June 2016 Concrete Openings

JUNE 2016

Can You Dig It? Core Drilling Indy’s Deep Rock Tunnel System

Texas Newspaper Building Renovated with Wall Saw Final Silica Rule Released by OSHA NYC Water Siphon Channel Core Drilled

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President’s Page

KEVIN BARON CSDA President

I

t was good to see some of you during the CSDA Convention & Tech Fair in sunny Palm Desert this March. The convention is always a fantastic networking event and the resort was beautiful. The keynote speaker, record-setting pilot Dick Rutan, was outstanding, the presentations were informative and the panel discussions were both insightful and fun. Thanks to all those contractors and manufacturer representatives who dedicated their time and efforts to provide a great range of sessions. I’d also like to thank Pat, Erin and the CSDA staff for a putting together a wonderful convention program.

Even before the start of the main convention, committee chairs and committee members were hard at work in meetings, continuing their efforts to move the association and industry forward. Thank you. Your unwavering commitment to build a better CSDA is greatly appreciated.

Before I move on to my next very important topic, I must also say thank you to the outgoing members of the CSDA Board of Directors. It has been my pleasure to work with you. A very enthusiastic welcome is given to the incoming Board members and I look forward to working with each of you over the next year.

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Now, most of you are aware that OSHA released its final silica ruling in March. CSDA has been at the forefront of this important industry issue for years, with Executive Director Pat O’Brien and Next Generation Committee Chair Kellie Vazquez—to name just two—working diligently to ensure that the voices and concerns of CSDA contractors are heard and understood. CSDA is a member of the Construction Industry Safety Coalition (CISC) with 24 other trade associations and has agreed to support any litigation claims put forth by the Coalition. This is the time to join CSDA. Become a member now, join the fight and have a say in the future of your industry. Together we can make a difference and continue to shape an industry that is both safe and prosperous for those in it.

The association has meetings scheduled in Minneapolis, Boston and Dana Point, California throughout the rest of 2016 that are open to all and free to attend. Review the calendar on page 60 for all the details or visit www.csda.org. I’m looking forward to meeting you at one of these upcoming events and hope you will participate.

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CSDA OFFICERS

CONCRETE CASES

President, Kevin Baron Western Saw, Inc. kevinb@westernsaw.com Vice President, Jack Sondergard Central Concrete Cutting, Inc. Jacksondergard@sprynet.com Secretary/Treasurer, Mike Orzechowski DITEQ Corporation mikeo@diteq.com Past President, Judith O’Day Terra Diamond Industrial joday@terradiamond.com Executive Director, Patrick O’Brien Concrete Sawing & Drilling Association pat@csda.org CSDA BOARD OF DIRECTORS (Terms expiring 2017)

Can You Dig It?

Core Drilling Indy’s Deep Rock Tunnel System

6

Tim Beckman Cutting Edge Services Corp. beckman@cuttingedgeservices.com Matthew Finnigan National Concrete Cutting Inc. matthewf@nationalconcretecuttinginc.com Dan Foley Cobra Concrete Cutting Services Co. danfoley@cobraconcrete.com Greg Lipscomb Diamond Products Limited glipscomb@diamondproducts.com Mike Nelson K2 Diamond mike.nelson@k2diamond.com

Read All About It!

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Doug Walker Douglas H. Walker dwalker6550@gmail.com CSDA BOARD OF DIRECTORS (Terms expiring 2018) Peter Bigwood Brokk, Inc. peter@brokkinc.com Scott Brown ICS, Blount Inc. scott.brown@blount.com

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Concrete Cutter Makes Headlines During Newspaper Office Renovation

Where There’s a Drill, There’s a Way

Large-Diameter Core Drilling Creates Path for NYC Water Siphon

Matthew Dragon GPRS, Inc. matthew.dragon@gp-radar.com Bennett Jones Advanced Concrete Sawing, Inc. bennett@acsawing.com Kevin Schmitt Husqvarna Construction Products kevin.schmitt @husqvarna.com Kellie Vazquez Holes Incorporated kellie@holesinc.com

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A Towering Success

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Lighthouse Refurbished Using Diamond Tools

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CONCRETE OPENINGS MAGAZINE Official Magazine of the Concrete Sawing & Drilling Association Volume 25, Number 2 ISSN: 1093-6483 Concrete Openings magazine is published by O’Brien International, Inc., four times each calendar year in March, June, September and December. Editorial contributions are welcomed and advertisements are encouraged. Please contact the Concrete Sawing & Drilling Association 100 2nd Avenue South Suite 402N St. Petersburg, FL 33701 Tel: 727-577-5004 Fax: 727-577-5012 WWW.CSDA.ORG Magazines, newspapers and private individuals are welcome to reproduce, in whole or part, articles published herein provided that acknowledgements are made in the following manner: “Reprinted courtesy of the Concrete Sawing & Drilling Association, Concrete Openings magazine, Issue Date.”

No alterations should be made in the text of any article.

PUBLISHER Patrick O’Brien ASSOCIATE EDITOR Russell Hitchen CONCRETE CASE CONTRIBUTORS John Barber John McMenaman Diane Serban Kellie Vazquez EDITORIAL REVIEW COMMITTEE Skip Aston Rod Newton Pat Stepenski The information and recommendations in this magazine are provided for use by fully qualified, professional personnel.

The Concrete Sawing & Drilling Association and the publisher disclaim any responsibility as to their use by readers and shall not be liable for damages arising out of the use of the foregoing information.

All bylined articles published in this magazine represent solely the individual opinions of the writers and not necessarily those of the Concrete Sawing & Drilling Association.

C O N T E N T S 10 Praxis Makes Perfect 16 2016 IACDS Annual Meeting 24 CSDA 2016 Convention & Tech Fair 28 The Business of Business

The Voices In My Head: Who is Listening to Subcontractors?

30 Safety Counts

OSHA’s Final Rule on Occupational Exposure to Respirable Crystalline Silica

38 Core Health

Sleep, Sweat and Eat Away Stress

40 Tech Talk

Extension Cords – Part I

44 Polished Perspective

Polishing the Commercial Sector

46 Industry Bits 56 Certification 58 Membership 60 Calendar 64 Director’s Dialogue

38 Cover: The DigIndy Deep Rock Tunnel Connector in Indianapolis, Indiana (photo courtesy of Robb Williamson/AECOM).

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Concrete Cases

A series of 18-inch-diameter holes were made in limestone tunnel walls.

Can You Dig It? A

Core Drilling Indy’s Deep Rock Tunnel System

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n extensive $444 million construction and improvement project is underway 250 feet below Indianapolis. A 28-mile network of 18-footdiameter deep rock tunnels is being built to improve the city’s wastewater system. As part of the project, a CSDA member was chosen to drill a series of 6-foot-deep, 18-inch-diameter holes in the walls of the tunnel system for the installation of support beams.

The DigIndy project is the largest public works project in Indianapolis history. The city’s existing century-old sewer system is unable to keep up with a growing population and has become susceptible to overflow in rainy conditions. The new system will store up to 250 million gallons of overflow, which will then slowly be released to treatment plants instead of going directly into the city’s waterways.

A pivotal part of the DigIndy project is the creation of the Deep Rock Tunnel Connector and Pump Station in Southport. For this stage of the work, an overhead crane was employed to lower the floor of the existing connector tunnel by 50 feet. However, this task could not be completed unless 12 support beams were installed in the limestone walls of the tunnel. The beams had to be directly across from each other and perfectly level to support the crane and for the work to proceed.

Renda/Southland Joint Venture was responsible for this part of the project and subcontracted CSDA member Concrete Surgeons, Inc. of Indianapolis to create the required openings to house the support beams.

“This was a very high-profile job for us,” said Diane Serban, corporate secretary for Concrete Surgeons. “Because the beams needed to be perfectly level for the overhead crane to be installed, it was clear that the 12 holes should be core drilled. This method provided Renda/Southland with the amount of precision needed and left a smooth finish for the beams to be slid horizontally into position.”

Operators from the core drilling contractor were lowered in a basket to 230 feet below grade by crane through one of the connector’s drop shafts, followed by all of their equipment. It was important to have all necessary drills, core bits and tripods, plus pipe stands for the longer bits down in the tunnel to avoid lengthy downtime in the event of any failures or breakages. “Having to be lowered so far down into the darkened tunnel was a new and intriguing experience,” remarked Tony Judkins, project supervisor for Concrete Surgeons.

To ensure that the holes lined up perfectly across the tunnel, operators used a tried-and-tested method to level the drills. “Concrete Surgeons and our customer ran a string line, making adjustments where needed, for our base to line up.” Judkins explained. The climate

Operators were to drill to a depth of 6 feet for each hole.

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Concrete Cases

continued

Work was carried out 250 feet below the surface in humid conditions.

in the tunnel was very different to that on the surface. High moisture counts meant that waterproof cord caps were used and the electrical contractor for the project installed wire restraints on the electrical cords to hold them in position during the core drilling work.

There were six holes created on opposite sides of the tunnel. Each set of six holes was positioned horizontally level between 3.5 and 4 feet from the uneven floor surface and spaced 12 feet apart. “The first task on this project consisted of drilling 0.625-inchdiameter holes 12 inches deep to epoxy all threads for our drill mounts.

The epoxy had to cure for 24 hours,� said Judkins. The core drilling team mounted the drilling rig in place with anchors, though this was Operators drilled half of the total depth before removing 3-foot-long cores.

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a challenge as the limestone surface of the tunnel wall was quite brittle. A Hilti DD500 core drill system was used to create the 18-inchdiameter holes 6 feet deep in the limestone. Operators began core drilling using a 3-foot-long bit. This portion of the work took around 45 minutes to complete.

Once half the total depth had been achieved, the bit was backed out of the cut before the core was broken out and removed. A 6-footlong core bit was then employed to complete drilling to the required depth in conjunction with a pipe stand to support the longer bit. It took an additional one hour of drilling to reach 6 feet. Each 3-foot, 18-inchdiameter core weighed around 800 pounds.

The core drilled openings were used to house steel support beams for a large crane.

All equipment, operators and cores were transported in and out of the tunnel system’s drop shaft by crane.

With the first hole complete, operators repositioned themselves and their equipment at the next drilling location and used the same method to create the next hole, and then the remaining ten, running two drills to expedite the process. The team from Concrete Surgeons spent seven days in the tunnel, working eight-hour shifts to complete all twelve holes to the required specifications and tolerances of Renda/Southland. All work was done within the set time frame and a total of 19,200 pounds of limestone was core drilled and removed from the tunnel.

Safety requirements on the DigIndy project included the provision that all on-site personnel had OSHA 10-hour training and 24 hours of Hazardous Waste Operations and Emergency Response (HAZWOPER) training. One representative from Concrete Surgeons was also required to complete the OSHA 30-hour training program. In addition, Concrete Surgeons, Inc. has previously been certified by the Metro Indianapolis Coalition for Construction Safety (MICCS) program, now known as CCS. “We are known for doing excellent quality work and have a great safety rating,” stated Serban.

All parties involved were satisfied with the outcome and the positioning of the crane went ahead without incident. This allowed the tunnel floor to be lowered 50 feet as planned. Following the success of this core drilling work, Concrete Surgeons was approached to carry out more tasks across the DigIndy system as and when needs arise. The entire DigIndy system is scheduled for completion by 2025.

COMPANY PROFILE Concrete Surgeons, Inc. is headquartered in Indianapolis, Indiana and has been a CSDA member for 18 years. The company has been in business since 1992. Concrete Surgeons, Inc. specializes in concrete slab sawing, core drilling, wall sawing, hand sawing, wire sawing, selective demolition and GPR scanning. The company is in the process of achieving Veteran Business Enterprise certification and is currently expanding its operations.

RESOURCES General Contractor: Renda/Southland Joint Venture Sawing and Drilling Contractor: Concrete Surgeons, Inc. Indianapolis, Indiana Phone: 317-897-0600 Email: dcs@concretesurgeons.com Website: www.concretesurgeons.com

METHODS USED: Core Drilling

REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM

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PRAXIS

MAKES PERFECT

Specifiers and Contractors Align Through Standards

T

he CSDA Mission remains “to promote the use of professional cutting, polishing, imaging and selective demolition contractors and their methods,” and “to provide a forum in which members can share their ideas, needs and concerns in a constructive framework to further enhance technologies, education and training.” Recently, the association has given support to a new platform that shares some common goals and aims to bring contractors together with architects, engineers and government officials.

Praxis Las Vegas was an official World of Concrete (WOC) education series that took place earlier this year, the latest in a number of similar events that have been held at industry trade shows across the U.S. Educational courses were held for architects while hands-on training and real world application took place at the same time. Now in its fourth incarnation, people in the industry are becoming familiar with these events. However, some are unsure about what Praxis means and what these programs are trying to accomplish.

Praxis is the idea of taking concepts and turning them into action, bringing ideas to life. For architects, this means the process of taking what is on a drawing, rendering or specification and

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constructing it in the real world. This is also the goal of suppliers, contractors and the owners that create demand for construction.

However, all too often the four members of the project team don't work in harmony. This results in delays, additional costs and settling for less than the original design intentions. The goal of the Praxis event series is to bring all participants of the construction world together to learn and solve these problems together.

This was the third Praxis event that CSDA has sponsored and the second event at which CSDA conducted contractor training, scheduling elements of the association’s Concrete Polishing 101 and ST-115 Certification courses at Praxis locations. The CSDA training courses were highly attended and the design community guests were impressed with the practical application. Not only that, they were pleased to have the opportunity to ask questions of the contractors present and find answers to some of their specification problems.

President Kevin Baron and Executive Director Pat O'Brien had the opportunity to meet with leaders from the specification and insurance side of the industry to share ideas on increasing the construction industry's ability to plan for and adapt to create a more sustainable construction systems. The association’s participation

in events like Praxis are core to its commitment to educate professionals within the contractor community through coordinated and continuous learning. The CSDA Training Program has always worked with proven best practices, utilizing the latest technologies and materials to create more resilient construction outcomes.

Other participating CSDA members in Praxis events include Diamond Products, Superabrasives Inc. and Select Concrete Solutions (SCS). Diamond Products conducted training on proper joint cutting and Superabraisve worked with CSDA instructor Chris Swanson for the Concrete Polishing 101 course. SCS trained students on placing, finishing and refining hydrophobic concrete systems.

The event was facilitated by another CSDA member, Tao Group.

Tao Group is an independent consulting firm in the architectural and construction industries. The group has a set itself a mission to bridge the gap between concept idea and concrete reality by bringing all members of the construction team together to implement a truly integrated design delivery.

"We were fortunate to share the stage with some of the best and brightest in the construction industry, creating dialog between the groups that create construction documents and those that turn ideas into reality," said Tao Group's Chris Bennett. "It was an honor to work with sponsors, guest-speakers and Praxis attendees in raising the bar."

Through participation in Praxis events, CSDA has also forged a new relationship with the Construction Specifications Institute (CSI) and will be working with this organization more in the future, starting with a two-day concrete symposium at a CSI event in Portland, Oregon in August. The event will bring together subcontractors, architects, specifiers and flooring subcontractors to improve project outcome.

CSDA will once again sponsor a Praxis program later in the year during Construct, an event dedicated to those who design, build, specify, engineer, renovate or operate in the built environment.

Construct is scheduled for September 7-9, 2016 in Austin, Texas.

For more information, visit www.constructshow.com.

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By working with the specifier community through Praxis events and providing an understanding of contractor capabilities, CSDA can continue its mission and create greater synchronization between these two groups for the benefit of all.

CSDA-ST-115 Measuring Concrete Micro Surface Texture This is the first CSDA standard for measuring concrete surfaces and their surface texture value—a game-changer for the polishing and surface preparation industry that is drawing increased attention from the specifier community.

The approach is to measure and analyze the surface texture in order to understand how the texture is influenced by the finishing process, and how the surface texture influences its behavior with regard to gloss, friction and sustainability. The vision for this standard is to obtain a quantitative measure of concrete surface profile by contact instruments.

