Mar 15 Issue, Concrete Openings

MARCH 2015 THE OFFICIAL MAGAZINE OF CSDA

Aiming for theStars

Observatory Renovated by Concrete Cutting

AUSTRALIAN DAM CUT WITH WIRE SAW TIER 4 FINAL DIESEL REGULATIONS GPR IMAGING AT FLORIDA HOSPITAL

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PRESIDENT’S PAGE

Judith O’Day and Kevin Baron

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s one of my final tasks as CSDA President, I have the pleasure of introducing you to the incoming President, Kevin Baron, who will officially take up the role during the association’s Annual Membership Meeting later this month in St. Petersburg, Florida. I have known Kevin for many years and he has done a fantastic job as vice president, so I am confident that the association will continue to prosper under his leadership. His family has been involved in the diamond tooling industry for several decades, so his knowledge and experience will be of benefit to CSDA as he assumes the position of President. I wish him the best of luck.

Judith O’Day Outgoing CSDA President

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orking with Judith as vice president for the past two years has been an honor and truly my pleasure. During this time, I have seen CSDA make many exciting and significant gains. The addition of polishing and imaging membership categories has been a positive step, while young and dynamic leaders are becoming committee chairs and Board members through the association’s Next Generation group. We also have a new aggressive marketing plan and a restructuring of the CSDA Company Certification Program is underway. These are just a few examples. As the incoming President, I’m excited about the future of CSDA and I’m looking forward to working with the Board, committee chairs and the wider membership to continue growing and improving the association.

For those of you that don’t know me, I am the CEO of Western Saw in Oxnard, California and a third-generation industry professional. Western Saw became a member of CSDA in 1986, but it took several years for me to stop and see the positive effect CSDA was having on the industry. For me, there are many benefits to being a member, but the most important benefit is networking. The association provides me with several opportunities to talk with my customers— diamond tool manufacturers—and the end users that are sawing and drilling contractors about how our products are preforming on the job. The feedback I receive from cutters is invaluable to my company and having this dialogue can only be advantageous for the industry.

Being a member of CSDA has also given my son and nephew, our fourth generation of diamond tool manufacturers, the opportunity to meet other young up-and-coming leaders of the industry. The knowledge that they are gaining from discussing business issues with others in the Next Generation group and experienced industry professionals is helping them develop skills needed to become successful leaders. My family and our business truly enjoy the rewards of being a CSDA member and I look forward to serving the membership as CSDA President for the next two years.

Kevin Baron Incoming CSDA President

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THE OFFICIAL MAGAZINE OF CSDA

CSDA OFFICERS

CONCRETE CASES

President, Judith O’Day Terra Diamond Industrial joday@terradiamond.com Vice President, Kevin Baron Western Saw, Inc. kevinb@westernsaw.com

Aiming for the Stars

Secretary/Treasurer, Mike Orzechowski DITEQ Corporation mikeo@diteq.com

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Past President, Jim Dvoratchek Hard Rock Concrete Cutters, Inc. jimd@hardrockconcretecutters.com Executive Director, Patrick O’Brien Concrete Sawing & Drilling Association pat@csda.org

Observatory Renovated by Concrete Cutting

CSDA BOARD OF DIRECTORS (Terms expiring in 2015) Ty Conner Austin Enterprise tconner@austin-enterprise.com Mark DeSchepper Construction Solutions, LLC mdeschepper@construction-solutions.com Matthew Finnigan National Concrete Cutting, Inc. matthewf@nationalconcretecuttinginc.com Mike Greene Greene’s, Inc. mikeg@greenesinc.com

Redbank Creek Dam Renovation

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Diamond Tools Used to Cut Massive Structure Down to Size

Greg Lipscomb Diamond Products Limited glipscomb@diamondproducts.com Sid Kilgore Dixie Diamond Manufacturing skilgore@dixiediamond.com

CSDA BOARD OF DIRECTORS (Terms expiring 2016) Paul DeAndrea DeAndrea Coring & Sawing, Inc. paul@deandreacoring.com Matt Dragon Hilti, Inc. matthew.dragon@hilti.com

Safe Passage

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Patrick Harris Concrete Renovation, Inc. ptharris@sbcglobal.net Kellie Vazquez Holes Incorporated kvazquez@holesinc.com Kevin Warnecke ICS, Blount Inc. kwarnecke@icsbestway.com Ryan Wesselschmidt Husqvarna Construction Products ryan.wesselschmidt@husqvarna.com

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GPR Contractor Maps Out Clear Path for Hospital Project

Home Advantage

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Innovative Core Drilling Machine Aids Housing Construction Project

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CONCRETE OPENINGS MAGAZINE Official Magazine of the Concrete Sawing & Drilling Association Volume 24, Number 1 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

C O N T E N T S 12 World of Concrete 2015

Largest Show in Six Years Creates Excitement in the Industry

20 Concrete Openings Awards

Contractors Awarded During World of Concrete Ceremony

22 The Business of Business End the Internal Competition Today for Greater Success Tomorrow

34 Safety Counts

Respiratory Protection for Industry Contractors

38 Polished Perspective

The Architect’s Viewpoint: Specifying the Right Floor—Part III

44 Core Health

Too Sick to Work?

CONCRETE CASE CONTRIBUTORS Fred Engel, Jr. Dan Foley Jason Franken Chris Moore 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.

Cover Photo: the Doane Observatory, Chicago, Illinois.

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46 Tech Talk

Diesel Emissions—The Final Cut?

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

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Aiming for the Stars Observatory Renovated by Concrete Cutting

A CSDA member recently cut and removed approximately 100,000 pounds of concrete as part of a two-phase, $5.2-million renovation project at a planetarium in Chicago. The work involved creating several 9.5-foot-tall openings, some as wide as 6 feet, in the 14-inch-thick exterior wall of an observatory with a raked concrete finish.

Further precise cutting and removal tasks inside the cylindrical-shaped building were required to help transform it into a modern tourist attraction.

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The Doane Observatory was opened in 1977 at the Adler Planetarium on the shores of Lake Michigan. It has the largest aperture telescope available to the public in the Chicagoland area. With its 20-inch-diameter mirror, the Doane can gather over 5,000 times more light than an unaided human eye, allowing people to see celestial objects like the moon, planets, stars and galaxies that are trillions of miles away. As an active lakefront observing facility, the Doane Observatory is unique to Chicago and the U.S. Through a multi-phase transformation, the Adler Planetarium is creating a fully accessible plaza, ideal for daytime and nighttime observing, as well as special events.

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It was the job of a specialist contractor to cut four window and two door openings in the 14-inch-thick concrete wall of the observatory.

Window openings measured 9.5 feet tall and 3 feet wide, while the door openings were the same height but 6 feet wide. Beyond the exterior wall was an 8-inch-thick interior concrete wall that formed a hollow 12-foottall, 12-foot-diameter space in the center of the building. Half the circumference of this internal wall was to be completely cut and removed as part of the building’s renovation, allowing the space in the center of the A $1-million project was planned to renovate the Doane Observatory.

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The contractor created six openings 9.5 feet tall in the exterior wall.

A wall saw was used to cut through the 14-inch-thick concrete.

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building to be used. It was crucial that the top part of the structure, where the telescope rests, was not interfered with during the work. Any compromise to the integrity of the telescope or its surrounding structure could have caused damage to sensitive components. The general contractor, Troop Contracting of Willowbrook, Illinois, began a search to find a skilled cutting contractor to do the work.

“When we visited the site, we were told that the hollow center area of the observatory had been left untouched for over 38 years. This interior space had always been inaccessible to personnel because it was essentially a 20-foot-tall enclosed foundation wall/footing for the telescope on the upper level. The wall started 11 feet above ground level and extended down to meet the sloping grade of the site. So we were not sure what we would find in there,” said Dan Foley, President of CSDA member Cobra Concrete Cutting Services, Co. of Arlington Heights, Illinois. “We cored using a 5-inch-diameter bit with blind penetration to create an initial access opening. This allowed us to inspect the interior of the structure and verify the absence of water or gases prior to sawing. Fortunately, the area was free of fumes and had no signs of compromise from water.”

There was to be no wraps or trim installed around the door and window openings, and the tolerances for the surrounding caulk were tight. This meant that all cuts had to be smooth, clean and accurate as they would be part of the finished product. Given these requirements, and the stipulation that the telescope section of the building not be disturbed, the use of concrete cutting with diamond tools was the most suitable method. All cuts and openings were created with minimal noise and low vibration, which maintained structural integrity and kept the telescope safe from damage.

Work began in June, when the team from Cobra chipped off sections of the raked finish on the exterior wall. This provided a smoother surface

C O N C R E T E to mount a Husqvarna 482 HF wall saw fitted with a 32-inch-diameter blade. Angles were calculated and marked out so that the contractor achieved a square opening in the curved wall of the cylindrical structure, then slurry control and containment was set up to protect pedestrians using the nearby Seawalk pathway. Troop Contracting installed a temporary fence with sandbags placed around the base to contain runoff.

A cutting technician set up equipment at the first cutting location and made two 9.5-foot parallel vertical cuts at the specified width. The trackmounted saw was then positioned horizontally at the top, then bottom of the vertical cuts to create a rectangular cut section in the wall. The concrete section was removed from the wall before the team from Cobra moved on to the next location. This process was repeated until all six openings were made and the exterior work completed. A gas-powered chain saw from ICS and a K6500 ring saw from Husqvarna were used for some of the corner cuts.

Having created a series of window and door openings in the exterior wall, the contractor now had easier access to the interior wall of the observatory and more options for the removal of cut sections. Cobra had to calculate the measurements of the wall and plan to cut exactly half the circumference, making sure end cuts were at a 30-degree angle. Top cuts had to be flush with the ceiling, but cutting technicians found that the structure had steel erected on the outside. This was a problem, because

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the plan was to remove cut sections towards the steel. So Cobra had to work in reverse order—sawing and removing the bottom 10 feet first, then sawing and removing the top 2 feet to avoid damaging the steel and the wall that was to remain.

Cutting technicians cut the 20-foot length of 12-foot-tall, 8-inch-thick wall using the wall saw, taking three days to complete. All cut sections were safely removed from the work area using straps and a skid steer before being hauled from site.

The last task for Cobra Concrete Cutting Services was to cut and remove a 3-foot-tall, 8-foot-wide and 8-inch-thick section of wall on the second floor of the observatory before cutting a 3-foot square opening in the 6-inch-thick concrete floor. Some of this work was to be done 5 feet from the observatory’s telescope. Cutting technicians cut and removed the wall and floor sections in two days.

All sawing work was completed in a little over three weeks and produced around 100,000 pounds of cut concrete sections. All pieces were hauled from site by the contractor’s Ford F650 Dumpbody. The project was completed on time and within the agreed budget between Cobra and the general contractor.

This job presented Cobra with some challenges. While the exterior wall of the observatory building was cylindrical, the interior wall was made up of 12 concrete sections that were positioned together at 30

The Doane Observatory Renovation Project In 2013, the Adler Planetarium announced plans to undertake the first major renovation of the Doane Observatory.

Built in 1977, the observatory houses one of the nation’s few science-quality telescopes located in a major city, and at an institution dedicated to engaging the public in science.

The lack of public space and the inability to open the observatory independent of the main building significantly limited how the museum served 21st-century audiences.

Adler Trustees launched a campaign to raise $5.2 million for the first renovation of the observatory since it opened 38 years ago.

A two-phased funding and renovation effort, the Adler broke ground on the first phase in May 2014 and the initial $1-million modernization project was complete in November. The renovated observatory features a 600-square-foot gallery and lab space to support expanded visitor access and private events. It also serves as a dynamic workspace for the more than 700 teenagers the museum engages each year in hands-on science, technology, engineering and math (STEM) experiences.

Fundraising for the second phase of the renovation will continue through 2016, with the goal of securing an additional $4.2 million to transform the observatory into a public lakeside destination offering regular public observing opportunities, hands-on youth programming and an unparalleled special event space. For more information, visit http://www.adlerplanetarium.org/doane-observatory/.

Half the circumference of the interior wall was cut and removed.

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Approximately 100,000 pounds of concrete were removed from the site.

degree angles. This meant using different techniques and calculations to ensure the work was completed within the specified tolerances. The exterior wall had a 1.5-inch-deep raked finish, requiring each mount location to be chipped flat prior to setup. In addition, this raked finish was approximately 10 degrees out of plumb, which meant the wall saw had to cross several ribs to keep each 12-foot vertical cut square and within specifications. Cutting speed and depth were crucial to maintain true and square cuts.

Initially, there was no access to the interior of the structure so a 9.5-foot-tall by 15-inch-wide access hole was made in the middle of one of the proposed window opening locations. All measurements for the cutting work were then rechecked from the inside. Once inside the structure, the interior was found to be flat, 4 feet below exterior grade. An additional scaffold was erected inside and a Husqvarna K6500 HF ring saw fitted with a 0.235-inch-thick blade was used to chase the wall saw cuts from the back side, reducing chain sawing footage. Cut sections from the interior walls had to be removed through the exterior window openings without damaging any of the remaining structure. The team from Cobra lined the interior areas of the openings with lumber for buffer protection. Because the work area slopes downhill towards a seawall with active pedestrian traffic, a rubber track skid steer was used to increase mobility and decrease impact on existing landscape and sod.

