles the equipment and operating costs, not to mention mobilization costs. In a state like Texas, where there is continuously reinforced
Curb integrated into paver mold gets hand finishing. Photo Credit: Wirtgen America Inc.
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CONCRETE PAVING
Paving continues through 11 a.m. at Southern Pointe Community project. Photo Credit: Wirtgen America Inc.
concrete pavement (CRCP) everywhere, this could be a really big deal."
TWO TRACKS The SP 60i platform of pavers is available in two tracks (SP 62i) and four tracks (SP 64i). "We chose the two-track because we feel it gives the pavement a smoother ride," Schinzler says. "It's also more compact and easier to move. There is a little
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more to deal with when you have four tracks. There are a few added capabilities that the four-track machine has, but for our purposes, two tracks are quite sufficient. It also has a smaller footprint while paving. And since we do a lot of municipal work, and wanted to have the small placer attached to the front, you could not do that with a four-track model as two of the tracks are placed too far forward."
Quiet operation was another aspect Larry Young Paving looked for in a paver. "If there's one thing that's pretty miraculous, it's how quiet it is when it's running," Schinzler says. "Even as it's running, it's hard to believe that it's even on. When vibration is on, you can feel it, but it's nowhere near our older equipment, which were so loud and the vibration would rattle your teeth. It's a vast improvement, while putting out a phenomenal concrete mat." The paver is provided with a "Super Smoother" that serves as a robotic float. "It's really handy because you don't ever have to remove it from the machine. Instead of having to remove it before travel, you just fold it up and travel," Schinzler says. "It does a really good job of cutting 'bumps' and finishing the concrete after it comes out of the paver. The paver also is equipped with the WITOS telematics diagnostic system. "WITOS has helped the maker diagnose
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equipment codes for us," Schinzler says. "I can't say enough about the support that we've got from the Wirtgen people, either on or off the clock." That's important, he notes, because the machine is technologically advanced with many multiple options. "There is a lot of technology in this machine that will really, really help you produce a product out the back that other people can't even touch. You're talking about IRI values in the 30s, even pushing into the 20s. You're talking about a smooth, smooth mat." At day's end, the paver is easy to clean, Young said. "It takes about two to three hours to clean this machine, with its built-in pressure washer," he says. "A lot of people don't take care of their machines the way we do, so ease of cleaning is important to us." "Our relationship with Larry Young Paving is great," developer Phillips describes. "They are an outstanding
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Wallace Phillips, developer, with Larry Young, president, Larry Young Paving. Photo Credit: Wirtgen America Inc.
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THE PRO SERIES WILL WORK ON YOUR CURRENT PULSE-BAC COLLECTION OPTION.
Find Us At the WOC Booth
S12645
www.ForConstructionPros.com/10075388
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PRODUCT FOCUS
Product Focus ››››› A compilation of the latest in concrete saws and blades.
Lackmond STS-6 MultiApplication Diamond Blade
Lackmond Products' newest addition to the STS family is the first true multi-application diamond blade utilizing patterned diamond technology. The third generation patterned diamond technology evenly aligns the diamonds into rows within the blade’s segment. This precise alignment ensures the maximum amount of diamonds contacting the cutting surface at any given moment. The net result is a diamond blade with consistent segment wear rate and approximately 30 percent more footage versus comparable blades. • Specially designed bond/matrix for effective use across multiple applications and varying aggregate hardness • Exceptional performance in softer base materials • Undercut protection segments • .400” usable diamond depth • Slanted core design for maximum cutting speed • Pre- and post-tensioned core to eliminate loss of tension • Available in 14” ForConstructionPros.com/12007792 World of Concrete Booth #C4561/# O31462
PB50 Early Entry Saw from Packer Bros.
The PB50 Early Entry Saw shares features found on other green cut saws, combined with the best innovations and manufacturing quality found in the Packer Brothers existing Extreme line of concrete saws, mini-groovers, and random crack chasers. Built at Packer Brothers’ Minnesota facility for quick factory direct shipping, you’ll appreciate the rugged frame, dust side chute, rubber boots that prevent skid pin sticking, and the universal arbor design that accepts all the popular blade brands. See why professionals that demand quality and value look to Packer Brothers. ForConstructionPros. com/20863152 World of Concrete Booth #O31374
Allen Engineering APS20H Compact Saw
The Allen APS20H is a compact saw with powerful attributes. It features a highhorsepower engine with deep-cutting abilities, and is highly maneuverable. ForConstructionPros.com/12213528 World of Concrete Booth #O31736
Single Row Diamond Cup Wheel
The Gila Tools Single Rowed Diamond Cup Wheels are diamond grinding wheels that are designed for the removal, shaping and smoothing of concrete and masonry surfaces. • Vent holes help dissipate heat for extended wheel life • Use with angle grinders, concrete grinders and grinding machines ForConstructionPros.com/12178228
SKILSAW Walk-behind MEDUSAW
The 7-In. model SPT79A-10 MEDUSAW walk-behind saw incorporates a Dual-Field worm drive motor with added overload protection. • Adjustable arm extends to the user’s height and folds and locks into place for transporting and storage • Large handle with a ambidextrous side assist handle and two-finger trigger provide greater control • Includes an improved pointer for stronger support and a larger wheel for greater visibility • Integrated dust control in both wet and dry operation ForConstructionPros.com/20986024 World of Concrete Booth #O31752
iQ Power PC912 Cutoff Saws
The iQPC912v and iQPC912sk Paver Skate dry-cut power cutters feature integrated dust control that allows capture of up to 90% of the dust at the source. • Quick-Spin filtration system captures and contains up to 5 lbs. of dust • 31- and 34-lb. weights provide an ergonomically balanced design • Come with a retractable blade guard and a 12-in. premium diamond blade • 93cc, gas-powered, 6-hp two-stroke motor • Detachable paver skate accessory kit (iQPC912v) or attached retractable cutting skate (iQPC912sk) ForConstructionPros.com/12296129 World of Concrete Booth #C3027
Diamond Products CC2500 Medium Walkbehind Saw
The CC2500 medium walk-behind saw offers 14- to 26-in. blade capacities with a depth of cut ranging from 4 5/8 to 10 3/8 in. • Rigid high-strength 3/16-in. steel box frame with heavy bar reinforcement • Push- or self-propelled drive • Two-position tilt handle bars • Screw feed raise and lower with optional power raise and lower • Cyclone air filter on gas models • Positive gear drive to rear axle via the Eaton hydrostatic transmission ForConstructionPros.com/21007188 World of Concrete Booth #C4880
70 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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The Leaders in Roller Screed
INNOVATION!
Conical
Residential
Elevated Deck
High FF-FL#
Circular
Tilt-Up
In order to GROW a business, you need to become as versatile as possible, so you can bid on a wide range of projects. This means that when it comes to concrete placement, the screed system you choose, must be able to take on any project imaginable. If your screed can’t take on every pour out there, “you have the wrong screed”. No other screed on the market today offers all the versatility that the Lura screed system can. See for yourself and, “Compromise Somewhere Else”.