The 5-hour CSDA-ST-115 Certification class: •

Provides instruction on how to correctly measure concrete micro surface texture

•

Discusses the importance of surface preparation

•

Talks about proper tool selection to mitigate damage

•

Issues a certificate upon completion of the class

For more information about the Standard, upcoming classes or to download a free copy, visit www.csda.org/st115.

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Concrete Cases

READ ALL ABOUT IT! Concrete Cutter Makes Headlines During Newspaper Office Renovation

THE HOUSTON CHRONICLE— Houston’s largest daily newspaper— realized it was underutilizing two of its prominent buildings and announced that employees from the publication’s downtown location would be moving to its larger campus approximately seven miles away in the southwest part of the city. This move placed more of the newspaper’s operations closer to two of Houston’s busiest freeways—Highway 59 and Interstate 610. A professional sawing and drilling contractor was brought in to help transform the building and complete this major renovation project.

Holes Incorporated, a CSDA member from Houston, was hired by general contractor JM Design Build of Broadview Heights, Ohio, to perform both concrete wall sawing and core drilling techniques as part of the renovation project and create a more green and open environment for Chronicle employees. Holes was tasked with making eight 11-­foot-tall by 8-­foot-­wide window openings on the west side tower of the building. A series of conference rooms was planned for the spaces behind the west side tower, therefore the inclusion of two openings per floor would provide each conference room with natural light and a view of the Houston skyline.

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A series of 10-inch-diameter holes were core drilled for relief sections rigging access.

Operators created and removed 8-foot-wide, 10-inch-tall relief pieces first.

Holes Vice President Kellie Vazquez said the job scope changed from when the company first bid the job to when the work was done.

“Initially we were to cut vertical panels into the building for removal, but due to a design change the panels were turned into eight openings,” Vazquez said. “This change benefitted our scope because the creation of the eight openings provided a safer method of removal from the original plan.”

The cutting contractor performs daily on-the-job training during projects and this job was no different. Safety site supervisor and trainer Nolan O’Neil, a CSDA Certified Operator, oversaw operations and assisted wall saw operator Derrick Sarte and trainee Kenny Mangum on the job.

“As someone who is new to the industry, it was truly an eye-opening experience to witness the level of skill and workmanship that goes into this line of work,” Mangum said. “The willingness of one experienced Holes operator to pass on his knowledge to someone who had zero prior experience of wall sawing techniques helped me a great deal.”

Houston Chronicle Hearst Corporation purchased the Houston Chronicle from Houston As of April 2016, the Houston Chronicle is the third-largest Endowment for $415 Million. Richard J. V. Johnson, who had joined the newspaper by Sunday circulation in the United States. The paper paper as a copy editor in 1956 and worked all the way up to president employs nearly 2,000 people, including approximately 300 journalists, of the publication in 1973, remained as chairman and publisher until he editors and photographers. Its website averages more than 120 retired April 1, 2002. million page views per month.

The Chronicle was founded A rendering of the completed Houston Chronicle building renovation. in 1901 by a former reporter for the now-defunct Houston Post, Marcellus E. Foster. The Chronicle’s first edition was published on October 14, 1901 and sold for two cents per copy, at a time when most papers sold for five cents each. At the end of its first month in operation, the Chronicle had a circulation of 4,378 — roughly one tenth of the population of Houston at the time. In 1987, the

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Concrete Cases

continued

The change to the scope of work occurred on the first day of the job, so the team from Holes devised a solid plan to safely cut and remove the openings.

A project Job Safety Analysis form was created, which was followed and updated daily as the work progressed.

Due to its prominent location at the front of the Houston Chronicle building, the cutting contractor had a zero tolerance for error. Therefore, it was decided each concrete opening would be cut in two parts to successfully and safely remove the sections of concrete and leave the desired finish for the general contractor.

“We understood that windows were going to be placed in these openings so they had to be perfect,” Vazquez said. “In addition to the design change from vertical panels to eight openings, the inclusion of relief cut pieces was also a scope change. We discussed the option with the general contractor and approved pricing for the extra 64 feet of sawing. My operator and site safety supervisor decided it was the safest way to remove the openings and the surest way to avoid the concrete spalling around them.”

The team started by drilling two 6-­inch-diameter cores into each specified window location for rigging holes, which would be utilized during the removal process. Two additional rigging holes were drilled into the top of each opening and used to help create a series of 8-foot-wide, 10-inch-tall relief pieces.

Next, the wall saw operator cut three sides of each opening, leaving the cuts on the right side of the concrete sections for last. Due to the height of the openings, and in preparedness for any inclement weather during the project, the right hand cut was left until crane rigging was attached to the cut concrete section to prepare for removal.

With three sides cut, the operator proceeded to make a relief cut 10 inches below the top cut to form the relief section in each window location. The cuts for the 8-foot-wide relief pieces were made around the previously-drilled 10-inch-diameter openings in each

As each of the final eight 10-foot vertical cuts were completed, a 8-foot-wide, 12-inch-thick section was removed by crane.

The window openings were completed on time and within budget.

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end. Smaller holes measuring 2 inches in diameter were created in the relief sections to attach crane rigging before each piece was removed. By removing the top 10 inches of each opening, the team from Holes was able to remove the remaining concrete sections with greater ease.

Once all the relief pieces were cut and craned out, rigging was attached to the larger 8-foot-wide, 10-foot-tall cut section to make the final right hand cut with the wall saw. After several passes, the last vertical cut was complete. The operator removed the sawing equipment and track from the wall so that the removal process could commence.

As each piece was removed, a piece of plywood was securely positioned across the interior of each opening to prevent falls.

This process was repeated seven more times until all the cut concrete sections were safely on the ground. Each piece weighed 13,200 pounds.

Holes Incorporated completed 368 feet of wall sawing and core drilled 46 holes two-­, six- and 10-­inches in diameter through the 12-inch-thick concrete walls of the Houston Chronicle building.

“Overall, the job was a success,” Vazquez said. “We encountered no issues removing the cut pieces and the customer and owner were extremely satisfied.”

Today, the renovated building is home to the entire Houston Chronicle production department and the Spanish newspaper La Voz de Houston. By successfully completing the window opening tasks, Holes Incorporated was awarded additional jobs during the building’s renovation.

Vazquez states the job would have been more difficult to complete without the commitment and hard work shown by operator Sarte—a hard-working team member who takes pride in his accomplishments.

“I was quite happy with myself because I knew this was a big job with many obstacles,” Sarte commented. “Everything went better than we anticipated. I really enjoy going by the Houston Chronicle building and looking at the results of our work.”

COMPANY PROFILE Holes Incorporated, based in Houston, Texas, has been in business since 1972 and a CSDA member company for 40 years. The company specializes in concrete wall sawing, slab sawing, core drilling, wire sawing, scanning, breaking, anchor bolt installation, demolition and load and haul. Holes Incorporated performs commercial, industrial, residential, state highway and municipality work. Holes is a CSDA Certified Company and employs CSDA Certified Operators.

RESOURCES General Contractor: JM Design Build Sawing and Drilling Contractor: Holes Incorporated Houston, Texas Phone: 281-­469­-7070 Email: kellie@holesinc.com Website: www.holesinc.com

METHODS USED: Wall Sawing, Core Drilling

REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM

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2016 IACDS Annual Meeting International Association Moves Forward with New Purpose The 2016 Annual Meeting of the International Association of Concrete Drillers and Sawers (IACDS) was held April 16-17, in Munich, Germany.

Over 25 delegates from France, Germany, Japan, Liechtenstein, Spain, Sweden, Switzerland, the United Kingdom and the United States were in attendance, all with the common aim of promoting the concrete sawing and drilling industry.

The meeting began with a networking activity at the booth of the German sawing and drilling association, Fachverband Betonbohren und -sägen Deutchland e.V., during the Bauma 2016 trade show. It was here that the president of the German association, Thomas Springer, was presented with a commemorative plate by current IACDS President Julie White. The plate recognized the work of IACDS and German Fachverband past president Otto Alte-Teigeler of Germany, who passed away recently.

The following day, delegates gathered for the association’s Annual Meeting, which included opening remarks from White, a series of informative presentations and an insightful roundtable. Martin Goedickemeier of Hilti, Inc., gave a presentation on Temporary Fixation of Diamond Cutting and Coring Equipment—Recommendations and Load Considerations During Operation based on mounting and anchoring best practices. Another presentation titled Understanding the Business Models of the Industry was given by Donat Fritsch of the NESTAG company.

In addition, an open roundtable took place that gave the delegates the chance to raise a number of important issues and learn from the successes and failures of peers from around the world.

Diamond Award Another highlight of the IACDS Annual Meeting was the Diamond Award 2016 ceremony. First held in 2004, the Diamond Award is an internationally recognized competition devised to demonstrate the professionalism of concrete cutters and improve their visibility around the world.

Swiss company Diamantbohr Group was presented with the top Diamond Award for its work on the Pendulum Drilling for Monitoring the Emosson Dam project. The contractor was instructed to drill holes to a depth of 28 meters (91.9 feet) with a 160-millimeter (6.3-inch) diameter in the dam. The specified tolerance was less than 2 centimeters (0.8 inch) in the X and Y axes. Based on the specified drilling depth, this is equivalent to a deviation of less than 1 millimeter (0.04 inch) per meter of the hole. A chrome steel pipe was then cast into the hole and was used to house a measuring device.

Other projects presented with Diamond Awards were Demolition of Ro-Ro Ramp at Mahon’s Harbor by Spanish company Thayr Demolicion Tecnicas SL and Cutting of Bored Piles Ø 1300mm, 15m Under the Water Level by Diatec Betonspezialabbruch of Germany.

Thayr was tasked with making holes Ø 150 millimeters (6 inches) in diameter through a 400-millimeter-thick (15.8-inch) slab on a concrete pier before slab sawing 4 by 4-meter (13.1 by 13.1-meter) square

Back Row (from left to right): Patrick O’Brien, Frank David, Anders Andersson, Lars Sandstrom, Peter White, Julie White (President), Phillippe Wingeier (Vice President), Joel Vinsant , Martin Goedickemeier, Martin Braun, Alfred Landl, Colin Walker, Sebastian Häfele.

Front Row: Akinori Shibuya, Norikazu Shibuya (Vice President), Jose Blanco (Secretary), Donat Fritsch, Reiner Schulze.

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sections of the slab for removal. The second phase involved the cutting of bracings and pier caps with a wire saw before two cuts were made on each pile underwater, one at 7 meters (23 feet) below the surface and the other at 15 meters (49.2 feet) below.

Diatec was tasked with drilling 139 piles Ø = 1,300 millimeters (51.2 inches) deep in an open excavation pit measuring 160 meters (524.9 feet) long, 20 meters (65.6 feet) wide and 15 meters (49.2 feet) deep in groundwater. The piles had to pass an integrity test, as specified by the client. In order to perform the test, all piles had to be cut. A custom wire sawing setup was fabricated to cut each pile down until a sound sustainable concrete level was recorded by the testing equipment. On completion of the cutting work, the pile heads were lifted from the excavation pit by crane and labeled to match with the corresponding pile head.

To see photos and read more about the Diamond Award 2016 winners, visit www.iacds.org/diamondaward.

White, now in the second year of her two-year term as IACDS President, continues to be supported by Vice-Presidents Norikazu Shibuya of Japan and Phillippe Wingeier of Switzerland. Past President Jose Blanco of Spain remains as IACDS Secretary. The 2017 IACDS Annual Meeting will be held in Vienna, Austria. For more information about IACDS, or to download any of the technical documents produced by the association, visit www.iacds.org.

Diamond Award winners Fabian Alcudia (Thayr SL), Phillippe Wingeier The International Association of Concrete Drillers & Sawers is an (Diamantbohr Group) and Mr. Diffenhard (Diatec) with IACDS President Julie White. international trade association of sawing and drilling associations from reduced downtime, precision cutting, maintenance of structural the concrete construction and renovation industry. Its mission is to integrity, reduced noise, dust and debris, limited-access cutting and provide an international union and cooperation of trade associations the ability to cut heavily-reinforced concrete. This umbrella organization to support and promote professional development of professional of sawing and drilling associations formed in 1995 is composed sawing and drilling contractors and their methods. Concrete cutting of the associations from France, Germany, Japan, Spain, Sweden, with diamond tools offers the industry many benefits, including Switzerland, the United Kingdom and the United States.

IACDS President’s Insight I would like to thank Concrete Openings and CSDA for giving me this chance to write a regular column and provide my thoughts as the current IACDS President. A great deal of work has been going on behind the scenes in recent months to really make the international association more relevant to its members and the industry.

Progress has involved lots of video conferencing, as the organization has representatives in in places like Japan, Spain, Sweden, Switzerland and the U.K.—at times it feels like the United Nations of diamond drillers and concrete sawers!

One of my aims as IACDS President, along with others, is to ensure the association brings added value to the industry and that we are all clear with what we want IACDS to achieve. Furthermore, we have to be in agreement about how we achieve it.

I am extremely passionate about how important our specialist sector is to the construction industry—and the economy as a whole. I want to highlight that concrete sawing and drilling companies bring not just sophisticated equipment to the table, but great expertise as well.

As drillers and sawers we are, very often, involved right from the planning stage of a project. We can offer advice on how jobs can be undertaken based on years of experience, then execute the plan with great skill and professionalism.

It is this type of service that brings value to the client and makes us more than equipment operatives and, as the IACDS, we want our members to remind themselves and their clients of this no matter where they are in the world.

Please email me at juliewhite@d-drill.co.uk with any questions or visit www.iacds.org for more information about IACDS. Watch this space, as things are happening and more news will follow in the coming months.

Julie White IACDS President

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Concrete Cases

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Large-Diameter Core Drilling Creates Path for NYC Water Siphon

New York City’s Department of Environmental Protection (NYCDEP) has constructed a 72-inch-diameter water siphon to replace two existing, subaqueous water siphons located beneath Upper New York Bay between Bay Ridge, Brooklyn and Tompkinsville, Staten Island. The new $250 million siphon, now complete, provides five million gallons of water per day to these areas. However, a 48-inchthick reinforced concrete slurry wall stood in the way of the new construction and a path through it had to be created.

An angled 79-inch-diameter opening was required 25 feet below ground in Bay Ridge, New York.

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Concrete Cases

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New York City currently maintains two existing siphons, which provide a secondary/back-up water supply for City Water Tunnel No. 2, the main water supply for Staten Island. The U.S. Army Corps of Engineers (USACE)/Port Authority of New York & New Jersey (PANYNJ), as part of their New York and New Jersey Harbor Deepening Project, are dredging this channel to a depth of approximately 54 feet below mean low water (MLW). The existing siphons are situated at a depth that could be compromised by the dredging in the channel.

The new 72-inch siphon replaces two existing siphons and provides the necessary back-up water supply from Brooklyn to Staten Island.

In emergency situations, it has the capacity to supply an average of 50 million gallons of water per day, maintaining a redundant and reliable supply of water to Staten Island. The project also involved the

construction of shafts on both the Brooklyn and Staten Island sides of the harbor along with water transmission mains and other related infrastructure improvements. This provided connections to the existing water supply systems and to a chlorine station adjacent to the Staten Island shaft.

In January 2016, construction of the new siphon system approached the Bay Ridge concrete slurry wall at Front Staten Island and Shore Road at 83rd Street in Brooklyn. General contractor Judlau OHL Contracting of College Point, New York, employed the services of CSDA member J.P. Hogan Coring & Sawing Corp. of Staten Island to breach the wall so that the 72-inch-diameter supply line to the Brooklyn shaft side of the siphon could be attached. The shaft was already completed and a cap installed prior to the cutting contractor arriving at the jobsite.

The contractor was tasked with core drilling through a 48-inch-thick reinforced concrete slurry wall.

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Concrete Cases

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The proximity of the finished shaft to the marked area for penetration prevented the use of any percussion equipment, as high vibration could have compromised the integrity of the shaft and slurry wall. That, and the fact that the work area was 25 feet below ground.