Foley was extremely pleased with the outcome on this project. He explained, “As a subcontractor on the project, all layouts and instruction were given to our two-man team prior to cutting and removing. Some days we had an additional person to help with the removal of heavy concrete pieces with a machine. Troop Contracting was on-site to provide day-to-day instructions on which openings were to be cut and when specific cutting procedures were to take place. The project REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM

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was handled in a timely and safe manner throughout, which is of great importance to everyone at Cobra. The final outcome was a success and people from all over the Midwest and country can now experience this new space at the base of the telescope.�

The new Doane Observatory at Alder Planetarium reopened to the public in November 2014 and fundraising has already begun for further renovation work at the site. Based on the success of the observatory job, this cutting contractor is anticipating more work from Troop Contracting.

COMPANY PROFILE Cobra Concrete Cutting Services, Co. has been a CSDA member since 2002 and is based in Arlington Heights, Illinois. The company has been in business since 1999 and has 50 employees and 35 trucks. Cobra offers the services of core drilling, wall sawing, wire sawing, flat sawing, curb sawing, selective demolition, excavation, skid steer services and ground penetrating radar. The company is a CSDA Certified Company and employs CSDA Certified Operators.

RESOURCES General Contractor: Troop Contracting, Inc. Sawing and Drilling Contractor: Cobra Concrete Cutting Services, Co. Arlington Heights, Illinois Phone: 773-775-1111 Email: danfoley@cobraconcrete.com Website: www.cobraconcrete.com Methods Used: Wall Sawing, Hand Sawing

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World of Concrete 2015 Largest Show in Six Years Creates Excitement in the Industry

The tagline for this year’s World of Concrete (WOC) trade show and exhibition encouraged industry professionals to “Take a Closer Look.” Judging by the reactions of those who made the trip to Las Vegas, they were happy with what they saw. Almost 56,000 people walked the exhibits at the Las Vegas Convention Center (LVCC), representing a 15% increase in attendance from 2014.

Not only was there an increase in attendees, but exhibitor numbers and booth space were also larger than last year. WOC 2015 included 1,459 exhibiting companies covering more than 675,000 net square feet of space—a 16% increase in exhibitors and an

additional 100,000 square feet of booth space. The other positive news was that the show’s seminar program saw a 23% increase in participation.

With double-digit growth in several areas, the 41st WOC has been confirmed as the largest show in six years. Often seen as a key indicator for the coming year, all in the industry should be feeling confident about what lies ahead for the rest of 2015.

The Concrete Sawing and Drilling Association (CSDA) has been a cosponsor of

WOC for 39 years, supporting the show by promoting attendee registration, exhibiting, sponsoring seminars and events, scheduling training and certification classes, holding Board meetings and arranging networking events. This year, CSDA manufacturer, distributor and affiliate members filled close to 40 WOC exhibit booths while a large number of contractor members walked the exhibit halls and volunteered their time at the CSDA booth.

What’s New? Hilti unveiled details of its latest diamond tool range, Equidist, which uses new technology to precisely place and evenly distribute diamonds in core bit and blade segments. The Equidist range of pre-sharpened core bits range from 1.375 to 24 inches in diameter.

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GDM Technologies has also introduced a new air-powered handsaw, the Handicut GT. This saw weighs less than 16 pounds and can be used flat, vertical or upside down without fumes, oils or spills. Another product to incorporate “clean” power is Stihl’s TSA 230 Cutquik cut-off saw, which runs off a 36-volt lithium-ion battery. The first of its kind, the TSA 230 weighs 8.6 pounds and is suitable for making shallow cuts in concrete.

Selective demolition contractors had the opportunity to see the redesigned Brokk 400 during the show. This 11,240-pound machine has a 30-kilowatt electric motor and can reach 22 feet horizontally with 773 foot-pounds of hitting power. The new Brokk 400 also features a bigger drive axis, rollers and sidetracks plus a hydraulic quick-hitch system.

In terms of concrete scanning and imaging solutions for renovation and demolition projects, GSSI demonstrated the abilities of its recently launched SIR 4000 ground penetrating radar (GPR) control unit. This new model incorporates an IP 65 rated impact resistant design and a

Meanwhile, Diamond Products displayed its new line of H.D. Orange Maxx diamond blades. These blades feature heat isolation slots in the segments that keep the blades cool during high speeds and are available in sizes from 10 to 20 inches in diameter.

Elsewhere at WOC, attendees witnessed the launch of new offerings for handheld concrete cutting. ICS introduced the 701-A, a 6.5-horsepower pneumatic-powered chain saw that is 20 inches in length and weighs 29 pounds.

casted aluminum chassis with a 10.4-inch high definition LED display. The SIR 4000 is also capable of Wi-Fi enabled data transfer.

Close by, Sensors & Software showed attendees how its new Conquest 100 system has been designed for the rapid grid collection and processing of GPR data. It has a high resolution touchscreen display and Wi-Fi connectivity for the identification of hidden objects and the transmittal of captured data.

What Was Learned?

While attendance for the WOC seminar program increased, CSDA also had increased participation for one of its three show-based training classes. The association’s Estimating class had 25 students—an increase from 18 in 2014.

Launched in 2003, Estimating covers the function of an estimator in the concrete cutting industry and has graduated 235 students to date.

Rick Norland, the association’s lead training instructor, gave a 90-minute seminar on Maximizing Efficiency of Concrete Structure Modification/Demolition.

Attendees learned how to strategically combine impact breaking and crushing with concrete sawing and drilling techniques to maximize efficiency of removing or modifying concrete structures. For those who missed this seminar, Norland will give an encore presentation during CSDA’s 43rd Annual Convention & Tech Far, Mar 31 to April 2 in St. Petersburg, Florida. For more information, visit www.csda.org or call 727-577-5004.

Also at the show, the CSDA Board of Directors held an open meeting to discuss business and review the association’s accomplishments from last year.

Another open event was the CSDA Next Generation reception, which drew a good crowd for the second year running and gave up-and-coming industry leaders the chance to network with peers. Look out for these events reappearing on CSDA’s schedule for 2016.

The 42nd World of Concrete will be held February 2-5, 2016 at the Las Vegas Convention Center. Based on the success of this year’s show, it is suggested that those in the concrete construction and demolition industry keep their schedules free for what should be an exciting and important World of Concrete 2016.

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Redbank Creek Dam Renovation Diamond Tools Used to Cut Massive Structure Down to Size

The 152-meter (498.7-foot) long Redbank Creek Dam was in need of repair.

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Operators core drilled six access holes through the 2.8-meter (9.2-foot) thick dam face.

Following several studies, it was found that a large dam in New South Wales, Australia, did not satisfy current acceptable safety criteria. Seven semi-vertical cracks transverse to the horizontal dam axis had formed, extending from the crest to the base of the dam. The average distance between the cracks was approximately 16.5 meters (54.1 feet). A plan had been devised to shorten, strengthen and repair the dam, so a specialist concrete cutting contractor was needed to help complete the project safely and efficiently.

Redbank Creek Dam is a gravity arch dam with a maximum height of 16 meters (52.5 feet) from the foundation and a crest length of 152 meters (498.7 feet). The radius of curvature at the upstream face of the dam wall is 77 meters (252.6 feet). The dam was constructed between 1897 and 1899 as a water supply for the town of Mudgee. It was constructed without any contraction joints (vertically in the upstream downstream direction) and was constructed essentially in continuous lifts across the dam.

The vertical cracks are believed to have formed soon after the dam’s construction and were reported as early as 1909. It had been suggested that the cracks were due to both drying shrinkage (water loss from the concrete after placement) and as a result of temperature variations (cracks close and open with changes of temperatures and with the absorption or loss of moisture by the concrete).

The movement of the cracks were monitored, with their maximum openings occurring during winter with low water levels.

Studies from the Water Authority of Western Australia and GHD Engineering found that the dam had a deficient spillway discharge capacity and an inadequate factor of safety against sliding, even for the normal operation load case (reservoir at full supply level). Despite this, the dam had stored water to the existing crest level and passed floodwaters over the crest without failing or showing significant signs of distress.

In 2008, Australia’s Department of Conservation developed a detailed design for stabilizing the dam. The design included cutting off 3.8 meters (12.5 feet) from the top of the existing crest, the provision of a drop inlet spillway to lower the full supply level, the installation of 21 post-tensioned sub-vertical cables on the downstream face of the dam and nine cables at the crest of the dam. The

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Vertical wire saw cuts measuring 9 meters (29.5 feet) in length took six hours to complete. plan also detailed the provision of foundation drains, a waterproofing system and a new slab at the toe of the dam to protect against foundation erosion. The grouting of six vertical cracks and repair of all other cracks and cavities was also part of the project. The Melbourne office of Leed Engineering was awarded the overall contract in July 2013 with the shortening of the crest to commence three months later.

CSDA member Super City Concrete Cutting of Ocean Grove, Victoria was invited by the general contractor to provide a practical and efficient method for the shortening of the arch dam over a period of just 27 days.

Ultimately, two methods were considered. The first method involved making nine vertical wire saw cuts from the crest of the structure to the required level, some 9 meters (29.5 feet) in length. A horizontal cut would also be completed through the length of the dam structure to a depth of 2.8 meters (9.2 feet). On completion of the sawing work, a D12 dozer would attach a drag line to the individual sections and pull the section over onto the upstream creek bed.

The second method reduced the amount of wire sawing required by only sawing the right and left vertical abutments, in addition to the horizontal cut detailed in the first option. Leed Engineering would supply two 30-ton excavators with hammer attachments and hammer down the dam wall from the right and left abutments. It was decided that the second method was more practical and easier to manage. Both methods were achievable, but the chosen method had fewer risks as well as provided budget savings based on the reduction of diamond wire sawing and labor.

Diamond wire sawing was specified because it is virtually vibration free and would not diminish the integrity of the remaining structure,

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which was not reinforced and susceptible to additional cracking. In addition, Super City calculated a reliable work program based on the production rates of its diamond wire sawing system. Access was another contributing factor when specifying wire sawing, as this method can be set up in any number of ways even in hard-to-reach areas.

“Safety is always a big issue in these types of projects and can sometimes be overlooked when discussing deadlines and budgets,” said Alan Torrance, manager of Super City. “I have learned over the past 20 years, through trial and error rather than good fortune, that profit should never come before safety.

There were too many variables in the first method discussed that had the potential to cause injury, so it just wasn’t worth the risk. The agreed method didn’t compromise safety and achieved a practical result using similar plant and equipment.”

On award of contract, Super City hired a structural engineer to certify a custom access platform. It was designed using conventional aluminum scaffold planks, custom support frames with tube and clip hand rails. The system was modular and easy to erect with three operators. Two operators mounted the individual support frames to the downstream dam wall from a rough terrain boom lift. The third operator assisted from ground level by providing additional planks and hand rails as the platform progressed across the downstream face of the dam.

The access platform was repositioned three times across the 80-meter (262.5 feet) length of the dam face. Access to the horizontal cut line on the upstream face of the dam was more conducive in height, due to the natural buildup of sand and dirt that had washed down to the base of the structure over 100 years of operation.

Using a 4x4 vehicle loader fitted with an extendable work platform, the contractor commenced work on the upstream face.

Operators created six 51-millimeter (2-inch) diameter access holes at 16-meter (52.5) intervals through the 2.8-meter (9.2-foot) thick dam face using a Hilti DD350 core drill. This involved five separate relocations of wire sawing equipment along the upstream side of the dam to align with feed hole positions. Due to sloping ground conditions, a scaffold work platform was built to mount a Hydrostress SC diamond wire saw. This provided additional support and stability to the system and allowed greater flexibility for the mounting of universal and directional pulleys from Plattner.

The curved arch in the downstream face of the dam wall presented Super City with some challenges at the commencement of each new

C O N C R E T E setup. When the Tyrolit BSG 3 electroplated wire was tensioned ready to commence sawing, the middle section of wire would be some 1.2 meters (3.9 feet) off the downstream face. The cutting team rectified this issue by using timber sections to hold the wire in place and guide it to the cut line on the wall.

The first vertical cut was completed in six hours, during which time operators discovered how hard the quartz keystones really were. These keystones were at 1.2-meter (3.9-feet) centers along the axis of the cutline. The wire saw was set up at 45 liters (11.9 gallons) per minute with 100 bar feed pressure, providing a wire speed of 20 meters (65.6 feet) per second. Operators found that each time the wire passed through one of the quartz keystones, it would load up the unit over 150 bar, so operators had to be vigilant throughout the sawing process. On average, operators completed 45 square meters (484.4 square feet) of sawing in 12 hours. This equals 3.73 square meters (40.1 square feet) per hour.