Visit us at WOC Booth #O32017
Trolley System
Phone: 701-281-8989 Fax: 701-281-8995 Email: mailto:sales@luraconcretescreed.com
http://www.lurascreed.com www.ForConstructionPros.com/10075533
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PRODUCT FOCUS The Guardian Blade by DITEQ
The Guardian blade by DITEQ features ARIX diamond arrangement technology for faster cutting speed and longer blade life. DITEQ’s super high-quality diamonds provide optimal segment strength in its three segment designs including a wear guard deep segment. The air-cooled structural core prevents overheating. • Designed for use on high speed, masonry and lower horsepower flat saws cutting cured concrete, green concrete, asphalt brick and block along with a wide variety of stone • Guardian blades are available in sizes ranging from 12 to 20 in. diameters ForConstructionPros.com/12029281 World of Concrete Booth #C4657/ #O31864
Cobalt Aero Blade from Detroit Industrial Tool
Perfect for the Professional Contractor looking for supreme high quality, fast cutting diamond products for extra hard material such as hard stone and granite, reinforced concrete, rebar, hard roofing tiles, and more. This powerful blade is laser welded with "Aero” cooling slots/ holes, Jumbo 15mm segments, and fortified with superior quality industrial grade synthetic diamonds. The Cobalt Aero Blade is unmatched in its performance when it comes to tenacious precision cuts. ForConstructionPros.com/12309272
30 INCH REMOTE CONTRoL
CONCRETE GRINDER
Are you ready to Cut, Drill, Grind or Polish? We’re ReDiToo
In the year 2000, Reliable Diamond Tool, Inc. (ReDiToo™) established sole representation for Precision Metallurgy. We are bringing you 60+ years of manufacturing experience in Diamond Tooling that is finely tuned for each specific material being worked. RDTI stocks a wide variety of specifications for all materials used in Concrete Construction, including the Stone and Terrazzo industries. RDTI offers Sales, Consulting, Instruction and Field Training of the proper use and care of diamond tooling, including the proper use and care of sawing, drilling, grinding and polishing equipment. Business owner J.W. Thompson has had hands on involvement in the Sawing, Drilling, and Grinding industries since 1979. ForConstructionPros.com/21024430
INTRODUCING THE FIRST BATTERY POWERED ROLLER SCREED Visit us at World of Concrete Booth # B50906
3 GEAR DRIVEN PLANETARY COUNTER-ROTATING HEADS
RT1-RC
3 Magnetic Tool plates
2 YEAR WARRANTY!
No SIDELOAD. LESS FATIGUE.
#GRINDMORE find us at booth: #031258
www.ForConstructionPros.com/10896948
Curb Roller Manufacturing provides contractors with innovative cost and labor-saving solutions. The patent pending Batt Screed offers unparalleled mobility, precision, and efficiency to contractors of all sizes. Our new Batt Screed utilizes a rechargeable battery for impressive power and run time. Eliminate exhaust fumes, power cords, and hydraulic power sources. It is easily transported between different areas of a work site. The Batt Screed is the system of choice for projects ranging from elevated floor pours to small decorative patios.
Call: 785-467-3132 www.curbroller.com/batt-screed www.ForConstructionPros.com/10073857
72 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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Husqvarna K770 Power Cutter
The K 770 has a high power-to-weight ratio design, meaning increased exactness and force of the cut, while the low weight and vibration-damped chassis ensure comfortable handling during long, productive work shifts. • Can handle blade diameters of 12 and 14 in. and provides a maximum cutting depth of 4 to 5 in. • Spring-loaded, semi-automatic SmartTension technology helps ensure the drive belt is always kept in the correct tension • Heavyduty cutting arm with threebolt joint maximizes longevity and durability • Features a 5-hp engine and a displacement of 4.48 cu. in. ForConstructionPros.com/21003358 World of Concrete Booth #C4537/ #O30166
MK Diamond SRX-2000 Green Cut Early Entry Saw
The SRX-2000 Green Cut Early Entry Saws are engineered for early entry sawing of crack control joints. • Pull start and electric start models both powered by a Honda GX 270 engine • Remotely mounted throttle and stop switch allow for quick operator access • Easy release depth control lever for convenience • Up-cut blade rotation facilitates keeping debris out of the joint • Anti-spall skid plate aids in keeping the edge of the joint smooth ForConstructionPros.com/21007197
U.S. Saws JS-130 Joint Cleanout Saw
The JS-130 is designed to mill out debris or old joint fill material prior to filling control joints with epoxy or polyurea. • 2 3/4-in. maximum depth of cut with screw-down depth control • Uses an 8- or 10-in. dry diamond blade • Up-cut blade rotation ejects debris into a vacuum port on the blade guard where the dust collector can capture it • Cleans joints at a rate of 20 to 60 fpm • Fully boxed heavy gauge steel frame for extra long life and straight accurate cuts • 13-hp Honda gasoline engine ForConstructionPros.com/21007218 World of Concrete Booth #S11115/#O32159
TERRCO INC
93 YEARS OF MANUFACTURING HEAVY DUTY DIRECT DRIVE FLOOR GRINDER/POLISHERS NEW FOR 2019 701-LP
SEE IT AT THE WOC
VISIT US OUTSIDE AT BOOTH
O32140
TERRCO INC 222 1ST AVE NW ● WATERTOWN, SD 57201 PH: 605-882-3888 ● info@terrco.com ● www.terrco.com
PROUDLY MADE
IN THE USA
-IN-HOUSE SERVICE AND TECHNICAL SUPPORT -HUGE PARTS INVENTORY
www.ForConstructionPros.com/10258872
www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor 73
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SPECIFICATION GUIDE: GRINDERS
Grinders
A compilation of technical information when choosing your next grinder. 1. CONCRETE POLISHING SOLUTIONS G-320D AND G-320D PRO GRINDERS With more than seven years in production, the G-320D and G-320D PRO set the standard in polished concrete equipment. With powerful motors, upgraded slip-clutches, and flex head technology, these machines not only have more than enough torque to grind through heavy mastics and coatings, but also make excellent polishing machines. ForConstructionPros.com/12152035 World of Concrete Booth #O41035 Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
G-320PRO Planetary
43” x 34” x 48”
896 lbs.
31 hp
N/A (Propane)
32”
565 to 715 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
Propane Rover
48” x 34” x 63”
1100 lbs.
31 hp
N/A (Propane)
32”
760 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
Electric Rover
48” x 34” x 63”
1300 lbs.
20 hp
30 amp
32”
800 lbs.
Planetary
Yes
2. EDCO MAGNA-TRAP, HEAVY-DUTY FLOOR GRINDER/POLISHER EDCO introduces Magna-Trap Systems, opening a new era in concrete grinding surface preparation equipment and tooling specifically designed for the rental industry. With both rental and retail opportunities, EDCO’s Magna-Trap System solves virtually every concrete grinder surface preparation application. The combined capabilities of the 4 core Magna-Trap tools, (Dyma-Dots, Dyma-Segs, Dyma-PCD w/ Backing Segment, StripSerts) are designed to solve most surface preparation applications. These options are available in the new Magna-Trap Rental Packages. ForConstructionPros.com/12140683 Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
EDCO Magna-Trap
48” x 26” x 40”
330 lbs.