The general contractor specified that a smooth, perfectly round hole was required to facilitate a specific link seal for the new water line, so J.P. Hogan planned to create a 79-inch-diameter core hole through the 48-inch-thick wall. The use of a diamond core bit with core drilling equipment would achieve the desired result while creating less noise, vibration and debris than other traditional demolition methods.

Prior to starting work on the slurry wall, the core drilling contractor had to find a manufacturer that could produce a custom 79-inchdiameter, 5-foot-long bit. CSDA member Husqvarna Construction Products was selected because of the company’s expertise in fabricating large-diameter core bits and the contractor having confidence in the quality of the finished product. A hydraulic 45.6 cubic inch core drill motor from fellow member Diamond Products was selected to power the bit and the company also supplied a M6 rig.

“When bits of this diameter are used to drill horizontal holes, they have a tendency to partially collapse on the open end,” explained Bernadette Hogan, president of J.P. Hogan. “So we mounted an internal truss to prevent the bit from falling out of round.”

The core drilling team mobilized and transported all tools and equipment to the work area—a 15-foot-long, 25-foot-wide excavated

opening that was 25 feet deep. Equipment was lowered down into the work area by crane and ladders securely positioned for operator access.

The drill rig was mounted to the heavily-reinforced concrete slurry wall and on the opposite side of it was the capped connection point. J.P. Hogan operators, positioned on a 5-foot work platform, were about to set up the drill motor and bit, when site engineers discovered the hole could not be drilled through the wall straight on. Using a laser device, the correct drilling angle was determined to be a 15-degree compound angle and the operators made the necessary adjustments.

As the contractor was now performing angled core drilling with a 79-inch-diameter bit, additional care had to be taken to maintain accuracy and not damage the bit. Drilling began with only a portion of the bit’s total circumference making contact with the concrete. In order to prevent the bit from traveling or chattering, J.P. Hogan mounted Teflonlined steel guides. These guides proved critical to getting the diamond bit engaged in the concrete.

Another consideration was how deep to penetrate the wall, as there was concern that the large core would break free prematurely and destroy the bit. The contractor planned to drill through the last mat of steel rebar in the wall, leaving approximately 10 inches of concrete to support the core while the bit was removed.

Drilling got underway and the operator controlled coring speed at 41 RPM, adjusting as necessary when the bit encountered any steel reinforcement. Work was completed over eight man days, when the

On the opposite side of the slurry wall was the connection point for the new siphon system.

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Drilling stopped 10 inches short of the total wall thickness so the bit could be removed safely.

team from J.P. Hogan reached the specified core drilling depth. This duration included some delays due to New York winter weather that averaged low temperatures between 25 and 30 degrees Farenheit.

The contractor’s plan to core drill through the last matt of rebar then leave the core in place worked. The last 10 inches of concrete supported the weight of the 79-inch-diameter core while the core bit was removed. Once the core drilling team had demobilized and exited the work area, the general contractor tapped the core with a back hoe and the concrete broke free. The 48-inch-long core was extracted by crane and weighed 23,000 pounds.

“J.P. Hogan did a great job coring the required 79-inchdiameter hole. This allowed the timely installation of the 72-inch inside diameter pipe and kept our work on schedule,” said Vladimir Gotman, project manager for Judlau OHL Contracting.

With help from this professional concrete sawing and drilling contractor, Judlau OHL Contracting completed its work for the NYCDEP and the new water siphon is now operational. The concrete slurry wall job is a great example of how large-diameter core drilling can be a cost effective, faster and safer alternative than some other demolition techniques. Where there’s a (core) drill, there’s a way.

COMPANY PROFILE J.P. Hogan Coring & Sawing Corp. is a full service concrete cutting company located in Staten Island, New York. The company first joined CSDA in 2006 and has been in business for over 20 years. J.P. Hogan has 36 employees, over 20 trucks and is a WBE/DBE certified contractor. The company offers the concrete cutting services of core drilling, slab sawing, wall sawing, hand sawing, wire sawing and selective demolition.

RESOURCES General Contractor: Judlau OHL Contracting Sawing and Drilling Contractor: J.P. Hogan Coring & Sawing, Inc. Staten Island, New York Phone: 718-761-7014 Email: jmack@888jphogan.com Website: www.888jphogan.com

METHODS USED: Core Drilling

REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM

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First-Time Attendees Up 36%

An enthusiastic crowd of industry professionals, including an impressive number of first-time attendees, gathered in Palm Desert, California to hear recordsetting aviator Dick Rutan deliver his inspirational keynote at CSDA’s 2016 Convention & Tech Fair.

T

he association’s flagship event, held March 10-12 at the beautiful JW Marriott Desert Springs Resort, experienced a 36% increase in first-time convention attendees over the 2015 event.

This year’s convention program boasted 18 industry-specific sessions in addition to Rutan’s Around and Out of This World keynote presentation. Dick’s thrilling account of his nine-day non-stop, around-the-world flight in the Voyager aircraft kept attendees on the edge of their seats and emphasized the power of dreams, dedication, desire and determination.

“I thought Dick Rutan was a great choice. What a wonderful story with very real implications to our lives every day. Not only having the chance to meet a man like Mr. Rutan in real life, but truly get to understand his mindset and sense of purpose, was amazing,” said first-time attendee Tommy Clay of Ardor Solutions, LLC in Oklahoma City, Oklahoma.

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CSDA Executive Director Patrick O’Brien with convention keynote speaker Dick Rutan.

Other highly-valuable business sessions at the CSDA Convention covered a wide range of topics, including concrete slurry and dust control, dispatching procedures, roughness average in the polishing industry, utilization of social media and cooperation between concrete cutters and GPR contractors. New for 2016, the convention program also featured a series of quick-fire manufacturer presentations that gave representatives the chance to showcase their products and services to convention attendees.

This new format proved popular and will appear on the 2017 CSDA Convention schedule.

Aside from all the business sessions, networking opportunities and social events available in Palm Desert, the ever-popular CSDA Tech Fair was again part of the convention agenda. Around 20 leading industry manufacturers and affiliates exhibited at the event, drawing a great crowd. Attendees took the opportunity to talk one-on-one with vendors in an intimate setting that often cannot be achieved at large trade shows. “The Tech Fair is an excellent event. As always, I learned a lot and made some great networking connections as I walked the floor,� said Richard Steltzer of Merlin Steltzer Services, Inc. in St. Louis, Missouri.

Convention attendees Jamey and Julia Johnston of M6 Concrete Cutting & Coring in Wichita, Kansas.

From left to right: Susan Hollingsworth, Jonathan Kimball, Kellie Vazquez, Matthew and Sally Finnigan, Kelly and Greg Lipscomb.

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continued

Also in Palm Desert, CSDA announced its 2016 Board of Directors. Six Board members, whose terms expire in 2018, were elected. They are Peter Bigwood, Brokk, Inc., Monroe, Washington; Scott Brown, ICS Blount, Inc., Portland, Oregon; Matthew Dragon, GPRS, Inc., Toledo, Ohio; Bennett Jones, Advanced Concrete Sawing, Inc., St. Paul, Minnesota; Kevin Schmitt, Husqvarna Construction Products, Olathe, Kansas and Kellie Vazquez, Holes Incorporated, Houston, Texas.

Continuing their roles as CSDA Officers are President Kevin Baron, Western Saw, Oxnard, California; Vice President Jack Sondergard, Central Concrete Cutting, Inc., Edgar, Wisconsin; Secretary/Treasurer Mike Orzechowski, DITEQ Corporation, Lenexa, Kansas; Past President Judith O’Day, Terra Diamond Industrial, Salt Lake City, Utah and Executive Director Patrick O’Brien, St. Petersburg, Florida.

Returning for the second year of their term are Board members Tim Beckman, Cutting Edge Services Corp., Batavia, Ohio; Matthew Finnigan, National Concrete Cutting Inc., Milton, Washington; Dan Foley, Cobra Concrete Cutting Services Co., Arlington Heights, Illinois; Greg Lipscomb, Diamond Products Limited, Elyria, Ohio; Mike Nelson, K2 Diamond, Torrance, California and Doug Walker, Douglas H. Walker, Mount Holly, New Jersey.

CSDA 2016 Board and Committee Meetings The remainder of the CSDA 2016 Board and committee meetings schedule is as follows: September 8-9 Sheraton Boston Hotel, Boston, Massachusetts December 1-2

Laguna Cliffs Marriott Resort, Dana Point, California

CSDA has a consistent open meeting policy and these meetings are open to all members as well as any prospective members. Local members and prospects are especially welcome to attend.

In 2017, the CSDA Convention & Tech Fair will be held outside the continental U.S. as the association travels to Puerto Rico. More details on this, and other events from CSDA, can be found at www.csda.org or by calling the CSDA office at 727-577-5004.

Back row (from left to right): Mike Orzechowski, Patrick O’Brien, Doug Walker, Greg Lipscomb, Tim Beckman, Peter Bigwood, Kevin Baron, Matthew Finnigan.

Front Row: Bennett Jones, Scott Brown, Dan Foley, Judith O’Day, Kellie Vazquez, Jack Sondergard, Kevin Schmitt, Mike Nelson.

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The Business of Business

The Voices In My Head: Who is Listening to Subcontractors?

By Cherise Lakeside

E

arlier this year, for the first time, I attended World of Concrete in Las Vegas. I was invited by the Tao Group for their CSDAsponsored Praxis event to do a presentation on “Specifications 101” for anyone who cared to attend. Tao Group is passionate about maintaining design intent and providing the best possible outcome for the Owner.

I was thrilled to be asked to share some contract document education with folks who traditionally do not get exposure to it.

Like anyone in our industry, I have areas where I am particularly passionate.

One of those areas is better interaction and education for our emerging professionals.

Another, and the subject of this article, is improving communication, coordination and collaboration on our projects. I will take any opportunity that I can get to share this education across disciplines. I am especially grateful now that I had this opportunity at World of Concrete.

I would venture to guess that I get out of my specifier cave a little more than some due to my rather aggressive involvement in Construction Specifications Institute (CSI) and ever increasing speaking engagements.

This gives me the chance to talk to folks from a lot of disciplines which is invaluable.

What I have now learned is that I need to get my hands dirty.

Like a lot of people who work strictly as a specifier, I don’t have many opportunities to get out on jobsites and talk to the people who are actually doing the work. There has been very little opportunity to get feedback from the people who are using and interpreting the specifications I write.

There has been almost no chance to see, first hand, how it all comes together. How it actually gets built. This has been a critical mistake and I have made a change.

I have done the Specifications 101 class a number of times. It is geared to provide some very general knowledge of specifications, contract documents, roles and responsibilities and risk. You can only

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cover so much in 1.5 hours so I try to lightly hit a lot of pertinent areas to hopefully spark my attendees to ask more questions and get further education in contract documents and project delivery.

I have presented this class to architects, contractors, engineers, product reps and manufacturers – in and outside of CSI. Not once has anyone told me that the information was not helpful. The attendees always walk away with some homework they intend to do because I said something they didn’t know or didn’t understand.

At World of Concrete, my audience was approximately 50 concrete subcontractors.

With the exception of a scattering of subs among my other presentations, I don’t typically see this group at meetings or in my presentations. I was thrilled to have a chance to talk with them. I was thrilled not only because I want to know what I don’t know, but I also had a chance to clear up misconceptions about specifications. I wanted to learn how it really goes down once those documents leave my hands.

• •

•

I started with a couple of questions: How many of you read the concrete specs? Two hands went up.

How many of you read the finishings, specifically floor coverings, specs to know what is going on top of your slab when you are finished? One hand went up.

How the hell do you know what to build?

The answer “We look at the drawings, do

•

what the general contractor says and build what we know. We are the craftsman here.”

Why don’t you read the specs? Answer “They are never right and have conflicting requirements that can’t be built or shouldn’t be built in that particular application.”

I also heard some very interesting stories about some of the challenges that subcontractors face on the jobsite when they find things that are wrong or can be done better. Damn if I hadn’t just received a 2x4 smack in the head. How have I been missing this knowledgeable and valuable group in my CSI adventures! How have I not been getting this crucial feedback so that I can do a better job?

•

•

•

I also shared a few things with them: Not every specification that they receive is written by a trained specification writer.

Many specifications come from designers with no contract document education.

Specification writing is much more than just putting the products in the document and they needed to understand how to spot potential conflicts.

The Drawings AND the specifications are the contract. You are legally bound to them, whether you read them or not. If you provide something different, you may end up paying for it.

There is a lot to a specification. You need to read ALL of the administrative requirements and the specifications for the other products that are going to touch your work (most importantly floor coverings).

•

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There are specified processes to fix the things that are wrong in the specifications so you don’t take on additional risk. Understanding those and knowing where to find them is key to protecting yourself and the project.

There seems to be ‘problem children’ on projects. Those areas of the project that continually have coordination issues.

Roofing is one of them. The building envelope is another. Hands down, concrete, concrete moisture and the later installation of floor coverings is at the top of the list.

It drives me insane when I see a continuing problem that doesn’t get fixed.

What drives you crazy at work? That question always results in the areas we need to improve. This is one of those areas and change starts with me.

There is no way that I am taking on concrete issues in construction in this article. I don’t even pretend to be knowledgeable enough to do that. I will tell you, however, what I am going to do: • I am going to get out on the jobsite more, talk to the folks doing the work and find out where my documents are falling down. I am going to learn what I need to learn.

• I am going to actively and aggressively pursue the subcontractors to get involved in the creation of specifications and bring this feedback to the table for all of the other disciplines. They are a voice that is not being heard.

• I am going to look for opportunities to speak to, work with and learn from the trades. They know better than anyone when it comes to what works and what doesn’t. Knowledge exchange is crucial.

• I am going to look for opportunities to bring multiple trades whose work affects each other into the same room to find better ways of collaboration and increase understanding of each other and the work they are asked to do.

• I am going to ask quality tradesmen to teach me.

• I am going to bring the subcontractors into the conversation.

We cannot promote positive, forward moving change if we don’t step out of our comfortable little cave and do something different. It has to start somewhere and it always starts with shared knowledge.

World of Concrete was an amazing experience that I didn’t see coming. I thank all of the subcontractors and tradesmen

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who took the time to share with me, show me things and let me play with the big toys. I have the utmost respect for the work that they do. I definitely hope to have the opportunity to attend next year and really get my hands dirty. I encourage anyone to go outside your industry and learn from others in the process.

Be the change you wish to see in this world!

Cherise Lakeside is an industry specifier for Ankrom Moisan Architects based in Portland, Oregon, with over 30 years of experience. She has worked extensively in multiple areas of the industry including specification writing, contract administration, marketing, business management and quality assurance. Lakeside can be reached at cherises@ankrommosian. com or via Twitter at handle @CheriseLakeside.

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Safety Counts

OSHA’s Final Rule on Occupational Exposure to Respirable Crystalline Silica

By Kellie Vazquez

O

n March 24th, 2016, the Occupational Safety & Health Administration (OSHA) released a 1,772-page Final Rule on respirable crystalline silica. The Final Fule is written as two standards, one for industry and maritime and one for construction.

Employers under industry and maritime have until June 23rd, 2018 to comply while employers under construction have only until June 23rd, 2017 to comply.

Silica is the second-most common mineral found in Earth’s crust. Crystalline silica is a common mineral found in many naturally-occurring materials and used in many industrial products and construction sites. Materials like sand, concrete, stone and mortar contain crystalline silica.

Respirable crystalline silica is generated by operations like cutting, sawing, grinding, drilling and breaking concrete, rock, brick and block. Exactly what many of us contractors do every day.

When any of the above operations are performed without administrative and engineering controls, the hazard of respirable silica exists for workers.

Silicosis is a disease of the lungs caused by the chronic inhalation of silica dust. There are three types of silicosis: chronic, accelerated and acute. Chronic silicosis, the most common form of the disease, usually develops after 10 or more years of exposure to relatively low dust concentrations. Accelerated silicosis results from exposure to high concentrations of silica over a 5- to 10-year period. Acute silicosis is a rare but highly fatal disease caused by brief but massive exposure to dust with high quartz content.