On completion of the sawing work, Leed Engineering hammered down the structure using two 30-ton excavators. The dam wall was broken down and used downstream to help protect the river bed from erosion. This provided a considerable cost saving to Mudgee Council as the material was used on site and not required to be hauled away.

Super City operators did encounter a couple of issues that complicated the work. Due to the age of the structure, the first 75

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millimeters (3 inches) of the concrete dam wall was very soft and would not support conventional drop-in anchors. Operators drilled in epoxy 16-millimeter (0.6-inch) thread bars for both the core drill and directional pulleys for the wire saw system. This added an additional day to the program for the curing of the epoxy.

The six feed holes were completed in two shifts, mainly due to operators encountering very hard and very long pockets of quartz material. Some core samples extracted contained continuous quartz sections up to 800 millimeters (31.5 inches) in length, which decreased drilling speed from 6 centimeters (2.4 inches) per minute to 2 centimeters (0.8 inches) per minute. Based on the geotechnical report provided in the tender documents, operators knew that quartz—rated high on the Mohs scale of hardness—was present. However, the report did not clarify the size of rocks used to construct the dam so the exact quantity of quartz was unknown.

All cutting work was completed within the 27-day program, though some changes to working hours had to be made. Due to the additional time taken to cut through the quartz keystones, work was done on consecutive days. There were no financial penalties for running over, but Super City wanted to complete the work as agreed. This dedication to task was appreciated by the general contractor.

“Reviewing the work undertaken, we now have a better understanding of how fast diamond wire sawing actually is when

A custom-engineered work platform was tested and used for the work.

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The work was completed on time within the 27 day goal.

cutting through mass concrete structures,” said Patrick Maher, senior project manager for Leed Engineering. “Based on my experience with Super City on this project, I would have no hesitation in recommending the company for future works requiring diamond wire sawing and specialized demolition.”

Torrance had the following thoughts on the project, “I would like to say we were selected based on our experience in the industry and our ability to complete the work assigned. In reality, I believe the key driving force in any contract award is pricing and value-added services. Rather than racing to the bottom line to win the work, you need to diversify and offer other incentives that can enhance your bid and make the client take a second look at what you can offer.”

“On this occasion, we included a few other services that got us over the line for no other reason than it saved the client money. Deciding how much you wish to take off your bottom line to win the work is a challenge at best, so we find that offering more services at a value-added price is a better approach,” he concluded.

Super City’s work crew consisted of Torrance, Jason Franken, Steven Sherwell, Paul Murray and Stephen Johnson.

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

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COMPANY PROFILE Super City Concrete Cutting has been a CSDA member since 1999 and is also a member of CSDA Australia.

Based in Ocean Grove, Victoria, the company has been in business for 22 years and has a branch location in Darwin, Northern Territory. Super City offers the concrete cutting services of flat sawing, core drilling, wall sawing, wire sawing and hand sawing. The company has 20 employees and 20 trucks.

RESOURCES General Contractor: Leed Engineering Sawing and Drilling Contractor: Super City Concrete Cutting Ocean Grove, Victoria, Australia Phone: 61-352 488009 Email: supercity@bigpond.com Website: www.supercity.com.au Methods Used: Wire Sawing, Core Drilling

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2015. All Rights Reserved

C O N C RET E O P EN I N G S | 1 9

AWARDS Contractors Awarded During World of Concrete Ceremony CSDA hosted the second Concrete Openings Awards in the Las Vegas Convention Center during World of Concrete 2015 to recognize the most challenging and innovative projects completed by contractors in the past year.

The inaugural Concrete Openings Awards ceremony was held last year to showcase the best projects covered in CSDA’s official magazine and recognize the contractors who performed the work. This year, seventeen job stories were split into three categories and put before a panel of judges. The panel scored each job based on its pre-planning, use of innovation, degree of difficulty and quality requirements. The project with the highest score in each category was declared the winner.

“It was quite an honor to be part of the judging panel for this year’s awards,” said Ted Johnston, CSDA Past President and owner of Di-Tech International, Inc. based in Winnipeg, Canada.

“Revisiting these job stories and seeing the amazing work CSDA members do reminds me that we are in such a highly skilled industry. Congratulations to these worthy winners.”

These winning projects are just some of the innovative and complex jobs being done by CSDA contractors everyday on jobsites around the U.S. and beyond. The association encourages all concrete cutting, breaking, polishing and imaging members to submit their best job stories for publication in the magazine, and to consider entry to this year’s awards. Look out for more information about the Concrete Openings 2015 Awards later in the year.

To read any, or all, of these job stories in full, scan the QR Codes next to each winner. For more information about the winning projects, the awards or about CSDA, call 727-577-5004 or email rhitchen@concreteopenings.com.

And the winners are...

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From left to right: Marty Wooten, Catherine Rudder, Chase Rudder and Tim Rudder of IDS, Inc. Company:

IDS, Inc.

Location:

Montgomery, Alabama

Category:

Building Construction

This winning contractor performed over 18,000 feet of concrete cutting during the construction of a new 20-story luxury hotel and casino in Wetumpka, Alabama. The project involved the cutting and removal of approximately one third of an existing four-story reinforced concrete parking garage, so that it could be connected to the adjacent hotel and casino building.

The contractor used flat sawing, hand sawing and wire sawing techniques to cut 6-inch-thick slab decks, 3-foot-square beams, columns and four stairwells while core drilling pick holes on all four levels of the garage. Also, operators exposed and detensioned a number of cables post-tensioned to 25,000 PSI before the start of the cutting work.

CSDA member Jack Sondergard received the award on behalf of Mactech Offshore.

From left to right: Stu Fishman, Tom Penza, Nancy Walker, Art Swindell and Doug Walker of Atlantic Concrete Cutting, Inc.

Company:

Mactech Offshore

Company:

Atlantic Concrete Cutting, Inc.

Location:

Red Wing, Minnesota

Location:

Mount Holly, New Jersey

Category:

Industrial Renovation

Category:

Infrastructure Renovation

A major independent oil and natural gas exploration and production company contracted Mactech to cut and remove six 30-inch-diameter concrete-filled steel piles from one of its off-shore platforms. The platform was to be removed from the Gulf of Mexico as part of a strategically planned decommissioning project after the well ran dry.

The steel casing of the piles was 1.5 inches thick and helped secure the platform jacket to the sea bed. Due to federal regulations, the piles had to be cut 15 feet below the sea bed.

The company engineered an articulating wire saw system for subsea and topside cutting.

Adjustable guide arms clamped around the piles and the diamond wire ran through a series of pulleys on the unit. Needing only 2 feet of clearance around the object being cut and having the cut set at the bottom of the saw, there was no need for extra dredging.

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In the case of this winning project, the contractor was faced with the challenge of diamond core drilling 23,680 holes in the concrete bed of one of the busiest rail networks in the U.S. The 1.75-inch-diameter holes had to be precisely drilled for the replacement of direct fixation fasteners and the installation of new track anchor bolts.

Because of tight deadlines, a creative solution was needed to increase productivity and successfully complete the project on time. It came in the way of a new piece of innovative equipment. Engineers designed and fabricated the LIRR Railcar, which housed four, six-speed core drills outfitted with 10-horsepower motors.

The contractor was able to drill four holes simultaneously in the rail bed at speeds of 3,000 to 3,200 RPM in just 90 seconds.

C O N C RET E O P EN I N G S | 2 1

THE BUSINESS OF BUSINESS

End the Internal Competition Today for Greater Success Tomorrow

By Mark Eaton

T

he difference between a group and a team. In the NBA, when a player on a basketball team is playing for himself rather than the team as a whole, failure is eminent. In business, when a key player in the company has an “I” mentality, it’s only a matter of time until failure creeps into the organization.

In any group endeavor, success is not about discipline—it’s about teamwork.

Without teamwork, people don’t cooperate, collaborate or innovate.

Unfortunately, corporate America has created a great deal of confusion around the

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concept of teamwork and how to create a team. Professional basketball teams are not confused. They know what they have to do and they do it. Now it’s time for businesses to do the same.

The fact is that many employees have a sense of “I have to look out for myself.”

People think they have to constantly defend themselves and watch their space. As such, they’re more concerned about their own status or wellbeing than where the company is going, what the company’s goals are and how those goals are going to be met.

As long as people are focused on the internal competition and are using all of their energy in that direction, the company won’t go far. Sure, the organization might make some short-term gains, but over the longterm the losses will outweigh any success.

In basketball there’s a saying that no one cares if you score thirty points a night on a losing team. Think about how that saying holds true in business. If your company is going downhill fast, who cares about any short-term profits? As long as you’re just looking out for yourself and trying to just beat

your teammates, you’re going to lose the biggest game out there. You’re not going to be a star at the top of your industry.

Success only comes when you play as a team. When you’re focused on the internal competition—on what this person is doing or what that person said—you have a team that’s divided. Like an internal cancer, divisiveness kills an organization and drains company profits. The key is to end such internal competition and get everybody aligned with “this is where we’re going.”

Once that happens, the individual accolades will follow.

If people on your team just can’t seem to get past the “I” mentality—if they can’t stop asking, “Why should I help these guys? What are they going to do for me?”—then it’s time to create a mindset shift in your organization.

The following suggestions will help.

CREATE A TEAM PHILOSOPHY Management has to embrace a team philosophy that if everyone pulls together, everyone will get what they want. An employee or manager’s value is directly related to the success of the company. Who wants to promote someone from a losing department? You want to advance? Make sure those around you advance. They then have to reinforce that philosophy on a daily basis. Communicate the team philosophy on a regular basis and also meet with staff individually to explain how adopting the corporate goals and values will help them as well. Make it real. People want to help but often lose the personal connection in the midst of too much bureaucracy and focus on just hitting numbers. Remember, this is a behavior and a mindset that takes time to turn. It’s a lot like turning a battleship—slow and steady progress gets you to your goal.

Yes, it’s a new direction, but it’s one that can inspire teams to perform at levels greater than they knew possible. It’s a philosophy that’s well worth the effort to put in place.

ways: Take everyone out to dinner once a month, engage in a team building retreat, start a company softball team…do anything to get everyone out and together as one unit. Create the scenarios and language that reinforces the team concept. You may hit some initial resistance but keep pushing.

Team spirit does not just happen, it must be nurtured. And don’t always talk shop during these social gatherings. You will find that creativity will flow much better in the days following the events, when everyone is feeling more connected.

GET TEAM MEMBERS TO COMMIT TO OTHERS CONSCIOUSLY AND VERBALLY Once you have your group feeling good about the team, the next step is to ask for a greater commitment to each other and to the corporate values. This is critical to gain momentum. When everyone is connected, there will be an opportunity to take the conversation to the next level. Plan this ahead of time and get everyone to sit and discuss what the next level would look like and how to get there. Also discuss what the individual benefit would be to a part of

the team. Remember that not everyone is focused on money or career advancement.

For many folks, gaining a greater sense of job satisfaction may be the missing link. Once there is consensus on the goals and benefits of operating as a team, ask for their promise in writing. This will give you something to refer back to when there are breakdowns.

Most breakdowns occur because the team philosophy has been lost along the way. By reminding people of their promises and the benefits of team, balance can be restored.

And that is the difference between a group of people and a team!

Mark Eaton is a business speaker and coach who works with organizations and individuals sharing the four commitments that bring about teamwork, breakthrough success and sustained cultural change. His journey from auto mechanic to record-breaking NBA player, combined with his practical strategies and principles, help organizations succeed in the business world. Eaton will give the keynote presentation at CSDA’s 43rd Annual Convention & Tech Fair in St. Petersburg, Florida, March 31, 2015. He can be reached at mark@7ft4.com or by visiting www.7ft4.com.

INSTILL A SENSE OF CAMARADERIE AND TEAM SPIRIT You can’t have a true team if everyone always stays to themselves in their office and only interacts with each other during weekly meetings. In order to consistently reinforce this sense of team, you need to have everyone come together for some group time. You can do this in a variety of

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Safe Passage GPR Contractor Maps Out Clear Path for Hospital Project GPR technicians were contracted to scan areas at a hospital for the installation of electrical light poles.

T

his past November, the Tampa, Florida branch of Ground Penetrating Radar Systems, Inc. (GPRS) was contacted by a large electrical and lighting contractor to perform over 4,000 feet of underground utility locating at a large veterans hospital in St. Petersburg. The contractor planned to install a new network of light poles throughout several parking lots and along some of the roadways in and through the hospital grounds.

It was understood that during the course of conduit and pole installation, the electrical contractor would come in contact with several known and unknown underground utilities. Therefore, a specialist imaging contractor was required to discover and correctly identify any potential hazards beneath the surface. This would limit project down time, save money on repair cost and ensure the safety of all personnel working on the project. The increasing utilization of GPR imaging

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services by specifiers is helping avoid jobsite issues that can hinder project completion.The electrical contractor contacted CSDA member GPRS to perform a comprehensive underground utility locate before beginning the light pole installation work.