5 hp (electric) / 18 hp (propane)
23 amps
22”
55 lbs. per tool
Non-Planetary
No, water hose hookup
3. THE PREP/MASTER JR. GRINDER BY STI The Prep/Master Jr. grinder by STI works extremely well in small, hard-to-reach areas that requires a more compact design — perfect for residential garage floors. This grinder is very aggressive, yet extremely easy to operate due to the smooth operation of the STI rotary gear system. In addition, the low price of the Prep/Master Jr. is very affordable and fits any project budget. ForConstructionPros.com/12298967 Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
Prep/Master Jr.
50” x 23” x 48”
450 lbs.
7.5 hp
40 amp
23”
265 lbs. (with pocket weights)
Non-Planetary
Yes
74 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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4. LAVINA ELITE SERIES The all-new Lavina Elite grinders are designed to improve contractors’ efficiency with new features, including: redesigned frame and integrated weights, dust-proof grinding head with low-friction chain drive, fine misting system for dust suppression, improved dust collection system, new floating skirts with flexible brush, LED lights, USB port, cup holder, and more. The Elite series also includes two remote-controlled electric grinders with intelligent remote control and intuitive touchscreen / HMI. ForConstructionPros.com/21036510
World of Concrete Booth #S10539/#O31353
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
L20GE
66” x 22” x 48”
645 lbs.
18 hp
N/A (Propane)
20”
364 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
L25RE Remote Controlled
76” x 28” x 47”
983 lbs.
10 hp
45 amp
25”
436 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
L30GE
76” x 32” x 48”
794 lbs.
19 hp
N/A (Propane)
30”
529 lbs.
Planetary
Yes
5. GENERAL EQUIPMENT SG12/E Designed for smaller-scale surface preparation projects, General Equipment Co.’s SG12/E single-head surface grinder offers high performance, durability and ease-of-use, making it ideal for anyone from professional contractors to do-it-yourself homeowners. Powered by a totally enclosed, fan-cooled 1.5-horsepower electric motor, the SG12/E features a single rotating disc with a 12-inch-wide working width. Applications for the SG12/E include grinding concrete surfaces, removing mastics, adhesives, epoxies and urethanes, breaking up deposits of grease and dirt, removing rubber carpet backing and industrial residues, and polishing more delicate terrazzo and marble floor surfaces. ForConstructionPros.com/12105500 World of Concrete Booth #S12145
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
SG12/E
39” x 19.75” x 40.5”
242 lbs.
1.5 hp
13.7 amp
12”
Variable
Non-Planetary
No
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
SG24/GH
55.25” x 37.50” x 38”
350 lbs.
11 hp
N/A
24”
Variable
Non-Planetary
No
6. MK DIAMOND SDG-7 SURFACE GRINDER • • • •
Designed to grind concrete surfaces while leaving a smooth finish Uses a diamond cup wheel for grinding, cleaning and leveling concrete Has a 120V, 15 amp motor and a 3,500 rpm disc MK-IXL vacuum dust shroud accommodates diamond cup wheels up to 7 in. in diameter
ForConstructionPros.com/10083344
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
MK Diamond SDG-7
34” x 17.5” x 32”
44 lbs.
1.75 hp
15
7”
7 lbs.
Non-Planetary
No
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
MK Diamond SDG-11
40” x 16” x 42”
212 lbs.
10.7 hp
N/A
10”
70 lbs.
Non-Planetary
No, hose hook-up
www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor 75
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SPECIFICATION GUIDE: GRINDERS
7. HUSQVARNA PG 820 RC WITH DUAL DRIVE TECHNOLOGY Husqvarna Construction Products releases a new, self-driven remote controlled version of Husqvarna PG 820 with patented Dual Drive Technology. The PG 820 RC enables significantly higher productivity and even better work results together with more ergonomic operation and transport. While running, the operator has time to prepare the next set of tools, adjust hoses, etc., which means better use of labor time. ForConstructionPros.com/12028632
World of Concrete Booth # C4537/#O30166
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
Husqvarna PG 820 RC
88” x 33” x 80”
1,182 lbs
17 hp
32 amps
32”
737 lbs.
Planetary
No
8. SASE PDG 5000P - 20” PLANETARY FLOOR GRINDER The PDG 9000P features a 20” grinding width. According to the company, this machine is pefectly balanced and is built for low maintenance. It includes a powerful Gx390 Honda Engine and connects to the SASE BULL dust extractors for dust-free operation. Other features include: • Operator Friendly Control Panel • Standard feature - flexible grinding heads • Includes both metal bond QCS and resin bond flex plates
ForConstructionPros.com/12299009
World of Concrete Booth # O40827
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
PDG 9000P
N/A
430 lbs. (without propane tank)
N/A
N/A
20”
220 lbs.
Planetary
N/A
9. HTC 270 EG - STAND UP EDGE GRINDER The HTC 270 EG is pioneering a stand-up edge grinding and polishing machine. It has a maximum head height of only 4.5 inches to fit under shelves. The HTC 270 EG comes standard with variable speed for complete control and a rotating, floating shroud with adjustable wheels to grind and polish up to the wall or slightly away.
ForConstructionPros.com/10247544
World of Concrete Booth #O30650
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
HTC 270 EG
41” x 20” x 33”
90 lbs.
3 hp
30 amps
10.6 in.
90 lbs.
Non-Planetary
No
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
HTC 800 RX
87” x 33” x 48”
1,200 lbs.
20 hp
40 amps
32”
530-726 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/Non-Planetary
Water Tank (Yes/No)
HTC 950 RX
53” x 38” x 50”
1,323 lbs.
20 hp
40 amps
36”
617-882 lbs.
Planetary
Yes
76 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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10. THE AZTEC ULTRAGRIND The award winning UltraGrind is Aztec’s propane-powered, planetary head, gear driven, concrete grinding and polishing machine. The UltraGrind is designed for the more aggressive concrete floor grinding and polishing applications, where the goal is to both remove material and highly polish concrete floors. • Industry-standard 2-inch exhaust ports for concrete dust vacuums • Powered by the new 20 hp Kawasaki 603cc engine, featuring a heavy duty canister air filter • CE, EPA/CARB, LEED and GS-42 certified. ForConstructionPros.com/12299019 World of Concrete Booth #O40949
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
UltraGrind
79” x 32” x 46”
930 lbs. with water tank
18 hp
N/A (Propane)
30”
Up to 780 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
The Refresher
43.25” x 32” x 42.25”
380 lbs.
18 hp
N/A (Propane)
30”
330 lbs.
Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
UltraEdge
50” x 32” x 42”
478 lbs.
18 hp
N/A (Propane)
13”
75-175 lbs.