OSHA states that this rule is necessary because the current permissible exposure limit (PEL) for silica is outdated, inconsistent and not adequate to protect worker’s health.

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This statement has been made even though the mortality rate has dropped by 93% between 1968 and 2002 according to the Centers for Disease Control and Prevention (Bang KM, Mazurek JM. Silicosis mortality, prevention, and control—United States, 1968–2002. MMWR: Morbidity and Mortality Weekly Report. 2005;54 (16):401–5. [PubMed]).

How can it be determined that current deaths from silicosis are not from over exposure to crystalline silica at the current PEL? OSHA has not enforced the current PEL and has not proven that the current PEL is not protective.

CSDA has been part of a construction industry-wide group called the Construction Industry Safety Coalition (CISC), which is made up of 25 different trade associations. As part of this group, the focus for CSDA was to assist OSHA with coming up with a rule that is workable in construction through testimony and through submitting hundreds of pages of comment. From the beginning, the CISC and CSDA has stated that the new rule proposed by OSHA was both technologically and economically infeasible. While time is still being taken to fully digest the Final Rule, at first glance it seems to follow suit from what was initially proposed.

PROVISIONS OF THE FINAL RULE OSHA clearly states that employers must use engineering controls and work practices as the primary way to keep exposures at or below the PEL. Respirators shall only be worn when engineering and work practice controls cannot maintain exposures at or below the PEL. Engineering controls include the use of water or local exhaust ventilation such as vacuums to keep silica dust out of the air.

Work practices are suggested such as wetting down an area before sweeping silica dust, or using the water flow rate recommended by the manufacturer for a tool with water controls. These are methods that can be utilized across the industry.

The Final Rule contains a table that has an assortment of operations that generate respirable crystalline silica (see Table 1). A few operations related to concrete cutting exist in this table, including hand sawing and slab sawing. Providing these tasks are performed with the specified engineering controls, work practices and respiratory protection the employer does not need to perform air monitoring. If a task outside of Table 1 is performed, then the employer is required to perform air monitoring on each shift, for each job, for each work classification in each work area. Some might define this as continuous monitoring.

In the concrete cutting industry, having to monitor several locations per day could be quite costly with no real time information directed back to the operator.

The PEL has been reduced from 100 to 50 micrograms per cubic meter of air as an 8-hour time weighted average, with an action level of 25 micrograms per cubic meter of air as an 8-hour time weighted average under any foreseeable condition.

The final PEL, even though recommended

by NIOSH, has caused great concern for many in the industry simply because it is beyond the capacities of existing dust filtration and removal technology.

Other provisions to be aware of, which are required by all construction employers covered under this standard, are written exposure control plans, competent person designation, housekeeping practices and the requirement of medical examinations.

Competent persons are required to make frequent and regular inspections of jobsites, materials and equipment to implement written exposure control plans to mitigate silica exposure. This provision will be very costly due to an increase in personnel. Due to the diverse situations many contractors in the industry work, one plan per year will not suffice. This provision

will require concrete cutters to have a written exposure plan per site.

A medical surveillance program will be necessary for those employees who are required to don respirators for more than 30 or more days per year. This program will require a chest x-ray every three years interpreted and classified by a NIOSHcertified B-Reader.

The Final Rule can be found at www.osha.gov/silica.

OSHA’s Final Rule on Occupational Exposure to Respirable Crystalline Silica will impact the entire construction industry. CSDA and many of its members are concerned that this rule may not adequately address issues important to them or consider several real world applications. The CISC estimates this new rule will cost the construction industry over $5.5 billion annually, therefore members of the CISC plan on challenging the Final Rule through the Appellate Court system.

It is recommend you visit the OSHA website, find out how this rule will affect your business and contact CSDA to find out how you can help. Now is the time to be a member of CSDA, because this Final Rule will affect your business, your employees and your bottom line if it remains unchallenged.

Kellie Vazquez is the Vice President of Holes Incorporated, a CSDA contractor member based in Houston, Texas. She currently serves on the association’s Board of Directors, is chair of the CSDA Next Generation Committee and is involved with a number of other committees.

Kellie also acts as CSDA’s representative in the CISC and has done so for the past three years, attending meetings and testifying on behalf of the association during hearings on the silica rule at the Department of Labor in WashingtonD.C. She can be reached at 888-469-7070 or kellie@holesinc.com.

CSDA provides a number of safety resources to protect industry professionals. The association has

developed a Silica Data Analysis Chart (CSDA-BP-016) to help operators determine when a respirator should be used according to OSHA regulations. The chart identifies the type of cutting as well as location (indoor/ourdoor) to make it easy for the operator to comply with these regulations. CSDA-BP-016 is available to all via www.csda.org under the Architect and Engineer Resources section.

Members also have access to over 100 Toolbox Safety Tips that cover a wide array of topics, including, but not limited to, PPE, fall protection and respirators. In addition, the association has developed a 230-page Safety Manual to assist contractors in establishing safety and health programs for the benefit of both employees and owners. The manual is intended to provide a starting point for developing company-specific safety programs. It is divided into a Field Safety Manual, Reference Section and Q & A section. For more information, call 727-577-5004.

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Concrete Cases

Nab Tower was halved in height to 11 meters (36.1 feet) as part of extensive refurbishment work.

A TOWERING SUCCESS Lighthouse Refurbished Using Diamond Tools

A major refurbishment of a century-old lighthouse tower off the southern coast of England was completed with help from a professional core drilling contractor.

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The overall project involved reducing the tower to half its original height above the water, from 22 to 11 meters (72.2 to 36.1 feet), with additional tasks required to create openings in the concrete wall and upper deck of the structure.

Nab Tower was originally constructed as a defensive structure during World War I, but only became operational in 1920 after the conflict had ended. The tower is positioned in the Solent, a 20-mile passage of water that separates the Isle of Wight from the English port cities of Portsmouth and Southampton, and was used during World War II to repel enemy aircraft and sea vessels crossing the English Channel from mainland Europe.

Diamond core bits were used to create four 200-millimeter-diameter (7.9-inch) holes in the tower’s concrete helipad slab.

Core drilling operators arrived by boat along with the rigs, bits and power supplies.

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Concrete Cases

continued

Since then the structure has been used as a lighthouse. It became unmanned in 1983 and a 2013 survey found extensive deterioration to the concrete and steelwork, rendering the tower unsafe to land helicopters on its landing pad. Trinity House, a charity dedicated to safeguarding shipping and seafarers, put a plan in motion to refurbish Nab Tower and secure its future for another 50 years.

The charity appointed general contractor BAM Nuttall of Camberley, England for the work. As work progressed, the company set about finding a specialist concrete cutter to complete some of the refurbishment tasks. The Alton office of CSDA member D-Drill Master Drillers Ltd. was contracted to do the work, which involved the drilling of 46 holes for the installation of ventilation ducts through the concrete wall and upper deck of the lighthouse.

“The complication here was not the holes we had to drill, but the access to the location and the fact that we had to get everything over to Nab Tower and off again in a single day—including drills, generators, the men and their lunch,” said John Barber, D-Drill branch manager. “The job was twice rescheduled due to poor weather conditions. Working ten nautical miles from shore in water that was 20 meters (65.6 feet) deep, everyone had to be absolutely certain that the operators and equipment could be safely transported to and from the tower and that the weather conditions would be calm enough to complete the work.”

Stitch drilling techniques were used to create a 250-millimeter-tall (9.8-inch) by 210-millimeters-wide (8.3-inch) opening.

Operators made six penetrations measuring 107 millimeters (4.2 inches) in diameter to form the opening.

Dean Gough and Liam Berry, operators from D-Drill’s Alton office, were taken by boat across the Solent to Nab Tower on July 2, 2015 to perform core drilling techniques. The operators were equipped with two Hilti DD350 core drill rigs, two 110-volt gas-powered generators and all required equipment, which had to be manually lifted across to the tower after docking.

The core drilling work began with the creation of four holes measuring 200 millimeters (7.9 inches) in diameter to a depth of 400 millimeters (15.7 inches) in the concrete slab next to the helicopter landing area. The holes were positioned approximately 5 meters (16.4 feet) apart and 600 millimeters (23.6 inches) from the edge of the platform. Each hole took around one hour to complete, including the secure mounting and removal of the drill rig.

Next, operators mounted the core drill rigs on a vertical wall and used stitch drilling techniques to form an opening 250 millimeters (9.8 inches) tall by 210 millimeters (8.3 inches) wide through 300 millimeters (11.8 inches) of concrete that was also for the ventilation duct work. A 107-millimeterdiameter (4.2-inch) bit was employed to make six penetrations and create the required opening, taking approximately two hours to complete. A further 36 140-millimeter-diameter (5.5-inch) fixing holes were drilled around the tower for the installation of steel support work.

Nab Tower During the First World War the British Admiralty designed eight towers codenamed M-N that were to be built and positioned in the Straits of Dover to protect allied merchant shipping from German U-boats. Designed by civilian Guy Maunsell, the towers were to be linked together with steel nets and armed with two 4-inch guns with the idea of closing the English Channel to enemy ships. However, by the end of the war in 1918 only one had been completed and was still in harbor awaiting deployment.

In 1920 the completed tower was towed to the Nab Rock, a rock in the deep-water approach to the eastern Solent and previously marked by a lightship. Buoyancy was provided by the honeycomb construction

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of the concrete base, creating 18 watertight compartments. When these were flooded, the structure sank and settled to rest at an angle of 3 degrees from vertical towards the northeast - a characteristic tilt which is obvious to this day. It was manned as a lighthouse and during World War II provided some defense to the Solent approach. The lighthouse became unmanned in 1983 and was converted to solar power operation in 1995. In November 1999, the merchant freighter Dole America, carrying a cargo of bananas and pineapples, hit the Nab. The ship was badly damaged and only avoided sinking by being run aground. The base of the tower suffered superficial and internal damage, which was repaired in 2001.

The tower is now fully refurbished and expected to remain in operation for at least the next 50 years.

Working a 16-hour shift, Gough and Berry ensured that each of the 46 holes required at Nab Tower were completed in one day, much to the satisfaction of the general contractor. Had the core drilling team failed to achieve this, extra time and money would have been spent scheduling and executing a repeat visit.

“Of course, we had to follow very strict health and safety procedures on the job, wearing life jackets at all times. It was important to the customer to get the work done, but there was to be no compromises when it came to safety—hence the job was twice postponed because of the inclement weather conditions,” added Barber. “Our team always looks forward to a challenge and the Nab Tower job very much provided that. It is yet another example of how we work on a whole range of conditions and environments—always ensuring we get the job done.”

D-Drill’s work at Nab Tower was completed in one day, as contracted. The refurbished structure now has new layers of concrete, new Automatic Identification System and radar beacons and a new fixed main light with a range of 12 nautical miles. The installation of updated ventilation ducts was completed on schedule.

A spokesperson for BAM Nuttall, Jonathon Pitt, said: “The Nab Tower refurbishment was a very challenging project, taking two-anda-half years to complete due to the weather dictating our daily ‘commute’. We needed a local, reliable diamond driller with operators who didn’t mind getting their feet wet and D-Drill delivered.”

COMPANY PROFILE D-Drill Master Drillers Ltd. has been a member of CSDA for 34 years and has been in business since 1967. Based in Coventry, England, the company has 94 employees and 70 trucks in 10 locations across the country. D-Drill offers services that include core drilling, slab sawing, wall sawing, hand sawing, wire sawing, controlled demolition, diamond floor grinding and floor preparation services.

RESOURCES General Contractor: BAM Nuttall Sawing and Drilling Contractor: D-Drill Master Drillers Ltd. Coventry, United Kingdom Phone: 44-1752 341364 Email: johnbarber@d-drill.co.uk Website: www.d-drill.co.uk METHODS USED: Core Drilling

REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM

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Core Health Industry Bits continued

Sleep, Sweat and Eat Away Stress

By Erin O’Brien

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ll of us in the concrete renovation industry deal with stress—whether it be from demands on the jobsite, at the office or at home, no one is excluded from the variety of stressors brought on by everyday life. Some people are more effective and successful at handling stress than others. However, high levels of stress that are not properly managed can lead to a variety of health problems. High blood pressure, weight gain, disrupted sleep cycles, mood swings and decreased performance at the office or on the jobsite are just a few of these issues.

For many of us, our schedules are packed full each day. We wake up in the morning to take the dog for a walk or get the kids ready for school and then rush to work, where our days are filled with meetings, emails, phone calls or long hours on a jobsite. When work is finally done for the day, it’s off to pick up the kids, run errands, make dinner or one of many other things that are required of us. There never seems to be enough time in the day. So we make time by getting up early, skipping meals or picking up unhealthy takeout or drive through, skipping a workout and going to bed late. The problem begins when these bad

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habits start to affect our stress levels—lack of sleep compounded by unhealthy eating habits and a lack of physical activity increase our stress levels which just leads to more unhealthy behaviors. It’s a vicious cycle! Below are five areas to focus on to help reduce your stress levels and avoid making it worse.

DON’T SACRIFICE SLEEP TO GET THINGS DONE Learn to identify the stressors in your life and figure out ways to manage them. One of the most common stressors is a lack of sleep.

Adults typically need between seven to nine uninterrupted hours of sleep per night. We may not all be able to achieve that, but it is important to get as much sleep as you can.

Your health and well-being depend on it. It’s tempting to trade that extra hour of sleep to get other things accomplished, but a lack of sleep ramps up sympathetic nervous system activity, pushing us into the “fight or flight” response.

We are then less able to calm ourselves and balance our thoughts and emotions. Sleep deprivation also increases body fat levels, especially around the midsection. Abdominal body fat can increase the risk for developing diabetes, obesity, heart disease and premature death. No matter how well you eat or how

much you exercise – if you aren’t getting enough sleep, you may never be able to lose your love handles or get the six-pack you’ve been working so hard for! Sleep is one of the best ways we have to help the body recover from stress.

Avoid or Limit Drinking Caffeine for Energy When we don’t get enough sleep, most of us feel tired and lethargic, so we turn to caffeinated beverages for that boost of energy we need. Coffee, sodas and energy drinks all contain caffeine and are popular morning and afternoon energy boosters. While caffeine can temporarily increase energy and alertness, it also raises blood pressure and stimulates the release of stress hormones cortisol and adrenaline. Cortisol also plays a role in weight gain, as it triggers your body to store additional fat. Caffeine in small amounts is okay, just avoid large doses or consuming more than one or two cups of coffee per day. Avoid energy drinks all together, as they have been shown to cause much more harm to your body due to their additional ingredients (read The Dangers of Energy Drinks from the March 2013 issue of Concrete Openings).

MAKE TIME FOR MEALS Cortisol is not just released when we’re stressed or drinking a caffeinated beverage. It is also released when we do not eat for long periods of time, convincing our body that it is starving. So if you are skipping meals because you are trying to lose weight or simply don’t have time to eat, when you finally do eat a meal (usually a large meal because you are so hungry), your body will store all of that fat for the next famine. All meals do not have to be three-course complicated meals. Simply eating small meals and snacks every three to four hours will help maintain your blood glucose levels, keeping you from feeling hungry and avoiding the release of cortisol. These meals and snacks should contain healthy fats, protein and fiber.

REFRAIN FROM TURNING TO COMFORT FOODS Another note on cortisol – during the flight or fight response, its job is to replace lost energy in the most effective and efficient way possible. This makes us seek out the most energy-rich sources of food available – sugar and fat. Which then makes us seek out comfort foods – potato chips, chocolate, ice cream, pizza, fast food, etc. All of this extra sugar and fat increases the body’s fat storage and makes it harder to keep off or lose weight. Keep healthy snacks prepared and handy in case of a food emergency, and again don’t go too long between meals.