Two team members from GPRS mobilized to perform the requested utility locating work. The technicians utilized the company’s GPR equipment, specifically a Geophysical Survey Systems, Inc. (GSSI) SIR 3000 Head unit coupled with a 400 MHz antenna. In addition, a piece of electromagnetic tone induction equipment was used to perform this locate. These units were mounted on three-wheel carts so that they could be easily moved around the site and over different materials like soil and asphalt. The technicians identified the unknown utilities, mapped the direction of travel, plotted the approximate depth of the anomaly and finally, double checked findings to ensure accuracy. “Many contractors are now utilizing non-destructive testing to determine the location of known and unknown hazards on their job sites. GPR, along with many other non-destructive testing methods,

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Equipment was used to discover and identify hidden objects and utilities under the surface.

is commonly used to determine the location of underground utilities as well as embedded objects in concrete prior to construction,” explains Chris Moore, branch manager for GPRS in Tampa. “Contractors have learned that this type of testing and locating can not only save them time and money incurred through repairs, shutdowns and outages but, more importantly, help keep all personnel on their jobsites safe. Safety continues to be the number one concern for any contractor. As more and more companies establish themselves to provide this type of testing the industry, as a whole, increases its safety record.”

The first step for the imaging team was to walk the job to determine and present safety concerns or issues that may be encountered during the utility locating process. For the technicians, analyzing the jobsite and scan areas can help them learn more about what may lie below the surface and is often one of the most important parts of the process. This provides an opportunity to learn key information that may help with the interpretation of GPR data and complete an accurate utility locate.

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Water Line

Electrical Conduits

Underground Utitlities

Examples of grid scans taken during the project. The arrows—added at a later date—point to typical anomalies found by GPR like underground utilities.

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The scan areas included parking lots and roadways around the site.

With all surveying tasks completed, the team from GPRS set up to begin the imaging and scanning work. The directional boring path was marked on plans provided by the lighting contractor and also discussed in the field. The scanning and locating process followed the planned boring path, crossing two large parking lots and ran along hospital roadways. Technicians were able to scan between 300 and 400 linear feet per hour. In total, the team from GPRS spent approximately 12 hours on site over a two-day period. All areas were imaged and scanned using both the GPR and electromagnetic tone induction equipment. A standard grid pattern was used, with scans placed on 10-foot centers, to ensure maximum efficiency without sacrificing critical accuracy. GPR data was interpreted in real time. All hazards and utilities identified during the imaging work were marked on the surface using colored spray marking paint and pin flags in accordance with government regulations.

Once all specified areas had been scanned, technicians returned to locations where utilities and anomalies had been identified. These locations were double-checked to confirm the equipment’s findings and reactions from the first pass, and to record the precise point where anomalies were found. Steps were also re-traced to ensure markings were clear and provided accurate indications of depth, as per the electrical contractor’s request. All GPR data was documented and pictures taken of all findings.

The documented data was put before the electrical contractor and explanations of the findings were provided. While this would seem like a common sense task, this critical part of the job process is often overlooked or taken for granted. Moore explains, “We have learned that 80% of utilities struck following a locate of this magnitude are due to a lack of communication or miscommunication. We strive to clearly and articulately explain our findings while walking the scan areas with our project contact.”

In total, GPRS spent two days on site with two scanning technicians and performed several thousand feet of GPR imaging and utility scanning work. The company’s utility locating capabilities helped keep the project on time and on budget. Furthermore, no issues or concerns have been reported by the electrical contractor since the scanning work was completed.

“Overall we were very pleased with the project. Our technicians average about 280 individual projects such as this per year and maintain

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Spray marking paint and pin flags were used to identify objects discovered by the scanning equipment.

our core values of honesty and integrity to provide a consistent, valuable service to our customers,” concluded Moore.

By utilizing technology associated with GPR imaging and utility scanning equipment, the light pole installation project at the hospital was able to proceed as planned with hidden objects and hazards clearly identified. No lengthy, intrusive or destructive testing was required.

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

COMPANY PROFILE Ground Penetrating Radar Systems, Inc. was established in 2001 and has been a CSDA member for two years. The company is based in Toledo, Ohio with branch locations in 40 cities across the U.S. GPRS, Inc. currently has 85 trucks, 85 technicians and offers the non-destructive testing services of ground penetrating radar and utility scanning.

RESOURCES General Contractor: E.C. Electrical Contractors, Inc. Imaging Contractor: GPRS, Inc. Tampa, Florida Phone: 321-331-2127 Email: chris.moore@gp-radar.com Website: www.gp-radar.com Methods Used: GPR Imaging

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Home Advantage Innovative Core Drilling Machine Aids Housing Construction Project

Over 900 core holes were required at a new housing development site.

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When faced with the challenge of creating over 900 concrete openings for a new housing development in Philadelphia, Pennsylvania, a cutting contractor came up with a piece of equipment that could complete the work without placing operators in areas with limited access.

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the site had over 100 area drains, not including roadway inlets. These drains were also connected to the new storm system. In all cases, the holes were made in deep trenches with limited access and through thick concrete encased piping. The site utility contractor enlisted the help of its subsidiary company and CSDA member EXCO, Inc. to perform the core drilling work.

“With so many holes to core drill in deep excavations, and into sewers encased in concrete, I calculated that ‘traditional’ coring methods would have more associated costs and there were some concerns about operator safety,” explained Fred Engel, Jr., project manager of EXCO, inc. “At each drilling location we would have needed a crew to lower all the necessary tools and equipment into the trench, then there would be setup time to anchor the base unit to the concrete

Holes in concrete piping measuring 6 to 14 inches in diameter provided connection points for new sewer and storm water systems.

Site utility contractor MECO Constructors, Inc. of Bensalem, Pennsylvania was awarded the contract to perform all site work associated with a new 55+ housing community called The Arbours at Eagle Pointe. The site is over 50 acres and consists of over 400 homes, condominiums, a community center and more than 15 acres of open space. The community was built on the site of an old psychiatric hospital, so updates to some of the existing infrastructure was part of the work.

The major challenge associated with the project was the installation of a new storm, sanitary and domestic water infrastructure system to accommodate the proposed housing development. The new infrastructure was designed to accommodate the Philadelphia Water Department's "piggyback” system. In this system the sanitary sewer, typically a vitrified clay pipe, is installed first and encased in concrete.

Then the storm sewer piping, which can be various sizes of reinforced concrete pipe, is installed on top of the previously installed sanitary piping. The storm piping is then cradled in concrete to approximately the spring line of the installed storm water piping.

The City of Philadelphia required that any holes placed in its sewer system for lateral connections be cored holes. To make use of the existing underground lines and install the new piggyback system, over 900 holes were required measuring between 6 and 14 inches in diameter through piping between 8 and 15 inches thick. Each of the 400 new homes needed at least two cored connections—one for sanitary and one for storm—plus approximately 25 acres of common ground on The holes were below ground level in areas with limited access.

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A portable coring system was engineered and attached to an excavator.

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unit could be oriented perpendicular to the drilling surface. It was designed to drill holes up to 15 inches in diameter up to 18 inches deep.

The system was attached to arm of an excavator and positioned at the marked drilling location, with the excavator providing stability during the coring process. By having the system attached in this way, the work was done a safe distance from the contractor’s team and other site personnel. This reduced the chances of operators being injured by debris and decreased exposure to silica.

Using the KwikCore system, one operator was able to create over 30 core holes every eight-hour shift. The anchorless core drilling attachment helped the cutting contractor complete this particular phase of the overall project well within the allotted schedule, which was calculated to be close to $1 million worth of savings in the budget.

“We spent a lot of time developing this idea, so were thrilled when the system came through for us on this large project,” added Engel. “The coring work was completed without having to literally send our employees into the trenches and drill in a difficult environment with several potential hazards.”

EXCO, Inc. has gone on to utilize the KwikCore system on a number of other projects and has obtained the patent for it. This innovative design gave this cutting contractor the home advantage on a challenging job.

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

The machine operator created over 30 core holes per shift.

sewer and make adjustments. This is all before we would lower and mount the drill motor on the stand and attach a power source. We would then, of course, have had to reverse the whole process once the hole was made before moving on to the next location. It was at this point that I began working on a new coring system that was less labor intensive.”

What Engel and his partner Ed Lounsberry, the company’s master mechanic, came up with was a portable, anchorless core drilling system that could be attached to a demolition robot or excavator. This system was named the KwikCore.

Utilizing this new system, the contractor was able to greatly reduce the anticipated labor-intensive setup, breakdown and standby times for the work.

Powered by standard 115-volt electrical power, the system was connected by an umbilical cord to a remote control module with a connection included for a water supply to lubricate and cool the core bit. The system had a built-in stabilizer so that the

COMPANY PROFILE EXCO, Inc. has been a CSDA member since 2012 and is based in Bensalem, Pennsylvania, servicing the entire Philadelphia Tri-State area. The company has been in business for 43 years and has over 150 employees and 30 trucks. EXCO, Inc. offers the concrete cutting services of core drilling, flat sawing, selective demolition and is a full service site utility contractor.

RESOURCES General Contractor: MECO Constrcutors, Inc. Sawing and Drilling Contractor: EXCO, Inc. Bensalem, Pennsylvania Phone: 855-945-2673 Email: fengel@excokwikcore.com Website: www.excokwikcore.com Methods Used: Core Drilling

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C O N C RET E O P EN I N G S | 3 1

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SAFETY COUNTS

Respiratory Protection for Industry Contractors Taken from the CSDA Safety Handbook

W

hen employees must work in environments with insufficient oxygen or where harmful dusts, fogs, smokes, mists, fumes, gases, vapors or sprays are present, they need respirators. These health hazards may cause cancer, lung impairment, other diseases or death. Where toxic substances are present in the workplace and engineering controls are inadequate to reduce or eliminate them, respirators are necessary.

The primary objective of respiratory protection is to prevent exposure to air contaminated with harmful dusts, fogs, fumes, mists, gases, smokes, vapors or sprays, and thus to prevent occupational illness.

GENERAL A respirator is a protective device that covers the nose and mouth or the entire face or head to guard the wearer against hazardous atmospheres. Respirators may be: • Tight-fitting—that is, half masks, which cover the mouth and nose and full facepieces that cover the face from the hairline to below the chin; or •

Loose-fitting, such as hoods or helmets that cover the head completely.

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There are two major classes of respirators: 1. Air-purifying removes contaminants from the air.

2.

Atmosphere-supplying provides clean, breathable air from an uncontaminated source.

Employees should use provided respiratory protection whenever engineering and work practice control measures are not adequate to prevent atmospheric contamination at the worksite.

MEDICAL EXAMINATION Workers assigned to tasks that require respirator use must be physically able to perform the work while using the respirator.

A local physician or licensed health care professional (LHCP) will determine what health and physical conditions are pertinent.

The medical evaluation can be performed by a physician or other LHCP by using a medical questionnaire or by a medical examination that provides the same information as the questionnaire provided in

Appendix C of the OSHA standard (1910.134).

This evaluation must be done before an employee is fit tested and uses the respirator in the workplace. The employer must obtain a written recommendation from the LHCP for each employee’s ability to wear a respirator.

The evaluation shall be performed annually.

Fit testing and pulmonary functions tests shall also be performed prior to donning a respirator and annually thereafter.

RESPIRATOR USE 1. The correct selection, use and maintenance of respirators are essential for respiratory protection. Some points that the training shall cover are: • Types of hazards and specifics associated with those hazards; •

Types of respirators available to protect against the hazards;

•

Demonstrating the proper respirator donning procedures;

•

Explaining the various components of the respirator and how the respirator functions to remove contaminants;

•

Proper fitting of the respirator;

•

Limitations on the use of the respirator;

•

Maintenance and cleaning of the respirator;

•

Inspection for defects.

2. The wearing of contact lenses while using respirators should not be allowed.

3. In areas where the wearer or user, with failure of the respirator, could be overcome by a toxic or oxygen-deficient atmosphere, at least one additional person should be present. Communications (visual, voice or signal line) should be maintained between all individuals present. Planning should be such that one individual will be unaffected by any likely incident and have the proper rescue equipment to be able to assist the other in case of emergency.

4. Employees using air line respirators in atmospheres hazardous to life or health should be equipped with full body safety harnesses and safety lines, or other equivalent provisions. A standby attendant with suitable self-contained breathing apparatus should be at the nearest fresh air base or exit for emergency rescue.

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5. The safety director or designee will conduct frequent random inspections to assure that respirators are properly selected, used, cleaned and maintained.

CLEANING OF RESPIRATORS 1. The safety director is responsible for monitoring the training of the cleaning and disinfecting procedure. Employees

are responsible for cleaning, maintaining, inspecting and the use of the respirators.

2. Respirators should be cleaned and disinfected with warm water as frequently as necessary to insure that proper protection is provided for the wearer. The cleaned respirator should be stored in a re-sealable plastic bag, one per bag. The respirator should be stored in a single layer in such a manner as to prevent

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SAFETY COUNTS

continued

the rubber or plastic parts of the face piece from becoming distorted.