Planetary
No
www.ForConstructionPros.com/10303328
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SPECIFICATION GUIDE: GRINDERS
11. TERRCO MODEL 3100LP-K The Terrco Model 3100LP-K features a 40 hp Kubota LP gas four head (12 stones) floor grinder. ForConstructionPros.com/12028642 World of Concrete Booth #O32140
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
Terrco Model 3100LP-K
72.25” x 29.5” x 74”
1,590 lbs.
40 hp
N/A
28”
1,220 lbs.
Non-Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
Terrco Model 6200
80” x 55” x 54”
2,300 lbs.
40 hp
46 amps / 460 V
53.5 in.
1,885 lbs.
Non-Planetary
Yes
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
Terrco Model 3100-3P-SPV
72.25” x 29.5” x 52”
1,425 lbs.
25 hp
60 amps/230V or 30 amps at 460V
28”
1,090 lbs.
Non-Planetary
Yes
New Products to Strengthen Eco-Hard MS • NEW Sodium Densifier Eco-Hard MS PLUS • Sodium Densifier with 40% solids 2D PL • NEW Fast-Setting Densifier for porous concrete For more information on these products find us at www.ameripolish.com or call 1-800-592-9320 www.ForConstructionPros.com/10076764
www.ForConstructionPros.com/10074638
78 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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12. ROTATOR SOLUTIONS, A DIV. OF DICKSON IND. DG-10-115 The DG-10-115 concrete grinder/polisher is built for constant commercial and rental markets. Narrow enough to fit through a standard 36” door, the DG-10-115 is ideal for grinding/polishing residential kitchens, bathrooms, and utility rooms. The machine uses115 VAC or 230 VAC single phase and features fully adjustable handle bars which fold down for easy loading in pickups, SUV, and even station wagons. ForConstructionPros.com/12028649
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
DG-10-115
36” x 24” x 37”
225 lbs.
1-1/2 hp standard; 2 hp optional
15 amps; 20 amps
10 in.
Full weight of machine
Non-Planetary
No
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
DG-10-10-115
36” x 24” x 37”
350 lbs.
Dual 2 hp; 230 volt
15 amps
20 in.
Full weight of machine
Non-Planetary
No
Model
Dimensions (LxWxH)
Weight (lbs)
Horsepower
Amperage
Grinding Path (in.)
Grinding Pressure
Planetary/ Non-Planetary
Water Tank (Yes/No)
Worx
100” x 64” x 76”
3,500 lbs.
40, 60 or 80 hp
N/A
Up to 16 in.
N/A
No
No
www.ForConstructionPros.com/10075944
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FOUNDATION Q&A
By James R. Baty II A crane delivers forms to the jobsite. Photo Credit: Concrete Foundations Association
Finding a Way Through the Confusion OSHA Crane Operator Certification
Q
uestion: There has been an increase in the communication of regulation for crane operator certification from OSHA and now we are being told our operator must be certified. We own a single articulating boom truck that delivers baskets of forms to the jobsite much like the delivery trucks from the local lumberyard. Is it true we must now seek certification for
this operator and if so, by what date and where can we go to get it?
A
NSWER: Crane operator certification has been a decade-long discussion topic around the concrete foundation industry, well actually all industries. OSHA published the final crane standard on August 9, 2010 after nearly a decade of negotiated rule making all the way back to 2003. During this time period, the serious discussion of employer
responsibilities for any and all cranes was completed, and a four-option certification scheme developed. These were: Option 1: Certification by an independent testing organization accredited by a nationally recognized accrediting organization; Option 2: Qualification by an employer's independently audited program; Option 3: Qualification by the U.S. military; or Option 4: Compliance with qualifying State or local licensing
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requirements (mandatory when applicable).
THE REGULATION HISTORY These options were documented in 29 CFR Part 1926.14272. Once published, a series of delays in the ruling for Crane Operator Certification proceeded in order to ensure competency and to establish proper training and certification programs. Set to take effect on November 10, 2017, the ruling was then delayed for one more year until November 10, 2018 in order to coincide with further updates to subpart CC, known as “the crane standard”. While delays like this begin to question the actuality of any final implementation step, they ultimately provide for adequate planning and preparation for employers to determine their ultimate responsibility and leadership for the regulation. The final ruling becomes effective on December 9, 2018 and employers have until February 7, 2019 for evaluation and documentation requirements. This is the hard edge to the issue but given your position in the residential concrete foundation construction industry, there are a lot of soft or gray edges to the issue that are both an opportunity and perhaps a requirement for you to pursue. Under this final rule, “employers are required to train, certify/license, and evaluate operators to safely perform crane activities.” According to the final ruling, it is likely that operators in this industry will be certified on the chosen crane type only since capacity is more a function of reach for your operations. However, OSHA does option for crane type and capacity certification as well. What does this mean for employers in this industry and how, if at all, are you exempt from the requirements? This may be seen as a common misconception to the language of the ruling and is why this is also an opportunity. The CFA hosted a presentation by Jay Sturm, certification and training consultant for Cranes 101, an accredited third-party certification company during Concrete Foundation Convention 2018 in Midway, Utah.
During that presentation, Jay offered, “I take this business and separated it into two pieces. As a business owner, I find it important to look at the perspective of liability as well as that of safety. We all want our workers to go home safe and to make for a safe jobsite. We also have to consider liability. There’s things that we are going to do to protect our liability that will also enhance safety.” When looking at the requirements of OSHA’s final ruling, the employer responsibilities for accessing, providing and paying for operator certification are important to understand but also seeing it as perhaps the best way to protect the company while advancing worker proficiency are your opportunities. OSHA makes it a mandate (for most oper-
for taking material from its deck and placing it down on to the ground, it is exempt because the equipment is viewed as not participating in the construction standard. “If it is being set, however, in a place where the material (or in the case of baskets of forms) is to be used, it is now a part of the construction standard and the operators are no longer exempt.
ations) but the employer ultimately chooses the path of implementation. Sturm explains that for the crane type known as knuckleboom, which typifies the majority of equipment used by the residential concrete foundation industry, operators of this equipment are “exempt” from required certification. However, “in the same breath that the knuckleboom’s are exempt, there are exemptions to the exemptions.” When the piece of equipment is being used for delivery, it is exempt from the regulation as it is not involved in an act of construction. This means that when the equipment is used solely
Sturm’s advice is that if you are trying to avoid citations and OSHA scrutiny, the best decision is to pursue certification and comply with the construction standard at all times. This also protects you from legal liability in the event that an incident should occur and investigation point back to a certification requirement.
When the piece of equipment is being used for delivery, it is exempt from the regulation as it is not involved in an act of construction. This means that when the equipment is used solely for taking material from its deck and placing it down on to the ground, it is exempt because the equipment is viewed as not participating in the construction standard. Photo Credit: Concrete Foundations Association
HERE IS WHAT YOU SHOULD KNOW • OSHA’s final ruling requires employers to get their operators certified by a third party. • OSHA’s final ruling requires employers to qualify an operator
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FOUNDATION Q&A exempts operators from cranes with a manufacturer-rated hoisting/lifting capacity of 2,000 pounds or less. • Each operator certification has a 5-yr duration with a renewal requirement of additional recertifying. • Any incident that occurs with a certified operator will require re-training for the piece of equipment and the condition of operation.