PRIORITIZE WORKOUTS Besides getting enough sleep, physical activity may be the most important thing you can do to minimize and manage your stress levels. A good workout increases lots of feelgood hormones in your body that will also burn up excess levels of cortisol. When you find yourself getting stressed, even a quick 30-60 second bout of exercise can produce these hormones. If you’re at a desk, squats, pushups, jumping jacks or a quick yoga session will do the trick. If you have a bit longer, several 10-minute periods of moderate activity can be just as effective as a 30-minute gym session.

Run the stairs, take a brisk walk at lunch or just walk down the hallway to talk to a co-worker instead of sending an email. Swing by the water cooler and fill up your water bottle while you’re at it!

As tempting as it is to grab takeout after a long day and relax at home with a glass of wine, beer or liquor, try incorporating some of these tips into your daily routine and see how much better you feel. You should find yourself

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sleeping better, feeling better and looking better! Small changes are better than none and, over time, lead to a healthier lifestyle with much less stress.

Athletic Training from Ohio University and her Master of Science degree in Applied Physiology and Kinesiology from the University of Florida. She is also a Certified Level 1 CrossFit Instructor and member of

Erin O’Brien, MS, ATC is a Certified Athletic Trainer and Marketing Director for O’Brien International, the association management company that manages the Concrete

CrossFit9 in St. Petersburg, FL. She is a regular contributor to Concrete Openings magazine. She can be reached at erin@csda.org or 727-577-5002.

Sawing & Drilling Association. O’Brien received her Bachelor of Science degree in

C O N C RET E O P EN I N G S | 3 9

Tech Talk Tech Talk is a regular feature of Concrete Openings magazine, focusing on equipment, maintenance and technical issues of interest to concrete cutting, polishing and imaging contractors. Readers wishing to have a particular subject addressed can call or email CSDA with their suggestions at 727-577-5004 or rhitchen@concreteopenings.com.

Extension Cords – Part I

By Mike Orzechowski

E

xtension cords, also referred to as portable cords, are used for temporary power connections requiring a flexible cord. They are not intended to be used as a substitute for fixed wiring of a structure, however they may (in some circumstances) be used as a temporary wiring solution—the Occupational Safety & Health Administration (OSHA) defines temporary as less than 90 days. The National Electric Code (NEC) Article 400 addresses flexible cords as a separate category. The code does not consider extension cords to be a wiring method. The key factor for the NEC in using a temporary flexible cord is the need to move the equipment, i.e. temporary use with portable equipment.

Extension cords must be properly sized and rated for the electrical load and must be suitable for the conditions of use and location. The United States Department of Labor, OSHA defines acceptable extension cords for use in construction through OSHA 29CFR 1926 Subpart K – Electrical.

These extension cords are constructed of multiple strands of wire in each conductor in the cord to permit flexibility. The diameter of the strands and the number of strands that comprise each conductor will define the tightest bending radius of each cord before damage to the conductors internal to the cord outer jacket occurs. The overall size of the conductors (American Wire Gauge, AWG), will define the electrical load rating for the cord (Ampacity) and based on the resistance voltage drop on the cord will determine the maximum acceptable length for the cord for the intended use.

The AWG (also referred to as the Brown & Sharpe Wire Gauge) has been used in the United States since the mid-1800s.

The dimensions of the wire are called out in ASTM B258-02. The AWG was originally based on a number of steps to draw the wire to a specific diameter so the larger the number AWG is the smaller the diameter

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of the conductor.

Stranded cables have the equivalent current carrying capacity as a solid wire but might be physically bigger in overall diameter of the conductor due to the airspace between the individual strands of wires. The AWG is typically followed by the number of conductors in the cord, for example a 10AWG (also written #10 or No.10) extension cord for 120 volts having three conductors (hot, neutral and ground) be called out as 10/3. Extension cords in the concrete cutting industry are limited to 18AWG to 2AWG. Plugs and receptacles are defined

by NEMA, the U.S. National Electrical Manufacturers Association, such that the mating parts are independent of any proprietary manufacturer and have a universal fit. There are also special connectors used on specific equipment that may have unique or proprietary pin configurations that are designed into the product for a specific reason, but most follow the NEMA standards. For extension cords in the concrete cutting industry, contractors deal with two basic categories: straight blades and locking. The mating fits on the plugs and receptacles are strategically placed to match the voltage and current ratings on the plug. Some plugs and receptacles have a waterproof cord grip or strain relief to seal the electrical connections (the ultimate seal is molded plugs and receptacles on the cords), and some do not have any waterproof or water resistant seals.

Depending on the application of the cord, the sealing of the cord may be important.

All the extension cords meeting the OSHA requirements for construction will have a clamping arrangement so that forces pulling

on the cord will not strain the actual terminal connection of the wire.

One of the main defining characteristics of OSHA-approved extension cords is in the outer jacket. OSHA references the NEC and calls out hard or extra-hard rated cords. The S is the extra-hard service grade and the SJ is hard service. The difference between the S and SJ can be significant. The SJ (also referred to as junior) has a thinner outer thermoset jacket than the S, so it is limited to 300 volts maximum but it is significantly lighter weight to carry. The S cord has a thick outer rubber thermoset insulation jacket and conductors that is rated up to 600 volts (important for 480-volt equipment) and it is very heavy. The S cord also offers much more abrasion resistance and cord durability.

• If the S or SJ is followed by an O then the outer jacket is oil resistant. If it is a double-O (OO), then both the outer jacket and the insulation on the individual conductors are oil resistant.

• The SJT or ST is basically the same ratings as the SJ and S respectively.

The T denotes a thermoplastic insulated conductors and outer jacket.

• The W (like SOOW) at the end would signify that the cord is rated for outdoor use with W for wet or water but it also includes sunlight UV protection.

• Remember per OSHA, the extension cords are not a substitute for fixed wiring of a structure. They are not to be run through holes in walls, ceilings or floors, doors, windows or similar openings. They are not

to be concealed behind building walls, ceilings or floors.

• Extension cords are not under rugs or carpet because (among other things) it can lead to overheating or can conceal damage.

• Extension cords are not attached to building surfaces. Do not staple or hang from nails or suspend by wire. Attaching them to the building can cause damage to both the inside cords and the outer jacket.

In addition to the OSHA 29CFR 1929 Subpart K standards, OSHA publishes clarifications in the form of letters from time to time and posts them at www.osha.gov.

DOUBLE INSULATED HANDTOOLS (USING TWO-PRONG TOOLS WITH A THREE-PRONG EXTENSION CORD) A common misconception is that if the tool does not have a three-conductor plug then it will not be approved for use on a construction site, as per OSHA rules. If the tool is double insulated, properly rated and marked as such, the double insulated tool does not require a grounding wire.

If a tool has a ground wire, the ground must remain intact i.e. one must not remove the ground prong on a three-prong plug so it can plug into a two-prong outlet.

This can cause a safety issue, because if the tool is not properly insulated or grounded the operator may be at risk of electric shock or electrocution.

Double insulated type tools are designed with a second level of insulation inside the tool to reduce the risk of contact on an energized outer case of the tool if an electric short circuit or wire defect/damage happens inside the inner workings of the tool. The double insulated tools will be marked on the handle or data label with the words ‘double insulated’ or marked with a graphic symbol of a square box inside another square box.

It is important to maintain the tools to be certain the insulation of the outer case of double insulated type tools is not compromised.

REGULATORY AND CONTROLLING AUTHORITIES NEMA defines the plugs and receptacles to maintain consistency regardless of the manufacturer. The mating fits on the plugs and receptacles are strategically placed to match the voltage and current ratings on the plug. For example, a typical household 120-volt u-ground plug rated at 15 amps can

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C O N C RET E O P EN I N G S | 4 1

Tech Talk

continued

plug into a 20-amp receptacle but a 20-amp plug cannot plug into a 15-amp receptacle.

National Recognized Testing Laboratory (NRTL). Laboratories such as Underwriters Laboratories (UL), MET Laboratories, Inc. (MET), Intertek Group (Formerly ETL), Canadian Standards Association (CSA), or FM Approvals (FM). Over 50 volts must be approved by one of these laboratories. All extension cords used in construction should bear the identifying mark from one of these laboratories. Beware of counterfeit marked cords.

National Fire Protection Association’s NFPA 70 NEC national electric code (formally identified as ANSI/NFPA 70). It was first published in 1897 and is revised on a three year cycle. The NFPA NEC is not a regulating code by itself, but is written such that it is frequently adopted by regulating bodies. The NEC makes a distinction between low voltage and high voltage (over or under 100 volts) with different safety criteria. Presumably, skin will protect a body to 100 volts but that might not be an entirely accurate assumption. OSHA 29CFR frequently references NEC. At OSHA’s

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request, the NFPA created NFPA 70E, which addresses safe electrical work practices to comply with OSHA 29CFR 1910 Subpart S and 1926 Subpart K. OSHA 29CFR 1926 (mostly Subpart K – Electrical), is a key tool to OSHA’s enforcement on construction jobsites for use of extension cords.

The International Electrotechnical Commission (IEC) publishes numerous international standards, including standards for plug and sockets, electrical power cords, weather protection on connections and electrical enclosures.

The Institute of Electrical and Electronics Engineers (IEEE) has many standards for electric insulation and testing.

InterNational Electrical Testing Association (NETA) has many published standards for testing international codes, state codes, local ordinances and permit requirements, and governing the use of extension cords. NETA frequently references NEC codes.

Manufacturer requirements or recommendations for proper use are also important to recognize. The instructions of acceptable use on the label of the cord must be followed.

READ PART II OF THIS TECH TALK IN THE SEPTEMBER ISSUE, WHICH WILL COVER: • Labels and Identifying Marks • Connectors, Cord Ends and Stain Reliefs • Proper Sizing of Extension Cords • Proper Care of Extension Cords • Polarity and Electrical Flow • GFCI, Circuit Breakers and Fuses • Repairing Damaged Extension Cords

Mike Orzechowski is the engineering manager for equipment of CSDA member DITEQ Corporation, based in Lenexa, Kansas, and has been in the industry for 19 years.

He is the chair of the CSDA Standards & Specifications Committee, Finance Committee and is also involved with other committees within the association. Mike can be reached at 866-688-1032 or by email at mikeo@diteq.com.

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C O N C RET E O P EN I N G S | 4 3

Polished Perspective

Polishing the Commercial Sector

By Jamie Krueger

F

loors in industrial or commercial settings, such as department stores and warehouses, are under a lot of strain from constant traffic. When looking for a flooring option, functionality is a primary concern. In addition to epoxy, vinyl composition tile (VCT) or terrazzo, polished concrete is gaining traction as an option due to its strength, abrasion resistance and low maintenance; it is also aesthetically pleasing.

Since polished concrete is relatively new compared to other flooring types, it is important to understand why it is a good option for industrial/commercial floors.

POLISHED CONCRETE VS. OTHER FINISHES There are several applications on the market that can make a floor look like it was polished, but it really has a coating. It is important to know the differences between a polished concrete surface and coating treatments to ensure the end result is what architects and building owners intended.

FINISHES Polished concrete has a wide array of finishes and variables to consider. These include different aggregate exposure levels, gloss levels and even whether or not to dye the surface with one or several colors. With that said, most industrial and commercial floors tend to have a low to medium gloss finish with semi-exposed or low-exposed aggregate floors. A salt and pepper finish is very common. This level of exposed aggregate opens up the concrete enough for a densifier to soak in and react with the concrete.

Exposing larger aggregate would raise costs significantly. Also the gloss level tends to be lower than a highly decorative finish not only due to the price, but also the slip resistance is greater when not highly polished.

LOW MAINTENANCE Where once epoxies and VCT were the norm, building owners are seeing the benefits of polished concrete. With polished concrete, floors do not have to be re-epoxied every few years due to the epoxy failing from fork truck traffic, water issues,

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oil entrained floors, poor surface preparation, etc. Over the long term, polished concrete is a much more cost efficient floor; not only because of longevity, but also due to less downtime from having to move equipment to re-epoxy every few years. Polished concrete is a long term flooring solution with the right maintenance program. Using concrete is also a “greener� building material because there are no additional materials needed.

FLATNESS Commercial/industrial floors typically need to be flat and in some cases, floors have specific specifications. Since polished concrete starts with grinding, a flat floor can be achieved. Most of the time flattening a warehouse floor is required when there is heavy fork lift traffic. Uneven floors can be caused by control joints heaving due to the floor moving and therefore a lippage is created. This lippage can be very dangerous because every time a fork lift runs over it, the bump could cause the load to fall off the lift. To solve this problem, the use of an aggressive grit metal tool effectively cuts off the lip. However, a different aesthetic look will result where the previously high-side of the heave will have exposed aggregate and the low-side will have the same overall look, unless the entire floor is cut down to an exposed aggregate level.

INDUSTRIAL/COMMERCIAL FINISH POLISHING STEPS When creating a floor for an industrial/ commercial facility, there are several steps to follow to ensure the installation will be done properly.

GRINDING FOR FLATNESS Normally, industrial or commercial floors do not need a fully-exposed aggregate look, so starting with a very aggressive grit is not necessary. However, there are few instances in which using an aggressive grit, like a 20 grit metal diamond, is necessary. These instances include removing an existing covering or flattening a floor. To achieve a flat floor, a full set of diamonds should be used instead of a half set. The full set will tend to keep the head more rigid, whereas the half set acts like a tripod and results in a wavier floor.

1. Use a metal-bond diamond tool, either a 20 or 30 grit, to level out large differences in the surface or to remove any coatings on an older floor. If a floor does not have a lippage issue or coating, starting with a 50 or 60 grit metal diamond or a 100 or 120 grit metal diamond is the first step.

The first cut will obtain the look the building owner wants. The first cut is also used to open up the floor enough

2.

3.

4.

5.

for the densifier to be absorbed. If the floor is not opened up enough, the floor will not be as hardwearing as it could be and the life of the floor will decrease.

If starting with a 50 or 60 grit metal diamond, use the 100 or 120 grit metal diamonds next to ensure the 50/60 scratch marks are reduced.

It is usually a good idea to use a grout to fill in the air pockets, pin-holes and hair line cracks created when grinding.

Grouts result in a much cleaner floor with better clarity. Acrylic-based grouts are very easy to use and are applied during the last stage of metal-bond diamond grinding. To apply, spray a little water to dampen the floor and then pour the grout on and “broom in” (the broom will clean out the dust in the pores). While the acrylic-based grout is still wet, grind over the surface with a grinder using 100 or 120 grit metal diamonds. This creates a slurry and fills the pores. Next, use a foam squeegee to clean the floor, do not use a broom or vacuum as this may remove some of the grout in the pores.

It is a good idea to densify the floor at this point. The densifier will harden the cement and grout, so the grout will not fall out when grinding. Hybrid diamonds, such as ceramics, can be used after the densifier has completely dried. These hybrid diamonds are more aggressive than resins and help beginner operators remove random scratching that may have been left by the metalbond diamonds. 100 grit hybrids should be followed by 200 grit hybrids. These grits are honing the concrete and should eliminate all visible scratches.

Next, polish with 400 grit resin. This might be the last step depending on gloss specifications. If needed, 800 grit resin pads can be used to achieve further gloss and clarity on the floor. The 400 grit resin closes the floor enough to be a polished surface and still have a good slip coefficient.

The final step is applying a guard to the finished floor. A guard is usually a better option for a high traffic area than a topical sealer. The major difference is that a guard penetrates into the concrete and only leaves a residue on the surface.

When the concrete is fully cured, the guard is buffed off and the concrete is then a wear surface. A sealer is topical

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and usually needs to be heated with a high speed burnisher to cure. While both will protect the floor, the sealer will eventually wear away and need maintenance in high-traffic areas.

Department stores and warehouses are always looking for new, cost-efficient and “greener” ways to enhance their facility.

Knowing the basics of industrial/commercial polishing can give these facilities another flooring option with endless possibilities.

Jamie Krueger is the product manager for surface preparation at Husqvarna Construction Products, based in Olathe, Kansas. He can be reached at 800-288-5040 or by email at jamie.krueger@husqvarnagroup.com.