3. Respirators used by more than one employee will be cleaned and disinfected after each use.

4. Disposable respirators should be disposed after each use.

5. The respirator should be protected from dust, sunlight, heat, extreme cold, excessive moisture, damaging chemicals and mechanical damage.

INSPECTION AND MAINTENANCE 1. All respirators should be inspected before and after each use and during cleaning.

2. A qualified employee may be designated to replace parts on air purifying respirators.

3. Replacement parts for respirators shall come from the original manufacturer.

Substitutions of parts from a different brand or type of respirator will invalidate the approval of the respirator.

4. SCBA equipment should be returned to the manufacturer for repairs and adjustments.

5. Respirator inspection should include a check of the tightness of connections and the condition of the face piece, headbands, valves, connecting tube and canisters. Rubber or elastomer parts will be inspected for pliability and signs of deterioration.

6. A documented record should be kept of inspection dates.

EMPLOYEE TRAINING 1. Employees should be trained on the safe use, care and hazards associated with the use of the respirators prior to work assignments where air respiratory equipment may be required.

2. Training should occur at least annually or if the employee has not used the equipment in more than 6 months, then retraining will be required.

3. The training should be documented and include the employee’s name, date of training and type of respirators trained on.

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Brokk machines are light enough to work on weak floors, smart enough to take the stairs (or the elevator) between floors, and so productive that you’ll see the difference on your bottom line. On every project.

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The information provided in this article is taken from the CSDA Safety Handbook, a 96-page pocket-sized manual available in English and Spanish via the CSDA Online Store at www.csda.org.

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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POLISHED PERSPECTIVE

The Architect’s Viewpoint: Specifying the Right Floor—Part III

By Andy Bowman Parts I and II of this article were published in the September and December 2014 issues and focused on selecting the appropriate flooring system. Please refer to these print issues or visit the Past Issues section of www.concreteopenings.com

PREPARATION OF THE CONCRETE SURFACE As the industrial coatings industry has evolved, the importance of surface preparation has grown in importance. Just as the success of a paint job depends on surface preparation, so too does the success of concrete protection. Because of the way concrete cures, two conditions must be met before any coating can achieve a good bond with a concrete floor.

• The surface must be clean of dirt, chemicals and other contaminants.

• The surface must be given a mechanical etch or profile.

Surface profile can be described as the miniature ridges and valleys that give concrete the “tooth” or “profile” required to form a successful bond. Without a good profile, the chances of floor blistering or chipped coatings increase significantly, and the life expectancy of the floor is reduced.

Over the years, several methods have been developed to clean and profile concrete: • Cleaning and etching • Abrasive blasting • Scabblers • Scarifying • Shot blasting • Diamond grinding • High-pressure water jetting

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Cleaning and etching Acid Etching—Of all the cleaning and profiling methods, acid etching produces the lowest profile and is useful when the floor is going to be coated with a very thin system such as a clear urethane. The profile is similar to the roughness of 200-grain sandpaper. There is a widespread misconception that acid etching is the only process necessary to clean and profile concrete, but acid doesn’t remove coatings, dirt, oil, grease or fat from concrete surfaces. Thus, other surface preparation procedures are needed in cases where cleaning is required. All contamination must be removed prior to the application of acid to create a uniform profile. Hydrochloric acid (previously referred to as muriatic acid) is most commonly used for etching, but citric acid and some others can also be used. An average job of acid etching requires three or four workers.

Chemical Stripping—This method removes concrete coatings. If coatings on the concrete are layered or thick, more than one application of the chemical stripper may be needed to remove the coatings completely. The process of chemical stripping is relatively labor intensive, and produces a substantial chemical residue that must be disposed of properly.

Detergent Cleaning—Detergents remove dirt, oil, grease and fat from the surface of concrete flooring. Detergents are most commonly applied with powered floor scrubbing machines. The use of concentrated solutions results in higher

detergent consumption but insures the complete removal of grease and oil, unless they have penetrated down into the concrete.

Abrasive Blasting—Conventional abrasive blasting with sand is the dirtiest method of cleaning concrete floors because of the large volume of dust that gets into the air. Equipment must be completely masked and abrasive blasting typically requires a cleanup afterward. At the same time, however, abrasive blasting is very effective in creating a well profiled, uniform and clean surface to which concrete coverings can adhere. Wet abrasive blasting may be used to suppress dust.

Abrasive blasting can be used to lightly abrade the surface, or it can remove the top surface of the concrete altogether.

Scabblers—Air-powered units that use a number of small pneumatic hammers to pulverize the surface, thus providing an extremely rough profile for toppings and overlayments.

They are very effective at breaking up delaminated toppings and, in some cases, overtrowelled or crusty concrete surfaces. Dust generated by the scabbler can be controlled by applying water to the surface; however, clean

up of the surface must be thorough. Any pulverized material or sludge left on the surface can cause a bonding failure.

Scarifying—To scarify a surface means to scratch it. Scarifying machines scratch the surface of concrete to remove dirt, coatings, grease and sealers. Scarification is done with a rotating drum, which has hardened cutters that scratch or abrade the concrete until all surface contamination is removed and sound concrete is exposed. Scarifying can achieve a profile ranging from 60 grain sandpaper to 0.125-inch grooves.

Shot Blasting—Similar to abrasive blasting. However, the abrasive used is steel shot, which is mechanically propelled by a rotating blast wheel instead of by compressed air. The blasting process is contained within a housing and the abrasive is recycled continuously. The pulverized concrete and contaminants are collected by dust collector units, thus providing the advantages of an abrasive-blasted surface without the massive cleanup required with open air blasting. Shot blasting can be controlled through a wide range of profiles, from light brush blasting to removal of 0.25 inches of the top surface. Control is maintained by varying the size of the abrasive, the travel speed of the unit and the amount of abrasive thrown. All this illustrates the relationship of the different sizes of abrasive to the profile delivered.

Shot blasting is primarily known as an all-purpose, one-step cleaning and profiling method for concrete floors. It can efficiently clean materials such as dirt, grime, old coatings and embedded chemical contaminants. It also can be used in plants without the need for protecting sensitive equipment. Where there are not massive amounts of grease and oil on the floor, the recycled steel shot is cleaned sufficiently by the machine’s air-wash separator so that the grease and oil are not redeposited on the surface. During recycling, dust from the concrete acts as a drying agent on the oil and grease and helps clean the abrasive.

The shot-blasted surface is uniformly clean and profiled, readily accepting all coatings applied to it. In effect, a thin layer of the surface is blasted away, leaving essentially virgin concrete that will absorb the first coat of most systems.

The bond strength of coatings applied to shot-blasted surfaces has been measured

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

POLISHED PERSPECTIVE and found to be equal to the tensile strength of the concrete to which it was applied. Labor requirements for the shot blasting units are very low, thus providing lower overall surface preparation costs. Cleanup following the blasting process usually consists of sweeping the area with a magnetic broom to pick up any loose abrasive that might have escaped the blasting unit. Shot blasting is ideally suited for preparing surfaces for epoxy toppings and most coatings, but the cleaning paths can show through clear urethanes due to the graining effect and the overlap of succeeding passes on the concrete surface. This graining appearance, similar to what is seen when mowing grass, is produced by most mechanical surface preparation methods.

High Pressure Water Jetting—This is a recent innovation for cleaning and preparing industrial flooring for coating. Water jetting units generally use an engine-driven, piston pump to develop pressures of 15,000 to 25,000 PSI. The blasting is accomplished by hand-held wands or lances, and by units that have two nozzles attached to a rotating bar. The rotary unit, which looks something

continued

like a lawn mower, is used to create a more uniform surface finish. Water jetting has the advantage of controlling dust in the cleaning process. While it can create a profile, it is difficult to control the profile because the high-pressure water is very aggressive. In 1984, ultra-high pressure units were introduced for demolishing bridge decks and parking garages. These units are used in place of jackhammers for removing delaminated concrete and exposing reinforcing bars in slabs.

INSTALLATION OF THE FLOORING SYSTEM Once the flooring surface has been prepared to receive the coating or topping, the installation should be relatively simple and straightforward. However, it is important to recognize the following considerations.

Joints and Cracks Do not coat expansion/isolation joints.

Fill with the appropriate joint material, flexible or semi-rigid, after installation of the coating. Saw cuts, cracks or control joints can be filled and coated over in a temperature controlled environment.

Temperature 100% solids epoxies are dramatically influenced by temperature. Working time, cure time, viscosity (mixing & flow), air release, surface tension and pigment float will all be affected. These products work best at 70-85 degrees Fahrenheit in a combination of surface, product and air temperature. Outside of this range care will need to be taken to ensure success. For example, a 15-degree change in resin temperature (from 70 to 55) will more than double the viscosity of the product. The resin will still cure at 55, but mixing, flow, air release and pigment float will all be negatively impacted. A product temperature of 70 is ideal, but if placed on a 45-degree substrate it will not flow, release air or cure as hoped.

Dew Point The temperature at which moisture is converted from a gas to a liquid. Moisture will condense on a cool surface if the temperature is at or below the dew point and this can occur on an interior slab if the building temperature/environment is not controlled.

The moisture present can be enough to inhibit bond. To eliminate this potential, check the dew point. Do not coat if you are within 5 degrees of the dew point. If this is not possible, leave a fan running overnight in the room to be coated.

Moisture Vapor Transmission Coatings are the most likely resinous floor system to fail when excessive vapor is being transmitted from the concrete.

Use a calcium chloride test kit to verify the transmission rate before coating. If readings are above the acceptable limits, contact your coating supplier’s technical service department. If you are not familiar with these test kits, how to use them or what they mean, contact your coating supplier’s technical service department.

Mixing Drill speeds and paddle should match the volume to be mixed. The spiral type paddle works very well with coatings. Avoid a vortex due to paddle size or drill speed; this will whip air into the coating. Do not “pump” the paddle up and down. Quantities less than a gallon can be mixed by hand. In pigmented systems, and as a general practice, it is a good idea to measure off the curing agent/ hardener and put into the mixing container first. These materials are typically lower in viscosity and weight per gallon than the surface refining agent. They are very good

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POLISHED PERSPECTIVE

continued

wetting agents. As you add the surface refining agent, it will displace the curing agent/hardener, which will come to the top, coating the bottom and sides. The drill and paddle will now not have to remove the sticky refining agent from the sides and bottom of the bucket.

When you mix an epoxy you start a chemical reaction that is accelerated in mass. Mix no more than can be applied in 30 minutes.

Once mixed, dump the entire quantity on the floor. Product left in the bucket for several minutes will be at a different stage of cure than material first placed. This can affect flow, texture, air release and pigment float. The higher the viscosity of the material being mixed, the longer you mix. For an epoxy to cure fully, each molecule of hardener must find the appropriate molecules of epoxy resin to react.

As more and more connections occur, the remaining molecules have more difficulty finding each other.

Priming Good primers penetrate the substrate and provide a good bond site for the next application. They also reduce concrete out-gassing and provide some film build to reduce surface profile. Match your primer to the coating system. Most manufacturers make several primers for different conditions: low temperature, oily substrates, solvent or 100% solids, blush resistant, etc. As a general rule, use the fastest curing, low viscosity primer available. This combination works best to reduce out-gassing from the substrate.

Application As a general guideline, do not exceed 20 milliliters of “neat” resin per lift without the use of a filler. Most formulations work best at 8-12 milliliters. Thick films will be more brittle and have

4 2 | M ARC H .15

a tendency to hold more air bubbles. Without exception, the best results will come from applying the product with a flat squeegee and back rolling with a high quality short nap roller. A squeegee distributes the material evenly and is the most efficient in terms of time. It also insures the entire mix is curing at the same rate. If you cannot use a squeegee, pour the entire mix in a ribbon and roll in and out of the ribbon. Keep the roller fully wet, otherwise it will fill with air, which can end up as bubbles in the coating.

Recoat Window Follow the guidelines listed on the technical data sheet for the primer, fill resin or topcoat. Recoat windows will be impacted by temperature. A recoat window of 24 hours at 70 Fahrenheit will be reduced by several hours if installation temperatures were above 80. If in doubt, or you are at or beyond the recoat window, sand prior to coating. Do not recoat a solvent-based primer until the solvent has evaporated.

TO BE CONCLUDED… Read the fourth and final part of this article in the June 2015 issue of Concrete Openings.

Andy Bowman is the owner of Adaptive Concrete Innovations based in Rose Bud, Arkansas. He has 15 years experience of concrete polishing, has served on the CSDA Polishing Committee and is an instructor of the association’s Concrete Polishing training class. Bowman can be reached at 419-408-5906 or by email at bb@aciconcrete.net.

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Scan It. Cut It. Core It. C O N C RET E O P EN I N G S | 4 3

CORE HEALTH

Too Sick to Work?