WHAT’S NEXT? Numerous baskets of forms are in place on the jobsite. Photo Credit: Concrete Foundations Association
on the specific equipment they will be using and for the specific operation they will be conducting. • OSHA requires the employer/ operator to run a piece of equipment according to the manufacturer’s qualifications and specifications. The owner’s manual has now become part of the law as manufacturer’s state in this document that you must read and understand this manual prior to operating the crane a statement that becomes part of their specification for you owning the equipment. • As an employer, you should own a copy of ASME B30.5 (Mobile Cranes) or B30.22 (Articulating Cranes) standards. These can be ordered in digital or print format for $94.00 each at ASME.org. • Certification for an operator includes classroom education, passing a written examination and passing a practical (physical) examination. These certifications are portable, meaning they are owned by the operator and not the employer. • Status of state adoptions and specific licensing requirements for the regulation can be found in system databased like that at Cranes 101, http://www. cranes101.com/Licensing.php. • OSHA requires “only operators engaged in construction activity” to be certified under its standard. • OSHA’s revised 29CFA 1926.1427
While the first response to new regulatory action is almost always to complain about another layer of control, another hoop to jump through or another cost to burden, CFA leaders are finding that this regulatory action can be met with an optimistic look at developing the workforce and as Sturm states, choosing safety that comes from limiting liability…in essence, risk management.
(1-day). These courses can also be scheduled with third party providers by contacting them directly and scheduling an operator to attend one of several course sites that exist with pre-determined schedules. Certification for operators will run between $1,500 and $2,500 on average plus expenses incurred during the time away. Want to know more? Contact CFA Executive Director, Jim Baty at 866-232-9255 or by email at jbaty@cfawalls.org. CFA hosts a member Hotline, where issues can be discussed freely for a range of experiences and resolutions. The Concrete Foundations Association mission is to support the castin-place contractor as the voice and recognized authority for the residential concrete industry.
References:
1. Cranes and Derricks in Construction: Operator Qualification, published by the Occupational Safety and Health Administration, as maintained at www.osha. gov </u> | https://www.gpo.gov/fdsys/pkg/ FR-2018-11-09/pdf/2018-24481.pdf 2. 1926 Subpart CC – Operator qualification and certification, published by the Occupational Safety and Health Administration, as maintained at www.osha. gov
Right: Concrete forms have been delivered to the jobsite via a trailer. Photo Credit: Concrete Foundations Associatio
In order to begin bridging the gap between opportunity and requirement; liability and safety, the Concrete Foundations Association will begin hosting third-party certification sessions using Cranes 101 and Industrial Training International. These weeklong sessions will provide the three facets of an NCCCO-certified course including classroom education (2-3 days), a written examination (1-day or afternoon) and a practical examination
Jim Baty is the Executive Director for the Concrete Foundations Association after having served as Technical Director since 2001. He is currently chair of ACI 332 and a voting member for ACI 306 with priorities of establishing better guidance and structure for residential concrete construction. For more information on this topic, contact Jim Baty at jbaty@cfawalls.org. Find out more at www.cfawalls.org. The CFA is a national association for professionals with the mission to support the cast-in-place contractor as the voice and recognized authority for the residential concrete industry. ACI 332 is the Residential Concrete committee for the American Concrete Institute and as a code committee is seeking professionals from all aspects of this industry with an interest in participating in the development of expanding and strengthening this concrete code.
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WOC Idea File WHEN THERE’S CONCRETE TO CONQUER SKILSAW HELPS GET THE JOB DONE. The MedusawTM and MedusawTM Walk Behind deliver a complete concrete cutting system with Worm Drive power and durability. Used wet or dry, the OSHA complaint dual integrated dust management system takes dust out of your way. The MedusawTM offers a unique Cut-ReadyTM adjustable plunge lock and a pivoting pointer for unmatched precision and convenience The MedusawTM Walk Behind is the ONLY Worm Drive walk behind concrete saw. The adjustable handle extends to optimal height and folds for easy transport. With this lineup, you’ll power through the toughest concrete jobs. You can always count on SKILSAW®. Stop by our booth to try out these saws for yourself. Visit us at World of Concrete, booth #O31752, and experience the SKILSAW OSHA compliant, Worm Drive Concrete Cutting lineup for yourself.
Visit SKILSAW.com
INNOVATION!
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The Leaders in Roller Screed
Trolley System
In order to GROW a business, you need to become as versatile as possible, so you can bid on a wide range of projects. This means that when it comes to concrete placement, the screed system you choose, must be able to take on any project imaginable. If your screed can’t take on every pour out there, “you have the wrong screed”. No other screed on the market today offers all the versatility that the Lura screed system can. See for yourself and, “Compromise Somewhere Else”.
Phone: 701-281-8989 Fax: 701-281-8995 Email: mailto:sales@luraconcretescreed.com http://www.lurascreed.com www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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WOC Idea File PROBLEM FREE CONCRETE VIBRATOR RENTALS 800-989-8423 · www.northrockindustries.com · Info@northrockindustries.com 4-Stroke Backpack Vibrator • Honda GXH-50 4-stroke engine • 50cc - 2-1/2 hp • Regular gas - no need to mix oil with gas • Ergonomic molded back pad and strap
Electric Concrete Vibrator • • • •
Three models to meet any job Built to take a beating High strength cast aluminum housing Rugged shock absorbing frame
Ceiling Grinder Self-Contained Concrete Vibrator • Highly portable vibrator for light-duty and medium-duty concrete jobs • Tanaka 22cc gasoline engine • Standard 18” flexible shaft (custom sizes available)
• • • • • •
Handles ceiling heights from 7’ to 12’ 1.5 HP electric option or 4 HP gas option Self aligning grinding head Optional dust collection system Lightweight aluminum frame Adjusts to different ceiling heights in seconds
N O R T H R O C K
I N D U S T R I E S ,
I N C .
The newest addition to the Ligchine International laser guided screed family of product is the ScreedSaver PRO 220. The PRO 220 combines the classic durability and accuracy of the original ScreedSaver MAX 200, with the technological advancements and customer requested design changes already present on the top-of-line ScreedSaver BOSS 240. The PRO 220 can screed up to 220 sq. ft. per pass and comes equipped with a touchscreen diagnostic display, 360-degree hydraulic turn table and undercarriage for unrivaled machine navigation, LED lighting, concrete additive screed head spray system, and a fuel-efficient Kubota diesel engine. The compact design, coupled with its ability to turn out the same square-footage as other larger, mega-size boom-operated screeds, puts the PRO 220 in a class of its own.
www.ligchine.com 86 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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WOC Idea File ACI Inspector Certification Exams Now Offered at ACI Concrete Convention and Exposition The American Concrete Institute is now offering all ACI inspector certification program exams at the Concrete Convention and Exposition. The three ACI inspector certification programs are: • Concrete Quality Technical Manager (CQTM). • Concrete Construction Special Inspector (CCSI) • Adhesive Anchor Installation Inspector (AAII) “Offering these exams at ACI Conventions is part of an effort to increase convenience and availability for ACI’s inspector certification programs,” said Michael Morrison, Manager, Certification Program Development, American Concrete Institute. The next opportunity to take these exams will be at the Concrete Convention and Exposition in Québec City, QC, Canada on Wednesday, March 27, 2019. For more information on ACI’s certification programs and requirements please visit concrete.org/certification.