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Industry Bits Next-Generation Hand Saws Released by Hilti Hilti, Inc. is pleased to announce the release of its next-generation DSH 700-X and DSH 900-X hand-held gas saws, designed for cutting through concrete slabs, asphalt, sewage pipes and other applications. These two new saws incorporate an innovative technology called Easy Start that automatically sets the proper amount of choke for more first-pull starts.

Therefore, there is no need to adjust the choke—simply flip the switch “on” and pull the starter rope. Hilti’s Cyclone Air Filtration System removes most of the dust and debris from the engine air intake flow using centrifugal force. This process works by suctioning the cleanest air from the center of the cyclone, which is then sent to the filter. The DSH 700-X is a 70-cc saw available in 12- and 14-inch models, while the DSH 900-X is a 90-cc saw in 14- and 16-inch models. On-site maintenance of the saws is possible with easy-to-access starter ropes, air filter housings and reinforced blade guards. Common maintenance parts such as air filters, starter ropes, spark plugs and fuel filters are included.

For More Information Tel: 800-879-8000 (U.S.), 800-363-4458 (Canada) Web: www.us.hilti.com (U.S.), www.hilti.ca (Canada)

Husqvarna Launches KV 760 and KV 970/1260 Cutting Carts

Segmented Rim Diamond Blades from Bosch Bosch is pleased to provide a range of 12- and 14-inch-diameter premium segmented rim diamond blades, manufactured for fast, efficient cutting in concrete and other hard materials. The blades have been designed with a tensioned blade core and a high-quality diamond formulation. The tensioned steel core has been engineered using an innovative process that ensures each blade delivers smooth cuts with low vibration to reduce blade wobble. A 0.4-inch segment height has been designed for long blade life and each segment is laser welded to the steel core. This connection method offers the blade high mechanical strength and rigidity, ensuring greater stability during the cut. The blade’s reduction rings are 0.8 to 1 inch, allowing the blade to be used on application-specific concrete cutting saws.

For More Information Contact: Steve Wilcox Tel: 224-232-2417 Email: steve.wilcox@us.bosch.com

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Husqvarna Construction Products has announced the launch of two new cutting carts, the KV 760 and KV 970/1260. Both carts are specially designed to fit Husqvarna gas power cutters. The inclusion of quick-connection points allow the user to easily install a cutter on the cart, providing short setup times, while the depth limiter facilitates easy adjustment of the cutting depth. Both carts come standard with a 3.5-gallon pressurized water tank and a 10-foot hose that connects to the water nozzle on the blade guard.

This new feature, together with the power cutters’ water-saving cutting system, allows for hours of cutting with or without the cart.

Another feature is the lateral adjustment—wheels can be moved to the left or right, allowing the machine to cut close to walls or curbs.

The handle has also been redesigned with a soft insert for operator comfort.

The cart folds for ease of transport and storage.

For More Information Contact: Cate Stratemeier Tel: 913-928-1442 Email: cate.stratemeier@ husqvarnagroup.com

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Replaces Hydraulic Systems More Torque and Power than Pneumatics

CLEAN

CS Unitec Releases EHD 2000 S Core Drill The hand-held EHD 2000 S diamond core drill from CS Unitec is a tool for plumbers, electricians, contractors and other professionals who needing to drill anchor holes or through holes. The two-speed gearbox and 13.6 AMP motor provide the optimum RPM (0-1,000 / 0-2,000 RPM) to drill installation holes up to 6 inches in diameter in internal brick, brickwork, blockwork, soft concrete and other abrasive materials. Features include electronic soft start, temperature control and overcurrent cut-off. The safety slip clutch prevents jamming and allows for hand-held operation. When coupled with an industrial HEPA dust collection vacuum such as CS Unitec’s CS 1445 H, the EHD 2000 S reduces airborne dust to provide a cleaner and safer work environment. The EHD 2000 S is supplied with an M18 male spindle, a 0.625-inch by 11 UNC adapter and a carry case.

Optional diamond core bits are available from CS Unitec.

For More Information Contact: Tom Carroll Tel: 800-700-5919 Email: info@csunitec.com

No Fumes No Gasoline No Hydraulic Oil

CONVENIENT

Hand-Carry Power Pack Single or Three Phase Power

www.RentalToolsOnline.com

Brokk Introduces Smallest Diesel-Powered Demolition Robot Brokk, a manufacturer of remote-controlled demolition machines, recently launched its smallest diesel-powered demolition robot—the Brokk 120 D. The new machine weighs less than one-fourth of the Brokk 400 Diesel. The 6-gallon fuel tank and efficient operation allow run times longer than eight hours before refueling. The Brokk 120 D’s compact size—31 inches wide, 80 inches long and 49 inches high—enables it to pass through any standard door opening as well as maneuver in tight spaces. Weighing approximately 2,700 pounds, the 120 D can drive over weight-restricted floors and is designed for easy transportation to and from jobsites. In addition, the new machine uses the same attachments and generates the same hydraulic power as the Brokk 100.

For More Information Contact: Peter Bigwood Tel: 413-537-5572 Email: peter@brokkinc.com

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C O N C RET E O P EN I N G S | 4 7

Industry Bits

continued

Merit Engineering Makes New Staff Appointments

New Large Frame Hydraulic Power Packs from Wolverine

As Merit Engineering & Equipment Company reaches its fifth-anniversary year, the company is pleased to welcome three new staff members to its growing, family-run business and highlight one of its current employees. Merit was launched in 2011 to build reliable and user-friendly Jorge Vielma saws for the professional concrete cutter.

To support this effort, the company has announced the hiring of Jorge Vielma, Alexis Ferguson DiMarco and Sarah S. Marshall. Jorge Vielma has joined Merit as a mechanical engineer. Jorge is a recent graduate of Northern Arizona University. He will play an important role in designing the next generation of professional-grade floor saws for a global market. Jorge joins brother Mario Ramos, who started with Merit at its Alexis Ferguson DiMarco founding. Mario tackles a number of roles including customer service, purchasing and product development. He brings more than 15 years of technical experience to Merit in welding, powder coating, assembly and quality control. Alexis DiMarco joins Merit as director of business development. Alexis is the daughter of owners Greg and Rita Ferguson and brings more than 10 years of fundraising and organizational development experience to Merit along with a lifetime Sarah S. Marshall of exposure and familial passion to the concrete cutting industry. Sarah Marshall joins the Merit team as director of marketing and communications with over ten years’ experience in marketing, communications and advertising.

Wolverine Equipment is pleased to announce its newest generation of large frame hydraulic power packs. The new WP-67HD is one the company’s most powerful hydraulic power units, producing up to 30 GPM and 3,000 PSI. The unit features a triple hydraulic oil cooling system, with one water/oil and two oil/air heat exchangers. This enhanced cooling system does not require water under most jobsite conditions. Another innovative feature is the new cyclone tank, which recirculates hydraulic oil in an efficient manner with a smaller tank capacity. The WP67HD has a single hydraulic pump with adjustable flow and two circuits. One circuit can run high flow tools such as wall saws or wire saws, while the second circuit can run a smaller tool such as a hand saw, chain saw or core drill. The 66.8-horsepower Kubota diesel engine is smooth, quiet and fuel-efficient. As with all Wolverine hydraulic power packs, the new large frame diesel offers an automatic shut-off for low hydraulic oil level. The 67HD has a unique wheel design for rolling and loading, but is also available in skid mount or trailer mount versions.

For More Information Contact: Sarah Marshall Tel: 917-346-0339 Email: s.marshall@meritsaw.com Mario Ramos

EDCO Introduces Hand-Held Saw Kaddy Equipment Development Co., Inc. (EDCO) is pleased to introduce a new hand-held saw caddy for the professional user. This new accessory for the company’s 16-inch handheld saw gives the tool walk-behind saw capabilities. On its own, the EDCO hand-held saw is suitable for production cutting of concrete, masonry, asphalt, stone and metal.

The saw also has flush cutting capabilities and can be used to create window and door openings. Connecting it to the new EDCO Kaddy turns the hand-held saw into a walkbehind machine, capable of short-run sawing applications like cutting contraction joints.

Operators can now comfortably stand up while cutting horizontal lines using the handheld saw.

For More Information Contact: Jason Stanczyk Tel: 800-638-3326 Email: jstanczyk@edcoinc.com 4 8 | J U NE .1 6

For More Information Contact: Bill Darling Tel: 253-867-6209 Email: bill@wolverineequipment.com

USA Wall Saw Blades from K2 Diamond K2 Diamond is very happy to introduce a new line of diamond blades for the professional user. USA Wall Saw blades are the company’s latest line of American-made blades developed from the Matrix Technology™ diamond tool platform. All these professional-level wall saw blades are designed for elevated performance to meet the demands of today’s professional concrete cutter’s application requirements. Jumbo size segments and a unique blade design have been combined for enhanced cutting speeds and extended blade life. USA Wall Saw blades are available in two bonds, Fast and Faster, with diameters ranging from 18 to 84 inches in diameter and segment widths from 0.175 to 0.250 inch. These blades have proven performance on all wall saw types, in all aggregates types and in all conditions across North America.

For More Information Contact: Mike Nelson Tel: 800 539-6116 Email: mike.nelson@k2diamond.com

What’s YOUR TIME Worth?

CUT FASTER. SPEND MORE TIME EARNING.

8-20HF WALL SAW SYSTEM FEATURES: Powerful 22 kW (30hp) motor Cutting depth up to 36” Precise cutting with rigid, lightweight track Longer life components from machined billet aluminum

PARTS & SYSTEMS STOCKED IN ARIZONA FOR IMMEDIATE SHIPPING.

CALL TO ORDER: 800.321.1240 © 2016 ICS | Blount Inc. Pricing and specifications subject to change without notice.

W WW. C O N C RE TE OPE N IN GS.COM

icsdiamondtools.com C O N C RET E O P EN I N G S | 4 9

Industry Bits

continued

Sensors & Software Updates Conquest 100 GPR System

Sanders Saws Introduces New Wall Saw Lineup Sanders Saws is pleased to introduce its new line of Everest diamond wall saw blades. The use of twin segments and a unique blade design combine to make the new Everest wall saw blades a suitable choice for elevated cutting speeds, enhanced performance and proficient steel cutting.

The new blades are available in diameters ranging from 24 to 54 inches with a range of segment widths from 0.187 to 0.250 inch. Everest wall saw blades can cut concrete, masonry and steel and are available for professional cutters to purchase now.

For More Information Contact: Joe Cammerota Tel: 800-486-0207 Email: sales@sanderssaws.com

Sensors & Software is pleased to release an updated version of its Conquest100 Ground Penetrating Radar (GPR) system. The Conquest100 Enhanced reduces risk by allowing a technician to interpret detailed scans of rebar, post-tension cables, metallic and non-metallic conduits as well as current-carrying wires embedded in concrete.

Once a scan is complete, the system connects to a mobile device, allowing a technician to email information direct from the field. Grid scan detailed mapping generates on-site 3D images to better visualize embedded objects. Line scan reconnaissance surveys provide real-time assessments of targets embedded in concrete. Multiple grid sizes are available in metric (cm) and imperial (inches) units. An on-screen drill locator is included to target coring positions and data is saved to a memory stick for archiving and transfer to a computer. The batteryoperated unit is lightweight and portable for easy transportation to the jobsite.

For More Information Contact: Len LaFond Tel: 800-267-6013 Email: sales@sensoft.ca

New Propane Grinder/Polisher Introduced by DITEQ

Hilti Updates Adhesive Anchor System Hilti, Inc. is pleased to introduce an updated version of the company’s HIT-RE 500 adhesive anchor system. This HIT-RE500 V3 system provides more than a 60 percent increase in published load performance, the lowest installation temperature in the industry and has received ICC approval for cracked and uncracked concrete and all seismic zones. The company states this is the first and only epoxy to cure in freezing temperatures with a temperature range of 23 to 104 degrees Fahrenheit and has the shortest cure times for any epoxy. The HIT-RE 500 V3 is suitable for applications such as structural connections with post-installed rebar, substituting of misplaced and/or missing rebar and anchoring structural steel connections. When used with the new TE-YRT roughening tool, HIT-RE 500 V3 can be utilized in both cracked and uncracked concrete diamond-cored holes, and greatly reduces the cleaning typically required for cored-hole installation. The HIT-RE 500 V3 system comes in 11.1-, 16.9- and 47.3-ounce foil packaging, which is easy to dispense when using the electric HDE 500 or manual HDM 500 Hilti Dispensers.

For More Information Tel: 800-879-8000 (U.S.), 800-363-4458 (Canada) Web: www.us.hilti.com (U.S.), www.hilti.ca (Canada)

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The DITEQ propane grinder/polisher includes a multi-accessory tooling plate for a large range of different tooling options to customize the machine (cup wheels and velcro pad drivers, quick change TEQlok and two different bolt on patterns, including the industry accepted standard three-hole traps). Its wheelbase is designed to maximize the head weight, geared down for lower RPM with increased torque and longer arc swing and operator leverage for a very aggressive grinding action. The machine is balanced using an adjustable rear axle height to compensate for tooling wear with locking adjustment to maintain preset in rough grinding surfaces. The TG18 has a welded steel frame construction with powder coat finish and is made in the U.S.A. An 18-horsepower Kawasaki propane engine powers the TG18, and has an extra heavy duty centripetal clutch specifically designed for harsh working conditions. The TG18 is suitable for coating removal, leveling uneven concrete surfaces and polishing concrete.

For More Information Contact: Mike Orzechowski Tel: 816-246-5515 Email: mikeo@diteq.com

CSU-201509-Concrete Openings hlf pg_Layout 1 7/15/15 4:58 PM Page 1

Jim McGrady, 1946-2016 Industry professional and former CSDA Board member James (Jim) Patrick McGrady, III, passed away April 26, 2016. He was 69 years old. Jim was born July 23, 1946, in Worcester, Massachusetts and graduated from the Naval Academy and Clark University. He had a successful career in the sale and marketing of diamond tools, working for Truco, Target, Husqvarna and DITEQ. Within CSDA, Jim McGrady Jim was a long-term chair of the Convention Committee and was also active in other committees. Outside of work he enjoyed cooking, family travel and playing golf. Jim is survived by his wife of 43 years, Carol Bartolomei McGrady; his two daughters and their husbands, Morgan and Zac Walsh and Marice and Robbie Snodgrass.

He was preceded in death by his twin sisters, Patricia Corwin and Paula Mielinski. He will be missed by all who knew him.

Surface Prep & Demolition Concrete

roughen, reduce & level

Concrete & Steel

remove coatings & laitance

Heavy-Duty, High-Performance Tools Vibro-Lo™ 11-Head Floor Scabbler • 24,200 BPM • Prepare 100 square feet per hour • 7X less vibration than standard models MHS11

Triple-Head Scabblers • 7200 BPM • Reduce, texture, level & roughen concrete • Ideal for crack repair • Dust shroud

Long-Reach Chisel Scrapers • Standard and 'LITE' models • 2', 4', 5' and 6' lengths

DTT Announces New Staff Appointments Diamond Tools Technology (DTT) is pleased to announce the addition of Robert Orawiec and Stacy Ray as technical sales specialists for the company’s range of products. Orawiec joins DTT as the sales specialist for the Illinois and Wisconsin Robert Orawiec sales territory. He has worked for the company for two years, helping on a wide range of projects and responsibilities.

Orawiec has developed a high level of knowledge of the company’s products and customer needs that will translate very well into his new sales position. Ray joins the DTT team as the sales Stacy Ray specialist for the Texas and Louisiana territories.

He brings over 20 years of sales experience in both diamond blades and overall construction products and is based in Houston, Texas.