By Erin O’Brien

T

he average U.S. employee takes 5.8 sick days per year, a number that probably seems too high to employers but pretty low to employees. There is a quiet battle between the two parties about the subject of ill time and this raises the question, how sick is “too sick” to work?

Colds and the flu are two of the main reasons for employees missing work, although other related illnesses and conditions can account for missed days. For the most part, a mild cold or minor allergy symptoms do not require complete rest, and the employee does not need to stay home. The important thing for employees to remember is that if, by going to work, the employee could make their condition worse, fail to do their job effectively, or risk infecting coworkers, staying home for a day or two is the best course of action. If an employee is feeling very sick, they are likely to have a hard time functioning and performing at their normal level. Also, trying to “push through” or “tough out” an illness can actually make a condition worse and prolong the amount of time an employee is sick. Going to work while contagious also increases the risk of infecting coworkers. If an employee is so sick that a doctor prescribes antibiotics or any controlled substance to control pain, the employee should stay home, especially if his or her job entails driving or operating heavy or dangerous equipment.

It is important to know the difference between a cold and the flu, however, and determine when it is preferable to stay home.

The flu is a highly contagious viral infection and employees should stay home during the

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worst of it. A cold, however, is usually less severe and may not require an employee to miss any time at work. Symptoms of a cold include a sore throat, headache, sneezing, congestion and coughing. These symptoms usually emerge gradually over a few days. A cold is contagious for the first two days after symptoms start. It is during the contagious period that a person is advised to stay home to recover to avoid infecting anyone else.

Occasionally, symptoms of a cold can include a fever, although it is usually low-grade (100 degrees F or lower). If the fever is above 100 degrees F (high-grade fever), the person should stay home until the fever subsides.

Similar symptoms can apply for the flu, where a high-grade fever is a common symptom.

Other flu symptoms include muscle aches, headache, runny nose, sore throat, cough, weakness and fatigue. Flu symptoms tend to be more severe and come on abruptly.

Employees should stay home during the worst days of the flu and can return to work 24 to 48 hours after their temperature has returned to normal.

Other illnesses and conditions that may warrant time away from work include seasonal allergies, sinus infections, pinkeye and staph infections. Seasonal allergies are most common in the spring, although they can occur during any time of the year. About 25 percent of the population has some type of allergy, whether it is to dust, mold, pollen, animal dander, insect stings and bites or other airborne irritants. An allergic reaction happens when a person’s immune system aggressively fights irritants that enter their system. These irritants are perceived by the immune system as dangerous and the resulting symptoms—sneezing, red, watery, itchy eyes, congestion, fatigue and trouble breathing—are the result of this attack. Typically, allergies do not require the employee to miss work, unless the symptoms become extremely severe, as they are not contagious. However, allergies can lead to sinus infections, which may result in missed time from work.

If allergic symptoms have lasted longer than a few days or are getting worse, a sinus infection is a likely culprit. In the case of a

CSU-201502-Concrete Open Isl Half_Layout 1 1/15/15 4:28 PM Page 1

sinus infection, it is recommended to see a doctor, who may prescribe antibiotics.

Symptoms of a sinus infection include green or yellow nasal discharge, nasal congestion, facial pain or pressure, fatigue, muscle aches, dizziness, headache or aching in the upper jaw and teeth. This sinus pressure and aching is what usually prevents an employee from going to work, as the pressure is so intense it can be painful just to open their eyes or move their head. The worst of the symptoms can last for two to seven days, although mild symptoms will likely linger for up to two to three weeks.

Sinus infections are not contagious, so in this case, the employee should use their best judgment in deciding whether or not to go to work.

Pinkeye, or conjunctivitis, can result from a viral or bacterial infection, allergies or environmental irritation. Symptoms of pinkeye include redness, tearing, itching, burning or swollen eyelids. If the cause of pinkeye is a viral or bacterial infection, it is highly contagious and the employee should stay home until the symptoms subside. Viral pinkeye will not respond to antibiotics, but the condition will improve on its own in three to five days. Bacterial pinkeye will respond to antibiotic eye drops and the employee can return to work 24 to 48 hours after starting treatment. Pinkeye caused by allergies or irritation is not contagious and employees can continue to work.

Staph infections are another type of highly-contagious infections. Staph infections usually present as an abscess or something that looks like an infected cut or insect bite. They are easily treated, as long as it is community-acquired (compared to hospitalacquired, which can be much more serious and difficult to treat). Early detection is key, as the longer the infection goes untreated, the worse it becomes. Treatment comes in the form of antibiotics and avoiding contact with the infected area. Methicillin-resistant Staphylococcus aureus (MRSA) is a more severe form of staph infection that is resistant to typical antibiotic treatment, as well as being highly contagious. In both cases, it is important to see a doctor and make sure the affected area is covered at all times to prevent spreading the infection. Employees whose job includes possible skin-to-skin contact with other employees should use caution to avoid infecting coworkers. Left untreated, staph and MRSA infections can lead to more severe complications.

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One of the most important things an employee should consider when deciding whether he or she are too sick to work is the welfare of their coworkers and the effect their illness will have on them. If the employee works in close proximity to several others, or is so sick that he or she is unable to function effectively at work, it is advised that he or she take a day or two to rest at home. Employees should follow the golden rule—treat others as they would like to be treated.

Erin O’Brien, MS, ATC is a Certified Athletic Trainer and Marketing Coordinator for O’Brien International, the association management company that manages the Concrete Sawing & Drilling Association. O’Brien received her Bachelor of Science degree in Athletic Training from Ohio University and her Master of Science degree in Applied Physiology and Kinesiology from the University of Florida. She is a regular contributor to Concrete Openings magazine. She can be reached at erin@csda.org or 727-577-5002.

C O N C RET E O P EN I N G S | 4 5

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.

Diesel Emissions—The Final Cut?

By Dan Marty

T

he latest emission regulations from the U.S. EPA, known as Tier 4 Final, are now in effect for all EPA classified diesel engine power categories.

However, we are still a long way from having all the dust settle on this subject in the concrete cutting industry. Many are still wondering “What effect will this latest round of pollution controls have on our operations and profits? Can these limits be met and how? Why they are necessary?” Let’s start with the last question first.

CLEARING THE AIR Diesel engines are one of the largest sources of fine particulate matter (PM)— particles so small that several thousand of them could fit in the period at the end of this sentence. Diesel exhaust also contains ozoneforming nitrogen oxides (NOx), hydrocarbons (HC) and other toxic air pollutants. In addition to environmental and possible climate effects, these pollutants can cause lung damage and aggravate existing respiratory diseases such as asthma and COPD. In the U.S., diesel engine emissions have been progressively regulated for almost 40 years. For most of that time, the regulations governed primarily on-highway engines in trucks and buses, but in 1998, non-road engines were also brought under the scope of these regulations. Canada enacted a parallel inclusion the next year, and established an agreement to align each of their standards with those from the U.S. in each succeeding tier. Similar standards were enacted in European and Japanese regulatory phases.

The inclusion of non-road diesel engines, which include construction equipment like concrete saws and hydraulic power packs along with other off-highway vehicles, was designed to capture a larger percentage of the remaining emissions in the face of diminishing returns from further on-road controls. However, the complexities of thousands of machine and operating variables for off-highway engines required an extended phase in period for

4 6 | M ARC H .15

Figure 1: U.S. EPA Non-Road Exhaust Emissions Regulations Used with permission of and provided by Capital Engine Company, a Kubota engine distributor.

19-56kW Tier 4 off-highway engine standards (2008-2012 Tier 4 Interim). The Tier 4 Final standards require emissions of PM to be further reduced by 90% and NOx/HC by up to 37% beyond the Tier 4 Interim standards.

In addition, the EPA created a Transition Program for Equipment Manufacturers (TPEM) program. This was created in an effort to provide original equipment manufacturers (OEMs) with some flexibility in complying with the regulations. TPEM allows the use of limited quantities of previous tier engines over a limited period of time in consideration of existing stocks of engines and the difficulties of producing and incorporating compliant engines in equipment designs. Participation in the program is voluntary, but most equipment manufacturers have needed this provision to cover some or all of their production in recent years. Participating OEMs and engine manufacturers who provide the non-compliant engines are required to keep records and submit reports of their activities under the program.

PICKING A PATH As the emissions standards have tightened, the methods used by the engine manufacturers have grown more complex and diverse. Nevertheless, most manufacturers achieve Tier 4 Final compliance by selecting all or several of the technologies from a common portfolio originally developed for on-road applications, often choosing different combinations for different power ranges and/or applications. The selections made by manufacturers impact equipment performance and operator experience, so it will be helpful to understand the basics of each approach. The latest emission reducing technologies include: Ultra Low Sulfur Diesel Fuel & Low Ash Oil A requirement for all Tier 4 engines (and thus a barrier to emission regulation in many developing countries), ultra low sulfur diesel fuel (ULSD) and low ash oil are essential to the sulfur-sensitive catalytic

Figure 2: Emission Improvement from Tier 1 to Tier 4 (19-37kW) 25-50HP)

Figure 3: Emission Improvement from Tier 1 to Tier 4 (37-56kW) 50-75HP)

Used with permission of and provided by McDonald Engine Company, a Deutz engine distributor.

Used with permission of and provided by McDonald Engine Company, a Deutz engine distributor.

processes used to minimize soot and ash particulates and NOx. Combustion Chamber Redesign Combustion chambers have been reshaped and rearranged to optimize in-cylinder combustion, promoting more complete burning of fuels while reducing NOx producing hotspots. While some engine manufacturers have revised existing engine platforms, others have resorted to clean sheet designs to meet Tier 4 Final standards.

EGR/Cooled EGR Exhaust Gas Recirculation, (EGR) used by most engine manufacturers to meet Tier 3 emissions, gets a boost from additional cooling to reduce combustion temperatures and NOx further while increasing charge density and power, albeit at the cost of increased heat rejection loading.

High-Pressure Common Rail Fuel Injection & ECM Introduced to meet Tier 4 Interim requirements, nearly all diesel suppliers now combine highpressure common rail (HPCR) fuel injection (up to 26,000 PSI) with an Electronic Control Module (ECM) and a network of sophisticated sensors to meet the stricter Tier 4 Final standards. HPCR fuel injection improves atomization and fuel mixing and ECM controls improve fuel efficiency and increase power while reducing HC, NOx and PM emissions.

ECM controls also provide added protection and convenience through safe operating control limits and on-board diagnostic tools.

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Exhaust Aftertreatments One, two or all three of the following methods can be combined to fine-tune the emissions remaining after the above modifications are implemented.

DOC A diesel oxidation catalyst (DOC) contains materials that oxidize unburned hydrocarbons when exhaust gases flow through it. DOCs are generally maintenance free, with a service life intended to match that of the engine.

DPF A diesel particulate filter (DPF) is designed to capture particulate matter from the exhaust flow. A DPF generally requires either active or passive regeneration to burn off collected PM with supplier specific operating and/or service requirements.

SCR Selective catalytic reduction (SCR) injects a urea and deionized water “reducer� fluid (DEF) into the exhaust flow to initiate reactions in a catalytic chamber that reduce NOx produced by high temperatures in PM optimized combustion.

DEF tanks need to kept clean and be refilled in proportion to fuel use.

AN ENGINE/EQUIPMENT SYSTEM Tier 4 Final engine changes required equipment manufacturers to significantly revise existing models. Engine compartments have been rearranged, become more crowded and in some cases expanded to fit new and/ or larger exhaust aftertreatment systems,

DEF tanks (where SCR is used), electronic control systems and component protection.

Re-specifications are due to higher operating temperatures and pressures, the inclusion of new or larger cooling systems that address increased heat loading and, in some cases, entirely new engine models that replace engine families discontinued due to non-compliance. Wiring harnesses have grown and become more sophisticated to accommodate more sensors and new control network protocols. Control panels have been similarly rearranged and expanded to include digital gages, informational display screens and electronic engine controls.

Recognizing that actual emissions are a function of the engine and the operating application, Tier 4 Final regulations uniquely cover not just diesel engines, but also the equipment in which they are installed.

For the first time, the OEM is required to certify and label equipment as complying with the latest EPA standards and certain engine installation instructions. OEMs must annually report and maintain records of all new and replacement engine installations, including engine and equipment serial numbers, assembly or shipping dates and shipping destinations, subject to selective enforcement audits and penalties up to $37,500 for each piece of equipment found non-compliant. There are separate enforcement provisions for equipment owners, repair centers and aftermarket parts suppliers as well.

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

T E C H TA L K

continued

CUT TO THE CHASE The implementation of Tier 4 Final engines in concrete cutting equipment will directly impact CSDA contractors. New equipment will be more expensive to purchase, more complex in construction and less forgiving of abuse and neglect in service. On the other hand, Tier 4 Final engines promise lower operating costs due to improved fuel efficiency, higher performance with extended service intervals and longer service life due to clean combustion. They also feature improved controls, accurate diagnostics for reduced downtime and preemptive operational controls and maintenance warnings. Furthermore, if work involves public sector jobs and/or jobs

for universities and other large organizations that have adopted Tier 4 standards, or if in a non-compliance zone that the EPA has determined has poor air quality, expect contract preference, and possibly the outright requirement, to be given to Tier 4-compliant machines.