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SUPERHERO What Evil Lurks in Clouds of Dust?
Pulse-Bac Knows. Have no fear, Pulse-Bac is the vacuum that makes OSHA Silica Compliance Easy. We fend off fines with our dynamic duo of patented Automatic Filter-Cleaning Technology and HEPA Certified Filtration. This means you’re covered for Table 1 tasks and beyond. Plus you never have to stop work to clean a filter. Check out the pulsebac.com to see which superhero you want on your team.
• 100% Automatic. No Manual Filter Cleaning. • HEPA Certified Filtration • 15 years of Proven Jobsite Performance.
WHEN OSHA COMES AROUND
• Design & Built in America.
www.pulsebac.com 9384 Ridgeview Tulsa,OK 74131 • 866-954-9700
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WOC Idea File
BUILT FOR YOU! From the occasional finisher to the large concrete professional, Wacker Neuson has the walk-behind trowel to meet your needs. • Built for easy operation: Patented dynamically-balanced trowels offer nearly effortless operation and maximum control at all speeds with all types of blades, including pans. • Built with productivity and safety in mind: A gyroscopic sensor and gearbox brake detects the motion of the handle and stops the engine and handle rotation, providing added protection from the operator being struck by a runaway handle. • Built with a variety of choices to complete any type of job: 24-inch edging model, 36-inch and 48-inch diameters, horsepower options, variable speeds and handle configurations to provide versatility to meet individual preferences and job site conditions.
www.wackerneuson.com
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WOC Idea File Introducing a new and improved padding and strap system for our backpack concrete vibrators Oztec’s improved padding and strap system is designed to meet the needs of concrete contractors. We have added wider shoulder straps with generous sewn-in-place padding to distribute weight more evenly. Our quick adjustment buckles allow users to easily fit the straps to their individual needs, reducing fatigue and downtime on the job. The back pad has been upgraded to span the full length of the backpack with thicker, more comfortable padding. We have done all of this while maintaining a system that is rugged and easy to repair. Oztec has always been, and continues to be, committed to innovating and improving concrete consolidation equipment to meet the demands of concrete contractors
Contact Oztec at: 1-800-533-9055 mail@oztec.com or visit us at World of Concrete, booth #N2236
The Pearl Reactor™ Concrete/Masonry blade is designed to cut concrete, reinforced concrete, masonry, brick, block, paver bricks, soft stone and much more. It is engineered with Pearl’s ADM™ (Advanced Diamond Matrix) diamond pattern and layering technology. The Pearl Reactor™ provides a fast cut and long life when used on concrete and masonry applications. It is ideal for use on stationary saws, hand held saws and walk-behind saws. • 12mm rim • Engineered with ADM™ (Advanced Diamond Matrix) diamond patterning and layering technology. • Extra long life. • Laser welded diamond segments. • High tensile steel core prevents blade wobble and improves durability. • Carbide inserts to reduce undercutting on abrasive materials. • Designed to be used on a variety of materials. • Wet or dry cutting. 20 HP Max.
Applications: For Concrete, Reinforced Concrete, Masonry, Brick, Block, Paver Bricks, Hard Brick, Refractory Material, Soft Stone, Sand Stone.
1-800-458-6222 | GranQuartz.com www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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WOC Idea File ASL Machines USA is a concrete grinder manufacturer that produces flawless gear-driven grinders with a 2 year warranty. Our grinders vary from electrical to powerful propane powered machines, and we count with the best U.S. Customer service. WOC Booth #031258
INTRODUCING THE FIRST BATTERY POWERED ROLLER SCREED Visit us at World of Concrete Booth # B50906
Curb Roller Manufacturing provides contractors with innovative cost and labor-saving solutions. The patent pending Batt Screed offers unparalleled mobility, precision, and efficiency to contractors of all sizes. Our new Batt Screed utilizes a rechargeable battery for impressive power and run time. Eliminate exhaust fumes, power cords, and hydraulic power sources. It is easily transported between different areas of a work site. The Batt Screed is the system of choice for projects ranging from elevated floor pours to small decorative patios.
Call: 785-467-3132 www.curbroller.com/ batt-screed
In 1993 MAX developed the World’s First battery powered rebar tying tool. Since then MAX rebar tying tools have been revolutionizing rebar tying all around the world. The TwinTier RB441T is a 6th generation MAX Re-Bar-Tier. The RB441T is the ONLY dual-wire feeding battery operated rebar tying tool on the market, world-wide. The TwinTier's name is derived from its innovative wire feeding mechanism which simultaneously releases two strands of 19ga. tie wire. TOOL BENEFITS DOUBLE THE SPEED The TwinTier’s Dual Wire Feeding Mechanism™ increases productivity COST SAVINGS The TwinTier’s Wire Pull-Back Mechanism dispenses the precise amount of wire needed to form a tie, reducing wire usage. It also pulls the wire back to securely tie rebar. BOOTHS: C3019 AND O31454
AVAILABLE WIRE TW1061T REGULAR STEEL WIRE
TW1061T-EG ELECTRO. GAV. WIRE
TW1061T-PC POLYESTER COATED WIRE
SHORTER TIE HEIGHT The TwinTier’s Wire Bending Mechanism™produces a shorter tie height. Less concrete is needed to fully cover a wire tie. HEALTH BENEFITS Use of the TwinTier reduces the risk of developing carpal tunnel syndrome and other muscular skeletal disorders APPLICATIONS
257 E 2ND STREET, MINEOLA, NY 11501 WWW.MAXUSACORP.COM 800.223.4293
Commercial Buildings, Foundations, Road Construction, Bridges, Precast Plants, Radiant Heating Tubes, Electrical Conduits, Tilt-up Construction, Pools, Basements, and Sandbags
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WOC Idea File DECORATIVE CONCRETE BY
EUCLID CHEMICAL
PLASTIC CHAIR SCREED SUPPORT SYSTEM
Spin Screed has introduced a new plastic chair screed support system that permits contractors to install flatter concrete faster. The plastic chairs, set on rebar, are used to support vertically a narrow 2-inch tall steel bar instead of a pipe commonly used by contractors when finishing concrete. Unlike a pipe, the narrow steel bar leaves only a small void in the concrete when it is removed thus saving the contractor time required to fill the void and thus producing a flatter concrete surface. Please visit www.spinscreed.com to see a video of this new screed support system.