For More Information Contact: Dan Dennison Tel: 814-591-3252 Email ddennison@diamondtoolstechnology.com

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Dust Collection Vacuum HEPA Filtration Collect Concrete, Masonry and Coatings Dust CS 1445 H

1-800-700-5919

Multi-Head Floor Scabbler • 6500 BPM • Remove concrete fast • Texture and roughen for sealant prep • Dust shroud

MHS5

See videos and more at:

www.csunitec.com

CSDA Operator Certification October 31– November 5, 2016 St. Petersburg College Clearwater, Florida www.csda.org

C O N C RET E O P EN I N G S | 5 1

Industry Bits

continued

Husqvarna Presents New Remote-Control Floor Grinder Husqvarna presents a brand new remote-control floor grinder, the PG 680 RC. The 17.4-horsepower grinder has a unique automated oscillation function that allows the operator to mimic manual operation movements for higher efficiency and greater productivity. The PG 680 RC can fit through a standard door opening, weighs 1,097 pounds and the use of remote control is included for increased productivity. The operator can correct the hoses and power cord, move the dust collector, inspect the floor and prepare the next set of tools—all while the machine is still running. The PG 680 RC has a grinding width of 27 inches with grinding disc speeds of 250 to 1,100 RPM. It also features Dual Drive Technology™ for ergonomic, efficient operation and E-Track, which allows the operator to set the machine to track in a straight line.

For More Information Contact: Cate Stratemeier Tel: 913-928-1442 Email: cate.stratemeier@husqvarnagroup.com

Updated Brokk 60 II Released Brokk is pleased to introduce its updated Brokk 60 II demolition robot, which has 10 percent more power than its predecessor.

The new model is the smallest unit in the Brokk lineup and has an upgraded hydraulic system to increase the machine’s power.

The company has also improved machine handling to make it even more maneuverable in tight spaces, meaning the Brokk 60 II’s machine movements are smoother and more precise than before. The Brokk 60 II weighs 1,102 pounds and its overall dimensions remain the same as the original Brokk 60—23.2 inches wide and 34.3 inches tall. The unit’s three-part arm system works with a variety of attachments including hydraulic hammers, grapples, crushers and buckets to achieve flexibility and versatility.

For More Information Contact: Peter Bigwood Tel: 413-537-5572 Email: peter@brokkinc.com

New Wall Slotter from CS Unitec CS Unitec’s EMF 180 wall slotter cuts parallel channels in concrete and masonry, up to 1.8 inches wide by 2.4 inches deep. It allows pipe, conduit and wire to be placed inside walls and floors, making it suitable for plumbing, HVAC and electrical renovations. It uses two parallel 7-inchdianeter diamond blades, which can be easily adjusted for the desired cutting depth and width. Compact design and parallel grips allow for easy handling and cutting close to the edge. The tool’s closed hood optimizes air flow and makes material removal easier. The integrated vacuum port can be hooked up to a vacuum for concrete dust collection. This feature provides a cleaner and safer work environment. The EMF 180’s powerful 20 AMP motor has a no load speed of 3,100 RPM. For More Information Contact: Tom Carroll Tel: 800-700-5919 Email: info@csunitec.com

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TRUSTED BY PROS SINCE 1946

Handsaws

Power Packs

Loop Saws

Accessories

This year, Concut, Inc. celebrates its 70th anniversary. Over the years, we’ve grown to be one of the nation’s largest American-owned manufacturers of diamond tools and equipment for the professional concrete cutting industry.

We are honored by the trust our customers have placed in us and are proud to produce some of the highest quality products in our industry.

For more information or to request a catalog, please call 800.243.5888 or visit us on the web at Concutusa.com and Wolverineequipment.com.

Leading U.S. Owned Manufacturer of Diamond Tools & Equipment Since 1946 © 2016 Rights W WW. C OConcut N C REInc. TE All OPE N INReserved GS.COM

C O N C RET E O P EN I N G S | 5 3

Industry Bits

continued

Concrete Cutting Systems Expands Operations

Bosch Introduces RH1255VC Rotary Hammer

Concrete Cutting Sytems, Inc., a CSDA member based in Philadelphia, Pennsylvania, has taken advantage of an opportunity to expand its services to Pittsburgh and surrounding counties, effective May 1, 2016. The Pittsburgh office is being managed by Lester Arthur and Jon Wilson. Between them, Arthur and Wilson have over 30 years of experience in the concrete sawing and drilling industry together with extensive local knowledge of the Pittsburgh area.

The company, established in 1995, looks forward to serving existing and new customers in Western Pennsylvania.

Bosch is pleased to introduce the RH1255VC 2-inch SDS-Max® rotary hammer, which delivers 14.1 foot pounds of impact energy and weighs just 26.2 pounds. This new rotary hammer includes innovations like Turbo™ Power, Constant Response™ circuitry and Vario-Lock™ positioning. The variable speed dial of the RH1255VC provides two drilling speeds and allows the user to match speed to application while the Vario-Lock™ positioning feature allows users to rotate and lock the chisel with precision.

Turbo™ Power gives the tool more torque and boosts speed in hammer mode while the tool’s Vibration Control™ technology offers a mass-damper control in the hammer mechanism to reduce vibration levels at the user’s hands. The Bosch RH1255VC comes with the standard Bosch SDS-max® 2-inch chuck. The SDS-max Bit system provides toolfree bit changes with automatic bit locking and maximum impactenergy transfer.

Lester Arthur

For More Information Contact: Jon Wilson Tel: 888-444-9008 Email: jonwilson@sawcutr.com www.concretecuttingsystems.net

For More Information Contact: Steve Wilcox Tel: 224-232-2417 Email: steve.wilcox@us.bosch.com Jon Wilson

Concrete Sawing & Drilling Contractors Insurance Program  General Liability  Auto Liability  Property  Bonds

 Excess Liability  Pollution  Equipment  & More

We can work directly with you or, in most cases, with your current insurance agent.

Maribel Hernandez Underwriter

maribel@apgen.com 707.996.2912 x 13

Nikki Carpenter Broker Relations nikkic@apgen.com 707.721.9545

Celebrating over 50 years of service, we are your dedicated industry professionals.

Lic. #0606980

5 4 | J U NE .1 6

800.624.5829

www.apgen.com

Curb-Cutting Machine Commended at Industry Awards A machine invented by Julie White, managing director of CSDA contractor member D-Drill Master Drillers Ltd., has been highlycommended at an industry awards ceremony. White came up with the idea for the D-Kerb when the company was asked to cut curbs to 45 degrees in-situ. Failing to find a suitable machine to do the job, Julie and her father, Peter, designed, developed and created the D-Kerb. It has already worked on range of projects, including an early phase of a Cycle Superhighway in London, England, and its early successes were recognized at the U.K.’s Construction News Specialist Awards 2016. The company was highly commended in the innovation category during a ceremony in London that brought together hundreds of people from the construction industry.

For More Information Contact: Julie White Tel: 44-2476 612858 Email: juliewhite@d-drill.co.uk

STIHL Inc. Names Vice President of Operations STIHL Inc. is pleased to welcome Stephen Ballenger as the new vice president of operations in the U.S. Ballenger will be responsible for all production operations at the more than one million square foot corporate Stephen Ballenger headquarters in Virginia Beach, Virginia, where the company produces more than 275 models of handheld outdoor power equipment. His role will include directing manufacturing, engineering, materials and procurement, logistics, buildings, maintenance and quality assurance activities.

Ballenger brings more than 30 years of engineering and manufacturing expertise and leadership experience to STIHL, most recently serving as president of Light Vehicles USA for Metalsa in Elizabethtown, Kentucky. Previous leadership experience includes positions at Carl Zeiss, Hella and a 15-year career with Bosch North America. Ballenger has a Master of Science in industrial management and a Bachelor of Science in mechanical engineering from Clemson University.

For More Information Tel: 800-467-8445 www.stihlusa.com

ACI Elects New President The American Concrete Institute (ACI) introduced its 2016-2017 president during The Concrete Convention and Exposition in Milwaukee, Wisconsin in April. Michael J. Schneider has been elected to serve as president for a two-year term.

Schneider, FACI, is the senior vice president and chief people officer at Baker Concrete Construction, Inc. in Monroe, OH, and has been with the company for over 38 years. He was named a Fellow of ACI in 2006. He previously served on the ACI Board of Direction and as Chair of the Strategic Development Council (SDC) and the ACI Foundation, of Michael J. Schneider which he is currently a Trustee. He has also been active in the American Society of Concrete Contractors (ASCC), where he served as president during 2005 and 2006.

For More Information Contact: Julie Webb Tel: 248-848-3148 Email: julie.webb@concrete.org W WW. C O N C RE TE OPE N IN GS.COM

DIAMOND TOOLS & EQUIPMENT EQUIPMENT

Visit the association’s website www.csda.org • News • Events • Resources

C O N C RET E O P EN I N G S | 5 5

Certification OPERATOR CERTIFICATION CSDA’s Operator Certification is a comprehensive six-day program that combines detailed classroom instruction with on-slab demonstration and evaluation of advanced concrete cutting techniques. Safety, proper equipment use and efficiency are emphasized. CSDA certified operators are recognized industry-wide for their proficiency in the full range of sawing and drilling applications.

MINIMUM REQUIREMENTS • Successful completion of CSDA Cutting Edge, Slab Sawing & Drilling 101, Wall Sawing 101 or Wire Sawing 101 • Three years field experience (4,500 hours) • Successful completion of 10-hour OSHA Construction Safety course • No more than one lost-time injury within the last three years • Unrestricted driver’s license • Negative drug test within 30 days of taking the course

ABC CUTTING CONTRACTORS BIRMINGHAM

CORING & CUTTING OF SPRINGFIELD, INC.

HOUSLEY DEMOLITION CO., INC.

Bessemer, Alabama

Nixa, Missouri

Visalia, California

ABC CUTTING CONTRACTORS MOBILE

CORING & CUTTING SERVICES, INC.

INTERNATIONAL DRILLING & SAWING, INC.

Daphine, Alabama

Bentonville, Arkansas

Montgomery, Alabama

ACE CONCRETE CUTTING

CORING & CUTTING SERVICES, INC.

INTERNATIONAL DRILLING & SAWING, INC.

Cumberland, Rhode Island

Jacksonville, Arkansas

Pensacola, Florida

ACCU-CUT CONCRETE SERVICES

CR MEYER

J-RAY CONTRACTORS, LLC

Palm Harbor, Florida

Oshkosh, Wisconsin

Marrero, Louisiana

AGGREGATE TECHNOLOGIES

CUT-RITE CONCRETE CUTTING CORP.

JACK DOHERTY CONTRACTING

Houston, Texas

Pawtucket, Rhode Island

Woburn, Massachussetts

AMERICAN EAGLE CONCRETE SERVICES

CUTTING EDGE SERVICES CORP.

K.C. CORING & CUTTING CONSTRUCTION, INC.

Orlando, Florida

Batavia, Ohio

Kansas City, Missouri

ANDERS CONSTRUCTION, INC.

D.M. CONLON/DAN-KEL CONCRETE CORING, SAWING & SCANNING

L&S FORMLESS CURB COMPANY

Harvey, Louisiana

ATLANTIC CONCRETE CUTTING, INC. Mt. Holly, New Jersey

AUSTIN ENTERPRISE Bakersfield, California

B.T. RENTALS LIMITED Woodbrook, Trinidad & Tobago

CENTRAL CONCRETE CUTTING, INC. Edgar, Wisconsin

CHICAGO CUT CONCRETE CUTTING Chicago, Illinois

COBRA CONCRETE CUTTING SERVICES CO. Arlington Heights, Illinois

CONCRETE CUTTING & BREAKING CO. Jacksonville, Florida

CONCRETE CUTTING SPECIALISTS, INC. Freeland, Michigan

CONCRETE PENETRATING CO. Dallas, Texas

CONCRETE RENOVATION, INC. San Antonio, Texas

CONSTRUCTION DEBRIS REMOVAL, INC. St. Augustine, Florida

CORE SOLUTIONS LTD. Maraval, Trinidad & Tobago

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Myrtle Beach, South Carolina

DARI CONCRETE SAWING AND DRILLING Raleigh, North Carolina

DEANDREA CORING & SAWING, INC. Henderson, Colorado

DELTA CONTRACTORS & ASSOCIATES, LLC Baltimore, Maryland

DIXIE CONCRETE CUTTING CO. College Park, Georgia

EAST COAST CONCRETE SPECIALITIES, INC. Jessup, Maryland

ELMER’S CRANE & DOZER, INC. Traverse City, Michigan

HAFNER & SON, INC. Danielsville, Pennsylvania

HARD ROCK CONCRETE CUTTERS, INC. Wheeling, Illinois

HARD ROCK SAWING & DRILLING SPECIALIST CO. Keshena, Wisconsin

HOLES INCORPORATED Houston, Texas

HOLES OF SAN ANTONIO, INC. San Antonio, Texas

Hanover, Pennsylvania

LIUNA LOCAL 506 TRAINING CENTRE Richmond Hill, Ontario, Canada

LOMBARDO DIAMOND CORE DRILLING CO. Santa Clara, California

M6 CONCRETE CUTTING & CORING Wichita, Kansas

PENHALL COMPANY/CONCRETE CORING COMPANY OF HAWAII Aiea, Hawaii

QUICK CUTS CONCRETE CUTTING SERVICES, LLC Belvidere, Illinois

ROUGHNECK CONCRETE DRILLING & SAWING Morton Grove, Illinois

SUPER CITY CONCRETE CUTTING Ocean Grove, Victoria, Australia

TRUE LINE CORING & CUTTING OF CHATTANOOGA, LLC Chattanooga, Tennessee

TRUE LINE CORING & CUTTING OF KNOXVILLE, LLC Knoxville, Tennessee

TRUE LINE CORING & CUTTING OF NASHVILLE, LLC Nashville, Tennessee

WOLF INDUSTRIAL SERVICES San Francisco, California

COMPANY CERTIFICATION The CSDA Company Certification Program is the first of its kind in the industry. This program has been created for cutting contractors to provide owners, architects, engineers, general contractors and government officials with a valuable pre-qualification tool that acknowledges sound business practices. It is available to all sawing and drilling contractors.

A COMPANY MUST MEET THE FOLLOWING CRITERIA TO ACHIEVE CERTIFICATION: • Meet the basic safety, and insurance requirements of the industry • Undertake sound operational and financial best practices • Provide evidence it has took part in basic training or certification programs to better its employees and the company as a whole • Successfully pass a written application review

ATLANTIC CONCRETE CUTTING, INC.

DI-TECH INTERNATIONAL, INC.

Mount Holly, New Jersey

Winnipeg, Manitoba, Canada

AUSTIN ENTERPRISE

GREENE’S, INC.

Bakersfield, California

Woods Cross, Utah

CENTRAL CONCRETE CUTTING, INC.

HARD ROCK CONCRETE CUTTERS, INC.

Edgar, Wisconsin

Wheeling, Illinois

COBRA CONCRETE CUTTING SERVICES CO. HOLES INCORPORATED Arlington Heights, Illinois

Houston, Texas

CONCRETE RENOVATION, INC.

ONLINE CONCRETE CUTTING SERVICES PTY. LTD

San Antonio, Texas

CUTTING EDGE SERVICES CORP. Batavia, Ohio

DEANDREA CORING & SAWING, INC.

Seven Hills, New South Wales, Australia

WESTCOAST CUTTING & CORING, LTD. Coquitlam, British Columbia, Canada

Henderson, Colorado

ST-115 CERTIFICATION This certification is the first of its kind for measuring concrete surfaces and their surface texture value. The approach is to measure and analyze the surface texture in order to understand how the texture is influenced by the finishing process, and how the surface texture influences its behavior with regards to gloss, friction and sustainability. The certification is based on Standard CSDA-ST-115.

A CERTIFIED OPERATOR: • Has been provided instruction on how to correctly measure concrete micro surface texture • Has knowledge of proper tool selection to mitigate damage • Passed a written test • Was issued a certificate upon completion of the class For more information about this Standard, certification or a list of current ST-115 Certified companies, visit www.csda.org/st115.

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C O N C RET E O P EN I N G S | 5 7

Membership

NE

North American Contractors

Distributors

MAREK SAWING & DRILLING, LLC

A-CORE CONCRETE CUTTING, INC.