Most normal concrete cutting operations will not be significantly affected, but integration of Tier 4 Final equipment into contractor fleets involves some important considerations.

They include: • Consulting with an equipment supplier to select Tier 4 compliant equipment that best matches operational requirements with the

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lowest total operating costs.

Familiarizing operators with the new technologies, controls, monitoring systems, new display symbols and alarms.

• Updating service parts and supplies to include low ash oil and any other items specifically required by new equipment.

• Ensuring equipment service providers are trained in the engine maintenance and repair requirements of the specific engine models and technologies being used.

The most important thing for owners and operators to remember is that Tier 4 Final engines and equipment (and associated serialized records) must be used and maintained in compliant condition and configuration. Contractors need to follow all operating and service instructions, using only compliant ULSD fuel, low ash oil, clean and dry DEF (if SCR is installed) and approved emission-related components for maintenance and repairs. This will help achieve peak performance, minimize operating costs and avoid costly shutdowns and penalties. Remember—employee health and the company’s bottom line depend on it.

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Our experienced, professional staff would like to provide you with more information about our Concrete Sawing, Drilling and Polishing Program. For complete program details, please contact Sandi Hoffman or Bob Elster. We also invite you to visit our website at www.apgen.com.

We look forward to hearing from you!

Sandi Hoffman, Ext. 16 Bob Elster, Ext. 17

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Dan Marty is the Equipment Engineering Manager for CSDA member Diamond

Business Automobile $1,000,000 Combined Single Limit

1-800-624-5829

www.dieselforum.org General info on off-road diesel engines, equipment, retrofitting, etc. www.clean-diesel.org Diesel fuel standards and timeframes. www.epa.gov/otaq/nonroad-diesel.htm U.S. EPA information and regulations for non-road engines.

www.apgen.com sandih@apgen.com bobe@apgen.com

Elyria, Ohio. Dan has been involved with concrete cutting and drilling equipment for the last three years, but has an extensive background in managing equipment product development engineering in the oil and gas drilling, lawn and garden, automotive and aerospace industries. He can be reached at 800-321-5336, ext. 230 or by email at dmarty@diamondproducts.com.

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INDUSTRY BITS CS Unitec Introduces New Rig-Mounted Core Drill CS Unitec’s EBM 352/3 PSA rig-mounted core drill is ideal for drilling up to 14-inchdiameter holes in concrete, reinforced concrete, asphalt and natural stone. At 77 pounds, the EBM 352/3 PSA has been described as the lightest drill in its class, featuring a powerful 20-amp hightorque motor and a rugged three-speed gearbox with drilling speeds of 230, 500 and 1,030 RPM. An internal oil pump lubricates the gearbox and shaft for longer life. The EBM 352/3 PSA features soft start, overload protection and a mechanical slip clutch protects it in case of jamming. The 39-inch-tall anchor stand features a quick-lock motor mount, positive locking knob and two 5-inch wheels for easy portability. It also includes a screw jack for bracing. The hand crank has an adjustable angle of up to 45 degrees and can be mounted on either side of the drill stand. The drill rig is made for heavy-duty concrete core drilling. The motor is mounted on a slide rack and can be removed from the stand in seconds, making it easy to transport the rig in two pieces to the jobsite. The EBM 352/3 PSA core drill motor can also be purchased with an anchor vacuum stand and vacuum pump (Model EBM 352/3 PSV).

ICS Releases New Line of Diamond Wire ICS is pleased to introduce the company’s next generation of diamond wire, specifically designed for the applications of cutting concrete, concrete with reinforcement and steel. ICS diamond wire is manufactured in a state-ofthe-art facility with precision specifications to deliver a high level of service, economy and performance. The offering includes sintered and electroplated wires.

The company’s sintered wire provides a proven and economical way to cut fast in concrete and concrete with light steel reinforcing. Beads are 0.4 inches in diameter and placed 1 inch apart from each other. The ICS electroplated diamond wire offering provides several options for economically cutting a wide range of materials from reinforced concrete to pure steel. It contains 40 beads per meter (3.3 feet) and can run at a wire speed of 22 meters (72.2 feet) per second. The proprietary design efficiently uses diamonds that are tuned for each unique application.

For More Information Contact: Jessica Gowdy Email: jessica.gowdy@blount.com www.icsbestway.com

For More Information Tel: 800-700-5919 Email: info@csunitec.com www.csunitec.com

New Hydraulic Power Pack from Wolverine Equipment Wolverine Equipment is pleased to announce two new additions to its line of hydraulic power packs. The new WP20.5 and WP-22 gas-powered hydraulic power packs are built on the company’s smallest frames for optional portability and maneuverability. With either a 20.5-horsepower or 22-horsepower Subaru engine, these units give users 10-12 GPM of flow in what Wolverine describes as the smallest packages on the market. Both models will produce a maximum pressure of up to 2,500 PSI. The power packs are suitable for powering a wide range of tools, including core drills, hand saws, chain saws and ring saws. The WP-20.5 and WP-22 are both built on a compact, maneuverable frame and weigh 330 pounds when fully loaded with fluids.

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

CSDA Member Engineers Angled Curb-Cutting Machine D-Drill Master Drillers—a concrete sawing and drilling contractor and CSDA member from Coventry, England—has introduced a device that can cut granite curb stones in situ to an angle, allowing cars, bicycles and other vehicles to mount the curb with greater ease. The Cyclpath has been devised by D-Drill managing director Julie White and her father, Peter, former owner of the business. The introduction of this new machine means that many traditional curb stones can now be cut while remaining in place, whereas previously these stones would have been replaced meaning road closures, excavations and disposals. The contractor was approached by a city council looking to angle a curb on a busy street because this was a popular drop-off point for hotels, restaurants and boutique stores. The Cyclepath allowed operators to make 45-degree angle cuts with a diamond blade and take the top corner off the curb. The angled saw motor is mounted inside a custom steel frame with wheels attached, so the machine can cut while it travels along. This was a cost-saving invention for the customer that helped prevent further damage to vehicles mounting and dismounting the curb.

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

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Wilson Born, 1938-2015 Industry professional Wilson Erwin Born of Macomb Township, Michigan, died peacefully on January 18, 2015 at the age of 76 following a long battle with cancer. He was the President of CSDA member National Research Company in Chesterfield, Michigan and attended many association events. Wilson was born August 12, 1938 in Cleveland, Ohio, a son of Harry and Caroline (nee Bailey) Born. On June 28, 1986, he married Myrna Gray. Wilson joined National Research Company in 1960 and took ownership Wilson Born of the company in the early 1970s. He was an intelligent, honest and hardworking man who enjoyed fishing and hunting, telegraph and stamp collecting, as well as all things history related. Wilson is survived by his wife of 28 years, Myrna; siblings Susan (Jack) Maas, Frederick (Brigitta) Born and Sara (Joseph) Alexanian; sister-in-law Bernice Born; nephews David (Rebecca) Born, Erik (Nicole) Born and Joseph Alexanian; and nieces Martha Born, Kathryn (Mark Colborn) Born, and Lisa (Thomas) Manganello, as well as numerous friends and his National Research family. He is predeceased by his brother Edward and parents, Harry and Caroline. Wilson will be missed by all who knew him. In lieu of flowers, memorial tributes to the ALS Association (www.alsa.org) and the American Diabetes Association (www.diabetes.org) are appreciated.

EDCO Introduces Direct-Drive Grinder EDCO, Inc. is pleased to introduce the company’s new DDG9 Direct-Drive Grinder for the professional user. This 110-volt grinder is maintenance free. No parts to service and no belts to replace. The DDG9 is suitable for resurfacing concrete floors in compact areas and removing coatings. At only 80 pounds, the Direct-Drive Grinder can fit inside most car trunks.

For More Information Contact: Jason Stanczyk Tel: 800-638-3326 www.edcoinc.com

Osborne

Tractive Appoints Director of Business Development

New Portable GPR System from Sensors & Software

Tractive AB recently began a series of initiatives to leverage the company. Tractive’s first step was the expansion of the management team. Ian Osborne has joined the company as Director of Business Development and Kristoffer Johnsen has joined as Operations Manager. Osborne was formerly with Blount International, where he held a number of roles including Director of R&D and Director of Business Development. Kristoffer Johnsen is a recent graduate of Gothenburg University who interned at Tractive, showing great aptitude for process and organization. The existing management team consists of Anders Johnsen - Chief Engineer and Managing Director, Ingrid Johnsen - Chief Financial Officer, Marie Peil – Marketing Manager, and Martin Persson – Engineering Manager.

Sensors & Software has introduced a new portable GPR system for identifying hidden objects in concrete and other materials. Based on the company’s existing GPR technology, the new Conquest 100 offers a range of new features such as a high-resolution touchscreen display and embedded Wi-Fi for direct data transfer to a smart device. This way, scan images can be emailed from a smart phone directly from the field.

The system has a resizeable handle, an all-in-one transportation case and comes with a long-life lithium ion battery. Software for the Conquest 100 has been designed for easy annotation and report preparation via a PC. The system retains all of the key features of its predecessor, such as the Power Cable Detector (PCD), automatic velocity determination and rapid grid collection and processing.

For More Information Contact: Marie Peil Email: peil@tractive.se www.pentruder.com | www.tractive.se

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For More Information Tel: 905-624-8909 www.sensoft.ca

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I N D U S T R Y

B I T S

Husqvarna Introduces Remote-Controlled Floor Grinder Husqvarna is pleased to introduce the PG 820 RC, a 17-horsepower remote-controlled version of the company’s existing floor grinder.

Using 3-phase power, the 1,182-pound PG 820 RC can operate at speeds between 250 and 1,100 RPM to a grinding width of 32 inches. With Dual Drive Technology™, the grinder is designed for concrete floor preparation and repair as well as polishing and grinding applications—both wet and dry. It is also suitable for the HiPERFLOOR® concrete floor polishing system. The use of remote control means the operator can correct hoses and the power cord, move the dust collector, inspect the floor and prepare the next set of tools while the machine is still running and executing the job.

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

New Self-Sharpening Bull Point Chisel from Makita A bull point chisel is a suitable accessory for general concrete breaking and chipping. However, effective breaking requires that the chisel remain sharp to penetrate hard concrete. The new Makita 16-inch, self-sharpening bull point chisel for 1.125-inch hammers features an innovative design engineered to keep the bit point sharp longer than traditional bits. It is suitable for use with Makita and other manufacturers’ 1.125-inch hex hammers, and is designed for general purpose demolition in brick or concrete. The chisel is also suitable for starting holes in concrete.

For More Information Contact: Wayne Hart Tel: 714-522-8088, x4410 Email: whart@makitausa.com

Hilti Introduces Equidist Technology to Diamond Tool Lineup

New LowStretch Saw Chains from STIHL The new 36 GBM and 36 GBE LowStretch chains for the GS 461 STIHL Rock Boss® concrete cutter are a combination of innovative design and engineering. These new chains have been designed to require less frequent tensioning under normal operating conditions, compared to previous chains in the range, and the application of an advanced surface heat treatment allows extreme abrasion resistance and surface hardness. The flange is also heat treated for shape retention and ruggedness.

The 36 GBM and 36 GBE chains are built with a toughened high grade alloy core that provides full segment life usage and directional arrows are stamped on each main drive link to aid proper chain installation. The general purpose diamond chain and economy/rental diamond chains are available in 12-inch and 16-inch sizes and stretch at a rate five times slower than previous chains. New rim sprockets are included with the purchase of these chains.

For More Information Contact: Dan Pherson Tel: 757-486-9212 Email: daniel.pherson@stihl.us

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Hilti Equidist technology for diamond core bits and wall saw blades features precisely positioned, evenly spaced diamonds for a highperformance segment matrix. This provides high quality cutting characteristics under difficult conditions, especially in concrete with high steel content. The company’s Highhorsepower Concrete Speed (HCS) and High-horsepower Concrete Life (HCL) core bits are designed for coring in the 1.375- to 24-inch-diameter range in reinforced concrete.

These bits have pre-sharpened segments for effective hole starting and are built specifically for high horsepower motors like the Hilti DD 200 core rig or larger. The new Equidist DS-BT wall saw blades also feature diamonds in the segment matrix that are equally distributed and evenly spaced. Compared with conventional wall saw blades, Hilti Equidist blades are said to achieve up to 35% higher cutting performance and up to 45% longer life.

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

I N D U S T R Y

B I T S

Corporate Director Appointed by PCI

Redesigned Website Launched by EDCO, Inc. EDCO has completely redesigned its website, www.edcoinc.com. The new website combines the latest in web development with EDCO’s training tools, creating an informational site complete with videos, explanations and illustrations. The website is also now in responsive design format, meaning all information is easily seen on desktops, tablets and smartphones. It has a Product Applications Guide, where visitors can match their needs with specific EDCO machines and recommended tooling, and gives customers free access to EDCO product picture downloads for their website and marketing needs.