SPIN SCREED, INC. Toll Free: 888-329-6039 www.spinscreed.com
LEVEL TOP PC-AGG Polishable Self-Leveling Overlayment with Natural Aggregate With advanced cement technology, high quality aggregates, and proven fiber technology, Level Top PC-AGG takes polishable overlays to the next level. This self-leveling formula provides excellent adhesion, superior toughness and long term durability to either new or worn concrete substrates that need a
In 2000, Reliable Diamond Tool, Inc. established sole representation for Precision Metallurgy. We bring you 60+ years of manufacturing experience in Diamond Tooling. RDTI stocks a wide variety of specifications for use in Concrete Construction.
new look. With the ability to be ground and polished in as little as 24 hours after placement, it is perfect for fast track applications. Unlike traditional concrete that does not have all of the aggregate suspended at the surface, Level Top PC-AGG can be ground and polished to achieve the appearance of polished concrete with very uniform aggregate distribution.
WWW.RDTUSA.COM
EUCLID CHEMICAL
www.euclidchemical.com
MQ WHITEMAN EXPANDS INDUSTRY LEADING TROWEL LINEUP. MQ Whiteman, the leader in concrete finishing, introduces the new InstaClutch™ line of walkbehind concrete finishers. The InstaClutch™ drive systems are available on MQ Whiteman 36-inch and 46-inch diameter trowels. The friction clutch disengages if the handle is released during operation bringing the machine to a complete stop within a quarter turn of the handle. It also allows the operator to safely & immediately resume operation without having to restart the engine. MQ Whiteman InstaClutch power trowels feature a hinged access panel to simplify blade change out and routine service, rugged spider assembly and handles fitted with QuickPitch™ or standard pitch controls. For more than 75 years professional contractors have turned to MQ Whiteman power trowels for innovation, quality and dependable performance. Learn more about Multiquip products at www.multiquip.com.
www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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WOC Idea File Collomix LevMixMobile Mixing Machine. Mixing and Transporting in one operation. For selfleveling and leveling compounds. Ideal for floors and subVF-Venieri earthmoving equipment are floors. built for power and designed for agility. These simple to operate articulating loaders Highly and backhoes bring to every job a higher Built for power, designed for agility these breakout force and quick attachment change effective articulating loaders supply higher breakout force, out. The cabs provide excellent ergonomics mixing with 360° visibility, and intuitive controls for out, cabs quick attachment change designed for maximum operator efficiency and control. maximum operator efficiency paddle with excellent For the full line of available loaders and ergonomics and intuitive 360° visibility backhoes visit: ams-venieri.com. VF-Venieri controls,prevents loadersand are available dealers to every job. simplethrough operation the and Applied Machinery Sales (AMS). See VF-Venieri earthmoving equipment at Ask us what these loaders canformation do for you! of lumps; World of Concrete19, Booth# C6039. all material is mixed thoroughly. Dealer info@appliedmach.com opportunities. 803-327-4949
www.collomix.us
803-327-4949 / info@appliedmach.com / ams-venieri.com
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WOC Idea File
TRAKER
EZ Polish System is designed to deliver exceptional results using fewer steps than traditional polishing. Our tooling combined with our chemicals reduce installation time. While the integral use of our RA Meter ensures sustainable results every time.
®
New Tool to Install Contraction Joints
The TRAKER® is a manually operated tool for installing contraction joints in fresh concrete. TRAKER installs joints at 75% less cost, 4 times faster and dust-free compared to sawcutting. WOC Booth# S13108 www.aaronhilbert.com
WOC Booth #031258
SKY SCREED™ 25
Booth #C5303
Elevating your business with the World’s 1st Knuckle Boom Laser Screed® machine.
NEW 2019
Vote for Somero for
•
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239.210.6519 somero.com www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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Does your concrete, tile, terrazzo or hardwood floor require extreme protection from machinery and foot traffic? SkudoBoard offers significantly improved protection compared to hardboard or plywood. • Impervious to water
Oneida Air Systems CC500 Dust Extractor The new CC500 is a portable cyclonic dust extractor with an adjustable height stand, HEPA rated filter media, and large capacity containment options. With three onboard motors and exceptionally high CFM, the CC500 can power through grinding, cutting, and drilling to safely remove silica dust, including terrazzo. Made in USA. Learn more at oneida-air.com/concrete. Booth #S13549
• Resists warping and curling • Extremely high impact protection • Lightweight, rigid 4’ x 8’ high density plastic • Also available with a fabric back
www.skudousa.com
Concrete Pump Supply announces new Envirogel, construction waste water solidifier. This powdered product can be used to instantly turn any wastewater or slurry into a disposable solid. One two pound bag of Envirogel can solidify roughly 20 gallons of liquid. Please call us at 877-434-7867 or go to ConcretePumpSupply. com to order.
94 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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WOC Idea File Guidance Control
TPC-Concrete Paver
Hydraulic operated asphalt paver with a simple yet durable design. This machine will handle all jobs up to 7 feet. From Trenches, side walks, Cart paths, and patch work.
MADE IN THE U.S.A
Guidance control slip forming concrete paving machine. Will pave 60”-96” with no forms.
Kraft Tool Co.® Adds Gator Tools™ as a Signature Brand Kraft Tool Co.® purchased Gator Tools™ and will be adding it to the list of Kraft’s signature brands. The Gator Tools™ line offers high-quality concrete tools made in the USA. Gator Tools™ are made from Gator Loy™ a special aluminum alloy for toughness and strength. Kraft will continue to offer a variety of high-quality Gator Tools™ products including Diamond XX™ screeds, Float Kits, Gator Skin™, and more. Visit us at booth S12039 at the 2019 World of Concrete. www.KraftTool.com
TP44-TD
Highest quality, most dependable, Curber on the market today. This unit has many different style molds. Can do both Concrete and Asphalt
105 School House Road Cheshire, CT 06410 www.salsco.com, sales@salsco.com 800-872-5726 (Toll Free) 203-271-1682 (Local) 203-271-2596 (Fax)
Simpson Strong-Tie SET-3G™ high-strength epoxy anchoring adhesive is uniquely formulated to install and perform in a variety of environmental conditions and temperature extremes, and is now code listed. ®
Featuring exceptionally high bond-strength values, SET-3G is the first anchoring adhesive in the industry to permit ductile anchorage 13/4" away from a concrete edge. Key Features 1. Included nozzle ensures 1:1 ratio and allows for installation in downward, horizontal and overhead orientations 2. Code listed 3. Install in dry, water-saturated or waterfilled holes in temperatures between 40°F (4°C) and 100°F (38°C) 4. Proudly manufactured in the USA For more information about SET-3G high-strength anchoring adhesive, including detailed strength design data tables for various surfaces and drill bits, code listings, cure times and more visit strongtie.com/set3g.
www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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NEW FOR 2019
MODEL 701-LP SEE IT AT THE WORLD OF CONCRETE 2019
GelMaxx USA has your answer with our two-part slurry separating and solidifying solution. Our products consist of organic material making it safe for the environment and operators, while maintaining OSHA compliance. WOC Booth #031362
TERRCO INC 605-882-3888 info@terrco.com WWW.TERRCO.COM
Pour concrete up to 60% faster and with less labor! Powered by 12 horsepower gasoline engines, the Line Dragon will easily maneuver over rebar grid, radiant heat lines, nelson studs, floor decking or other prepared surfaces. Weighing in at about 1,000 pounds means less weight per square inch of footprint than most manual laborers. The ‘Placer’ is attached to the end of the delivery line and places concrete where you need it while the ‘Dragger’ is 20’ away keeping the excess line out of the pouring area. Our machines move forward, backward, left, right or oblique. The placing boom swings 360 degrees making all areas accessible to the Placer. Both machines are radiocontrolled with fully hydrostatic controls for easy operation at a safe distance making your employees more efficient with huge savings.