Spring, Texas

CIVIL FIELD SERVICES

MAVO CONCRETE SAWING SERVICES INC.

W

Salt Lake City, Utah

PROSOURCE DIAMOND TOOLS, LLC Indianapolis, Indiana

ME

Vincent, Alabama

White Bear Lake, Minnesota

CLEAR CUT CONCRETE

NEXXT CONCRETE CUTTING Anaheim, California & CONSTRUCTION LTD. Edmonton, Alberta, Canada RENTAL TOOLS ONLINE

Cave Creek, Arizona

MBE

CONCRETE CUTTERS, INC. Kaukauna, Wisconsin

QUICK CUT, INC.

CORETECH INDUSTRIES LTD.

TIGER TRENCHING

Sterling, Virginia

St. George, Utah

Abbotsford, British Columbia, Canada

R

DOT DIAMOND CORE DRILLING, INC. Hyattsville, Maryland

Affiliates

Lake Havasu City, Arizona

Overseas Contractor

Bakersfield, California Prattsville, Arizona

Caracas, Venezuela

Washington Park, Illinois

AVENGER PERFORMANCE GROUP PRODUCTIONS TEAM INC.

REPIMEX C.A.

HAYDEN WRECKING

QUEST BUILDING PRODUCTS INC.

THE HIRING RANGE

S

Rogers, Arkansas

MEMBER

BENEFITS SAFETY RESOURCES

UNTS O C DIS GRAM ember PROion negotiates mional

sociat ith nat The As programs w PS and t i benef aples, U provide t S e k i o rs l order t vendo .com in rtunities ly p p u s ppo V-belt vings o mbers. cost-sa DA Me for CS

5 8 | J U NE .1 6

NETWORKING

AND TOOLBOX SAFETY TIPS (TSTS) • 230-page CSDA Safety Manual • Safety Handbook in English/Spanish • Safety Videos for concrete cutters • Over 100 Toolbox Safety Tips (TSTs)

AT THE ANNUAL CONVENTION AND QUARTERLY MEETINGS The number one benefit for members has always been the opportunity to network with cutting professionals at the annual convention and quarterly meetings.

This networking provides opportunities to forge new relationships and learn from other experienced professionals.

NEXT GEN

CSDA NEXT GENERATION GROUP The group aims to continue the growth of the association while serving the needs and wants of the younger generation, with the goal of continuing to set a standard of excellence.

24/7

THE CSDA WEBSITE AT WWW.CSDA.ORG CONTAINS A WEALTH OF INFORMATION AVAILABLE 24/7 IN THE “MEMBERS” SECTION. IN ADDITION, CSDA’S FACEBOOK PAGE AND DISCUSSION FORUM GROUP PAGE ALSO PROVIDE MEMBERS WITH A CHANCE TO DISCUSS TECHNICAL ISSUES, SELL EQUIPMENT, HIRE EMPLOYEES OR ANY OTHER RELEVANT TOPICS.

TESTIMONIAL Like almost every cutting company, the business started small. There were not many other concrete cutting companies in the area and those that were around were competitors. I felt as though I was on my own in terms of how to solve jobsite problems and grow the business. I was like a mad scientist—custom engineering equipment to run large blades or fabricating my own mounting brackets as I did not know of the resources that were out there. I knew there had to be others out there facing similar challenges and looking for solutions. That is when I found CSDA. I felt the comradery at member events right away and I was able to talk to people who were happy and willing to help out. Whether it was questions about pricing or looking for tips about dispatching, I now had a set of peers who had been through it and knew the answers.

Tim Rudder As a result, the business has grown a great International Drilling & Sawing, Inc. deal. Now I can help others while figuring Montgomery, Alabama tr@idscuts.com out how to do things bigger and better than before and with the latest technology.

It is easy to feel like you are out there on your own in this business, so I can tell you that my investment in CSDA membership has been priceless. For me, the important thing was not just to be a member by name. I truly felt the benefits of membership by turning up to events and actively participating. By taking time to meet with and learn from other members, I gained a lot. In some ways, membership is like an insurance plan. It is not something that can be established after the fact or when something comes up, it has to be worked on and grown in advance so you are always ready when challenges present themselves.

TRAINING OVER 4,000 INDUSTRY PROFESSIONALS HAVE GRADUATED FROM MORE THAN 20 CLASSROOM, HANDS-ON AND ONLINE CSDA TRAINING AND CERTIFICATION PROGRAMS FOCUSED ON CUTTING DISCIPLINES, ESTIMATING, POLISHING AND SAFETY. ONLINE TRAINING AT WWW.CSDATRAINING.COM OFFERS A COST-EFFECTIVE ALTERNATIVE TO THOSE NOT ABLE TO AFFORD THE TIME OR THE MONEY TO SEND OPERATORS TO CLASSES.

DUESSCHEDULE REGISTER ONLINE AT WWW.CSDA.ORG GROSS SALES

NORTH AMERICAN CONTRACTOR

POLISHING CONTRACTOR

GPR IMAGING MANUFACTURER DISTRIBUTOR OVERSEAS CONTRACTOR CONTRACTOR

$0 – 1M

$595

$750

$1,275

$925

$1 – 2M

$965

$1,580

$1,180

$2,335

$1,750

$2 – 3M

$1,475

$750

$400

$3 – 5M

$1,985

$1,250

$3,750

$2,825

$5 – 10M

$2,500

$5,070

$2,825

> $10M

$3,150

$6,295

$2,825

AFFILIATE

$735

For more information about CSDA membership, visit www.csda.org, call 727-577-5004 or email info@csda.org.

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C O N C RET E O P EN I N G S | 5 9

Calendar 2016 JUNE 2-3 CSDA Summer Meetings The Westin Minneapolis Minneapolis, MN Tel: 727-577-5004 Email: info@csda.org www.csda.org

AUGUST 24-26 Concrete Show South America Sao Paulo Expo Sao Paulo, Brazil Tel: 55-11 4878 5990 Email: contato@concreteshow.com.br www.concreteshow.com.br

AUGUST 24-26 Our World in Concrete & Structures Singapore Tel: 65-67332922 Email: john@cipremier.com www.cipremier.com

SEPTEMBER 6-7 World of Concrete Europe Palais des Congres Paris, France Tel: 33-176 771 154 www.worldofconcreteeurope.com

SEPTEMBER 15-18

OCTOBER 7-8

ASCC Annual Conference Doubletree by Hilton Bloomington Minneapolis, MN Tel: 314-962-0210 Email: mforsythe@ascconline.org www.ascconline.org

CSDA Wire Sawing 101 Training Diamond Products Elyria, OH Tel: 727-577-5004 Email: info@csda.org www.csda.org

SEPTEMBER 25-29

OCTOBER 20-22

Concrete Décor Show 2016 Town & Country Resort and Convention Center San Diego, CA Tel: 877-935-8906 Email: sheri@protradepubinc.com www.concretedecorshow.com

International Concrete Polishing & Staining Conference Wisconsin Center Milwaukee, WI Tel: 800-538-5544 Email: rolson@acbusinessmedia.com www.cpsconference.com

SEPTEMBER 26-28 Aggregates China 2016 China Import and Export Fair Pazhou Complex Guangzhou, China Tel: 86-20-29188152 Email: grand.fa@grahw.com www.bbtee.net/en/

OCTOBER 3-4 CSDA Slab Sawing & Core Drilling 101 Training Diamond Products Elyria, OH Tel: 727-577-5004 Email: info@csda.org www.csda.org

CSDA Fall Meetings Boston, MA

CSDA Wall Sawing 101 Training

OCTOBER 31-NOVEMBER 1 CSDA Slab Sawing & Core Drilling 201 Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

NOVEMBER 2-3 CSDA Wall Sawing 201 Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

NOVEMBER 4-5 CSDA Wire Sawing 201 Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

DECEMBER 1-2 CSDA Winter Meetings Laguna Cliffs Marriott Dana Point, CA Tel: 727-577-5004 Email: info@csda.org www.csda.org

SEPTEMBER 8-9

2017

CSDA Fall Meetings Sheraton Boston Hotel Boston, MA Tel: 727-577-5004 Email: info@csda.org www.csda.org

JANUARY 16-20 World of Concrete Las Vegas Convention Center Las Vegas, NV Tel: 972-536-6423 www.worldofconcrete.com

SEPTEMBER 14–16 Concrete Show South East Asia Jakarta International Expo Jakarta, Indonesia Tel: 62-21 2930 5959 Email: niekke.budiman@ubm.com www.concreteshoweasia.com

6 0 | J U NE .1 6

OCTOBER 5-6

MARCH 7-11

CSDA Wall Sawing 101 Training Diamond Products Elyria, OH Tel: 727-577-5004 Email: info@csda.org www.csda.org

CONEXPO-CON/AGG Las Vegas Convention Center Las Vegas, NV Tel: 800-867-6060 Email: swisniewski@AEM.org www.conexpoconagg.com

Advertising and Readership Circulation 18,000+ minimum, per issue 11,000+ member and prospective member companies made up of contractors, manufacturers, distributors and affiliates

7,000+ general contractors, engineers, architects and government officials who specify cutting, polishing and imaging

Who Reads the Magazine?

Concrete Openings reaches cutting, polishing and imaging contractors as well as specifiers of these services, including engineers, architects, general contractors and governmental agencies. Why waste your message on unnecessary circulation?

Advertising in Concrete Openings guarantees a targeted audience of industry professionals.

READERSHIP BY PROFESSION

Target the Specialized Industry of Concrete Cutting, Polishing and Imaging Advertising in Concrete Openings magazine is the only way to reach the specialty market of cutting, polishing and imaging contractors who work with concrete, asphalt or masonry because it is specifically targeted to this segment of the industry.

How Do You Reach 18,000+ Concrete industry Professionals?

Each issue of Concrete Openings magazine is sent to more than 11,000 operators, equipment manufacturers and suppliers in the concrete cutting, polishing and imaging industry, and more than 7,000 specifiers of these services around the world.

Not a Subscriber?

Get your free subscription today!

Visit www.concreteopenings.com and click “subscribe.”

52%

Readership Per Issue A poll of Concrete Openings subscribers revealed that 66% pass on their copy of the magazine to at least one other person, with almost 25% stating that the magazine is passed on to four or more people each issue.

This translates to an average of four people reading each issue of the magazine for a total readership per year of approximately 60,000.

8% 40%

• Specifiers • Contractors • Manufacturers, Distributors

CSDA Social Media CSDA’s social media pages are packed with all the latest news, updates, photos and videos from the association and Concrete Openings magazine. Look out for exclusive content and become “friends” with others who are looking to network and promote the sawing and drilling industry. Join our growing fan base and stay in touch with the association through your PC, laptop or mobile device. Find direct links to these pages at www.csda.org.

Concrete Openings Website Concrete Openings has its own website.

Advertisers have direct links to their websites placed on our Advertisers page as a complimentary addition to ad placement.

A full page-turning copy of the magazine, including ads, is also available for visitors to read on the website. Visitors to the site can now access our advertisers at the touch of a button. The Concrete Openings website also has banner advertising opportunities available throughout the year.

Visit www.concreteopenings.com for more information.

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C O N C RET E O P EN I N G S | 6 1

Advertisers To receive additional information about products advertised in this issue, contact the vendors below.

ADVERTISER

PAGE

PHONE

EMAIL

54

Apollo General Insurance Agency, Inc.

707-996-2912 x17

bobe@apgen.com

29

Brokk, Inc.

877-276-5548

peter@brokkinc.com

53

Concut, Inc.

253-872-3507

suemayer@concutusa.com

51

CS Unitec, Inc.

203-853-9522

info@csunitec.com

Inside front cover, 43

Diamond Products

800-321-5336

jpalmer@diamondproducts.com

15

Diamond Tools Technology

877-345-6388

ddennison@diamondtoolstechnology.com

31, 45, 55

DITEQ Corporation

816-246-5515

jmiller@diteq.com

5

Dixie Diamond Manufacturing

678-296-3747

gwolters@dixiediamond.com

39

Expert Equipment Company

713-797-9886

expertequipment@sbcglobal.net

42

GelMaxx

619-701-7246

info@gelmaxx.net

63

Geophysical Survey Systems, Inc. (GSSI)

603-893-1109

harmonj@geophysical.com

Inside back cover

Hilti North America

918-872-3079

corrie.brock@hilti.com

32, 33, Outside back cover

Husqvarna Construction Products

913-928-1442

cate.stratemeier@husqvarna.com

2

ICS, Blount Inc.

800-321-1240

marketing@icsdiamondtools.com

21

Merit Engineering & Equipment Company

928-771-0575

r.ferguson@meritsaws.com

49

Pentruder, distributed by ICS, Blount Inc.

800-321-1240

terry.martin@blount.com

27

Pullman Ermator

855-736-2869

info@ermatorusa.com

47

Rental Tools Online

866-952-8665

ken@nationaltoolleasing.com

Visit Our Website

.com 6 2 | J U NE .1 6

Director’s Dialogue

Big Win-Win!

PATRICK O’BRIEN Executive Director

C

SDA won big with its World of Concrete cosponsor rebate this year and, if you were one of the many people who used the association’s promotional code to attend the show, you did too!

To explain, CSDA is one of 18 cosponsor associations that help promote attendance for this annual international trade show. In exchange for these efforts, World of Concrete show management distributes rebates based upon how successful the cosponsor associations are in registering attendees. The association’s 2016 rebate was over $52,000, the highest ever received by CSDA! CSDA staff created and conducted an aggressive marketing campaign, with support from members and friends in the industry, to achieve this goal. The campaign was directed at letting attendees know that if they register using CSDA’s A26 code they pay only $20 for registration, saving $45 on advanced registration and $65 onsite.

World of Concrete 2016 attendance was up 8% to over 60,000 total attendees. CSDA registered 1,446 attendees, which is the highest level recorded by the association. That means that each registration credited to CSDA was worth about $36. While the CSDA registrants were a small percentage of the total attendees, the results were quite impressive. This also means that CSDA can perform even better in 2017 if more attendees who are concrete cutters, polishers, GPR imagers, selective demolition contractors or others use our code.

6 4 | J U NE .1 6

CSDA not only uses its rebate to fund and support member programs in areas like safety and training, but also to work on programs and initiatives that support the entire industry. A current and prime example of this is an industry-wide challenge to OSHA’s Final Rule on Occupational Exposure to Crystalline Silica.

The association is working with 24 other organizations as part of the Construction Industry Safety Coalition to challenge the rule and make it workable for contractors in the construction industry.

CSDA has testified before OSHA, the Office of Management and Budget, attended numerous meetings and spent countless hours reviewing the details of the rule. Our goal, as always, has been to help make any rule workable and cost effective for CSDA members and the entire industry.

So I hope you will remember this Director’s Dialogue when you are making preparations to attend next year’s World of Concrete, which is scheduled for January 16-20, 2017 in Las Vegas. Thanks to each and every person who used, or help to promote, CSDA’s code. With your help, we can continue to make this rebate a win-win for everyone in the industry.

OUR ROBOTS SPEAK FOR THEMSELVES Just try one. We know you’ll find a machine that is more responsive, more precise and engineered to operate in even the toughest (not to mention tightest) places.

Husqvarna Construction Products’ line of five remote-controlled demolition robots are some of the most innovative on the market. They are not only easy to operate, but also easy to service. They are built to last, with a sturdy design, and controls that are responsive; delivering precise demolition power where you need it most.

Request a demonstration from the contact page on our website, www.husqvarnacp.com or call customer service at 800-845-1312. facebook.com/husqvarnaconstruction

youtube.com/husqvarnaCP

17400 West 119th Street • Olathe, Kansas 66061 • T 800-288-5040 • F 800-825-0028 • www.husqvarnacp.com 2077 Bond Street • North Bay, Ontario P1B 4V6 • T 800-461-9589 • F 800-825-0028 • www.husqvarnacp.ca Copyright © 2016 Husqvarna AB (publ.). All rights reserved. Husqvarna is a registered trademark of Husqvarna AB (publ.).