717-875-1153 www.linedragon.com 96 Concrete Contractor | January 2019 | www.forconstructionpros.com/concrete
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INDEX ADVERTISER............................... PAGE
ADVERTISER............................... PAGE
Aaron Hilbert LLC.................................... 66, 93 American Concrete Institute................... 15, 87 Ameripolish.............................................. 78, 92 Applied Machinery Sales........................ 65, 92 ASL Machines USA.................................. 72, 90 BackSaver................................................. 77, 93 Bauma............................................................. 83 Brokk Inc................................................... 57, 97 Collomix USA........................................... 58, 92 Compact Excavator Sales............................. 13 Concrete Pump Supply............................. 2, 94 Cresset Chemical Company................... 50, 94 Cummins Engine Company Inc.................... 29 Curb Roller Mfg. LLC............................... 72, 90 Denver Concrete Vibrator....................... 21, 97 Diteq Corp......................................... 41, 67, 90 EZ Polish System...................................... 66, 93 GEICO............................................................ 53 GelMAXX.................................................. 64, 96 Gomaco Corporation...................................... 5 GranQuartz......................................... 49, 51, 89 Increte Systems by Euclid Chemical Company................................. 56, 91 Kraft Tool Co............................................ 16, 95 Ligchine International Corp.................... 31, 86 Line Dragon, LLC................................44-45, 96
Lura Enterprises, Inc................................ 71, 85 Max USA Corp......................................... 63, 90 Metzger/ McGuire................................... 56, 95 Minnich Manufacturing................................. 19 Multiquip Incorporated........................... 23, 91 Northrock Industries Inc.......................... 33, 86 Oneida Air Systems................................. 17, 94 Oztec Industries Inc............................... 89, 100 Pulse-Bac Vacuum Systems LLC........68-69, 87 Putzmeister America..........................24-25, 92 Reliable Diamond Tools.......................... 20, 91 Salsco Inc.................................................. 39, 95 Simpson Strong-Tie Co., Inc................... 43, 95 SKILSAW / Chervon North America....... 11, 85 Skudo USA Inc......................................... 47, 94 Slip Industries................................................. 78 Solomon Colors....................................... 59, 97 Somero Enterprises................................8-9, 93 Spin Screed.............................................. 64, 91 Stego Industries..................................36-37, 88 Superabrasive Inc.......................................... 55 Terrco Inc.................................................. 73, 96 Vacuworx Global.............................................. 7 VoidForm Products, Inc........................... 79, 96 Wacker Neuson Corporation.................. 61, 88 Wirtgen America Inc...................................... 35
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www.forconstructionpros.com/concrete | January 2019 | Concrete Contractor
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THE LAST PLACEMENT
By Brad Humphrey
What Do Construction Foremen Really Do?
T
oday, the construction foreman is one lost soul! For many, it is merely a glorified best worker or leadman position. They really aren’t in charge of anything nor do they really have the authority to execute needed plans on a site. What a complete waste of human potential! The construction foreman, if positioned and supported right, should be one of the most important and critical leaders to achieving success for the construction projects engaged. Let me share with you what good construction foremen demonstrate. 1. Seek work plans early The best foremen are those who regularly ask for their next project's file. They want to get a head-start in reviewing plans, locations, job profile information on the customer, surrounding challenges, etc. Receiving the project info on the same day they are to start leads to quality, safety and morale problems. 2. Study plans and ask questions The best foremen want to study their plans, review their detail list of needed tools, equipment, materials, and to identify early who are the other contractors involved on the project. 3. Follow proven methods The best foremen don’t “experiment” without a prior reason and discussion to do so. “Proven Methods” best represent a company’s Standard Operating Procedures. For the smart contractor who has taken the time and pain to develop written SOPs, the foremen will find greater achievement. Contractors who follow written SOPs, increase their productivity, foremen pay, project quality, and make going home every day healthy and
unhurt a 100% guarantee. 4. Update their leaders regularly The best foremen simply keep their leaders updated on a regular basis. They are transparent and realize that their leader, if updated, is better prepared to answer questions from the customer when caught off guard, AND, provide greater insights and consulting back to the foreman that can help the job process improve. 5. Prepare & organize every day The best foremen prepare each new project, and each new day, as if it were the first time they led a project. There is a reason great athletes, and great teams, practice warm-ups and basic drills daily, prior to entering the more intellectual part of their preparation for their next opponent. This can include ensuring that every truck and trailer is packed with all the needed tools, equipment, components, etc. This moves forward by doing a daily walk-about their jobsite, upon arrival, to ensure that no safety risks exist, and that overnight “project demons” have not changed or damaged the previous day’s effort. 6. Explain the who, what, how much The best foremen consistently communicate with their crews who is assigned to what action and efforts. They also communicate what the needs of the project are that day. “Do we need to do some extra housekeeping? Do we need to start tearing down, clean, clean-up and stack the forms, etc.?” And, the best foremen always discuss “how much” needs to be accomplished by lunch or the end of the day. This sets daily goals and gives the crew something tangible they can strive to achieve.
7. Hold crew, selves accountable The best foremen hold their own workers accountable by insuring the timely arrival to work, proper use of time during the day is followed, and that no one quits for the day too early and not before there is some level of housekeeping completed. When a worker fails in their duty, they are spoken to first, reprimanded on a second incident, perhaps disciplined on a third offense, and even terminated on a fourth. 8. Use authority wisely, respectfully The best foremen use authority as needed to get jobs ready, executed and cleaned-up so they can move to the next project. The best foremen feel empowered to lead their workers to be the beset crew possible in completing work, win the trust of their customers, and continued faith in them by their senior leaders. The best foremen realize their work efforts and results influence their pay, their level of trust and respect among senior leaders and the owner, and, has the most influence for their own promotion to higher levels of responsibility. What do foremen really do? I think a lot personally. Show me a great foreman and I’ll show you a leader who trains their followers, spends more time with new employees and those who are challenging the SOPs or the company’s requirements, and finally, who takes pride in being a leader. Be the foreman who strives for excellence. Pay no attention to other foremen who make fun of your preparation and organizational habits, knowing you will be rewarded while other non-performing foremen may find themselves not doing things the right way…for another contractor.
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