The site’s EDCO Blog answers common application questions and there are many training and “how to” videos. Visitors have a choice of viewing the site in English, Spanish, French or German.

Wacker

The Precast/Prestressed Concrete Institute (PCI) has appointed Kimberly Wacker, Spancrete® Corporate Director, Marketing and Communications, as a member of its 2015 Board of Directors. In addition, Wacker will also serve as the chair of the PCI Marketing Council. Wacker has more than 15 years of strategic marketing experience working for business-to-business organizations, handling both business marketing and product development. She has been with Spancrete since 2006 and, in addition to her work at Spancrete, she also recently held the title of vice chair of the PCI Marketing Council.

For More Information Contact: Kimberly Wacker Tel: 414-290-9000 Email: kwacker@spancrete.com

For More Information Contact: Jason Stanczyk Tel: 800-638-3326 www.edcoinc.com

Bosch Introduces CSG15 Surface Grinder

PCA Appoints New Vice President Portland Cement Association named A. Todd Johnston as vice president for government affairs, effective January 19, 2015. Based in the association’s Washington, D.C. office, he will represent PCA and its members with the federal government. Johnston recently served as staff director for the Subcommittees on Environment and Energy under the U.S. House Committee on Science, Space and Technology. In that capacity, he lead a team who focused on the technical, scientific and legal underpinnings of the Environmental Protection Agency’s major regulatory Johnson initiatives, including: proposed greenhouse gas standards for power plants; proposed revisions to the National Ambient Air Quality Standards for ozone; and proposed changes to the scope of regulation falling under the Clean Water Act.

The Bosch CSG15 5-inch surface grinder employs maximum 12.5 amp, 9,300 RPM power for concrete grading, surface preparation, concrete cleaning and other harsh concrete applications. This power and speed is combined with constant response electronics to deliver the benefits of soft-start, smooth operation, constant speed under load and overload protection. The Bosch CSG15 features an innovative shroud with a proprietary guard-opening system that allows flush grinding up to walls and dust collection. It also has a wrap-around auxiliary handle that offers multiple grip positions.

A four-stage sealing system integrated into the output shaft and double-sealed ball bearings effectively seal the gear housing and gears against dust. A sealed switch extends life and epoxy-coated field windings add to overall system protection. In addition, the CSG15 features a brush ring where the shroud contacts the concrete surface. The brush ring combines with air vents on top of the shroud to further channel dust. This allows the necessary air to be pulled into the shroud so that the dust-filled air can be sucked through the dust port and into a vacuum. The dust port is 1.375 inches in diameter and fits Bosch dust extraction vacuums.

For More Information Tel: 877-207-2499 Web: www.boschtools.com

For More Information Contact: Patti Flesher Tel: 847-972-9136 Email: pflesher@cement.org

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I N D U S T R Y

B I T S

ECO-QUICKgel Slurry Treatment from Gelmaxx Gelmaxx has created a product that helps reduce the harmful impact that concrete slurry wastewater can have on the ocean. The company’s ECO-QUICKgel slurry solidifier is a super absorbent powder that turns concrete slurry into a dry material that is safe to dispose in any standard waste container. With the ECO-QUICKgel slurry solidifier, contractors can quickly and efficiently clean up wastewater without disrupting their workflow. The solidifer is an organic polymer that can absorb up to 500 times its weight without much added volume. 20 grams per gallon of treated material will create a gel like solid within minutes that is safe to dispose and EPA compliant.

For More Information Tel: 855-322-3335 www.gelmaxxusa.com

Hilti DST 10-CA Wall Saw System with Cut Assist The new Hilti Wall saw system DST 10-CA is the first saw with Cut Assist technology—an electronic assistant for increased sawing productivity. By entering parameters by remote control, Cut Assist automatically adjusts the saw to make the cut. Cutting depth can be monitored by the operator in real time via the display on the remote control unit. This new electric wall saw is suitable for a wide range of sawing applications, such as cutting and extending openings for doors and windows and creating openings in reinforced concrete floors. It also can be operated in tight spaces with limited access as the operator can position themselves a safe distance away. Hilti Traction Control (HTC), the company’s electronic saw advance control system, ensures maximum sawing performance with a 16-amp, 480-volt 3-phase electric supply.

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

Handheld Scabbling Hammer Introduced by CS Unitec

Redesigned Concrete Chain Saw from RGC Reimann & Georger Corporation (RGC) is pleased to introduce the new-look C150 HydraCutter concrete chain saw for the professional user. This hydraulic saw is available in 11.7- and 17.4-horsepower models that have 8- and 12-GPM flow respectively. The C150 weighs 30 pounds and can achieve a cutting depth of 30 inches in concrete. The chain saw can perform plunge, bottom, notch, trim and corner cuts without over cutting. A new cast aluminum ergonomic frame increases precision and reduces operator fatigue, while a dual function trigger starts and stops saw and water simultaneously. A trigger lockout safety feature is standard and a roller nose sprocket has been designed to maximize chain and bar life.

The C150 HydraCutter can be used with RGC’s S-series chain for mediumsoft to very hard aggregate with heavy to moderate steel rebar, or with the L-series chain for green concrete, brick and concrete block without rebar.

For More Information Tel: 800-742-8665 Email: sales@rgcproducts.com www.rgcproducts.com

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CS Unitec’s triple-head concrete scabblers remove laitance and expose aggregate for the application of sealants and coatings.Three tungsten carbide tipped (TCT) pistons produce 7,200 blows per minute to reduce, roughen and texture concrete. The scabblers consume only 15.9 CFM and have a vibration level of 8.7 Aeq m/s. Both have a noise level of 98 decibels and weigh 11.5 pounds. An optional dust shroud (P/N 437.5300) removes dust when attached to one of CS Unitec’s industrial vacuum systems. There are two styles of TCT carbide pistons: Cruciform heads (on Model 153.5200) are designed for leveling concrete and preparing cracks prior to repair and Bush heads (on Model 153.5250) are designed for exposing aggregate for the application of coatings. CS Unitec also offers a vibration-reduced, single-head tool as part of its new line of concrete scabbling hammers.

For More Information Tel: 800-700-5919 Email: info@csunitec.com Web: www.csunitec.com

I N D U S T R Y TCA Announces Winners of Tilt-Up Professional Awards The Tilt-Up Concrete Association (TCA) recently announced the winners of the 2014 Tilt-Up Professional Awards. Winners will be presented with their awards during the 2015 TCA International Convention, scheduled for this fall in New Jersey. The award categories and winners are as follows:

B I T S

GT TURBO AIR WALL SAW The Power of a Hydraulic Saw with the Clean Ease of an Air Saw

Murray Parker Memorial Award, created to recognize a contractor who has significantly contributed to the growth of the tilt-up industry in new markets and in new regions, was presented to Clay Fischer, President of Woodland Construction.

David L. Kelly Distinguished Engineer Award, created to honor advancements and the evolution of engineering solutions for the tilt-up industry, was presented to Timothy W. Mays, Ph.D., P.E., Associate Professor of Civil Engineering at The Citadel.

Robert Aiken Memorial Award, recognizing one of the industry’s founding fathers, was given to Mark P. Gardner, P.E., Managing Engineer, Hinman Consulting Engineers.

The Power of a Hydraulic Saw with the Clean Ease of an Air Saw

Irving Gill Distinguished Architect Award, honoring architectural achievement in tilt-up, was presented to Jeffrey Brown, AIA, Principal-inCharge of Design for Powers Brown Architecture.

Peter Courtois Memorial Award, the industry’s highest honor as it is presented to a recipient whose career-long dedication to the greater good of the tilt-up industry is recognized by their peers, was given to Richard J. McPherson, P.E., Chairman of the Board for Seretta Construction For complete recipient biographies and additional information, visit www.tilt-up.org/tilt-uptoday/.

• Dual Stage Turbine Compressor has Greater Efficiency • Quick Cam Easy-off Motor Mount for Lightweight Handling • 48 lbs. Frame | 29 lbs. Motor

For More Information Contact: Mitch Bloomquist Tel: 319-895-6911 Email: mbloomquist@tilt-up.org

• Made with Strong Lightweight Aircraft Quality Components • Produces up to 25HP (125 lbs.) Torque • No Oiler Needed - Just Clean Air Power • 50% Quieter than Vane Motors

think green, think power, think gdm

www.gdmsaws.com | 866-443-6729

GDM Technologies is an American company. All products are made in the U.S.A. GDM-halfpg-ConConst.indd 1

New Steel Core Available from Inchfeet Technology A new steel core has been introduced by Asbilek, which is represented by Inchfeet Technology in the U.S. The new steel core has been named the Tuff-Core and has been designed for use in stone cutting applications where repeated segment re-tipping can be required. It is suitable for cutting in hard aggregates like flint without core cracking. This particular design of steel core has been engineered by putting the key hole under compression, eliminating the chances of premature cracking and blade failure.

For More Information Contact: Metin Sakarcan Email: metin@inchfeet.com W WW. C O N C RE TE OPE N IN GS.COM

1/14/13 10:04 AM

Subscribe Today— It’s Free!

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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

ACCU-CUT CONCRETE SERVICES

CORING & CUTTING SERVICES, INC.

J-RAY CONTRACTORS, LLC

Palm Harbor, Florida

Jacksonville, Arkansas

Marrero, Louisiana

AGGREGATE TECHNOLOGIES

CR MEYER

JACK DOHERTY CONTRACTING

Houston, Texas

Oshkosh, Wisconsin

Woburn, Massachussetts

AMERICAN EAGLE CONCRETE SERVICES

CUT-RITE CONCRETE CUTTING CORP.

K.C. CORING & CUTTING CONSTRUCTION, INC.

Orlando, Florida

Pawtucket, Rhode Island

Kansas City, Missouri

ANDERS CONSTRUCTION, INC.

CUTTING EDGE SERVICES CORP.

L&S FORMLESS CURB COMPANY

Harvey, Louisiana

Batavia, Ohio

Hanover, Pennsylvania

ATLANTIC CONCRETE CUTTING, INC.

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

LIUNA LOCAL 506 TRAINING CENTRE

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

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. Mount Holly, New Jersey

AUSTIN ENTERPRISE Bakersfield, California

CENTRAL CONCRETE CUTTING, INC. Edgar, Wisconsin

COBRA CONCRETE CUTTING SERVICES CO. Arlington Heights, Illinois

CONCRETE RENOVATION, INC. San Antonio, Texas

CUTTING EDGE SERVICES CORP. Batavia, Ohio

DEANDREA CORING & SAWING, INC. Henderson, Colorado

DI-TECH INTERNATIONAL, INC. Winnipeg, Manitoba, Canada

GREENE’S, INC. Woods Cross, Utah

HARD ROCK CONCRETE CUTTERS, INC. Wheeling, Illinois

HOLES INCORPORATED Houston, Texas

ONLINE CONCRETE CUTTING SERVICES PTY. LTD Seven Hills, New South Wales, Australia

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

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MEMBERSHIP

NE

W MEM B E

North American Contractors

Overseas Contractor

AUSTIN CUTTING & CORING

ASSER CONCRETE WORKS, LLC

B&D CONCRETE CUTTING

DIACORE

COAST CUTTING & CORING LTD.

KWCSOUTHWEST

LANECO, INC.

Manufacturer

OSBORN CONCRETE CUTTING

STONE SUPPLY

Taylor, Texas

Dubai, United Arab Emirates

Atlanta, Georgia

Frenchs Forest, New South Wales, Austrailia

Parksville, British Columbia, Canada

Bristol, United Kingdom

Portland, Oregon

Kingsley, Pennsylvania

Huntsville, Alabama

PERFORMANCE SAWING & DRILLING LTD. Surrey, British Columbia, Canada

Affiliate

PRECISION CUTTING & CORING

ARTHUR J. GALLAGHER & CO.

STOKKE CONCRETE CUTTING

PULLMAN ERMATOR

Polishing Contractor

SUNBELT RENTALS

Kelowna, British Columbia, Canada Belgrade, Montana

ROYALE CONCRETE

Chicago, Illinois Tampa, Florida Miami, Florida

RS

Fairfield, Iowa

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

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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.

TESTIMONIAL

24/7

Why am I a member of CSDA? One word: networking. As a longtime supplier of demolition robots to concrete cutters, it is important for me and my company to develop and maintain relationships among both customers and peers, and keep a finger on the pulse of the industry. Whether I’m participating in the quarterly Board and committee meetings or attending the annual convention, I am constantly struck by how welcoming everyone is and how easy it is to engage in conversation. There is a palpable sense of purpose and commitment but always seasoned with a large dose of humor and easy camaraderie.

Beyond the meetings, I enjoy catching up with CSDA members on my travels, seeing them in Peter Bigwood their places of business Brokk, Inc. Monroe, Washington and sharing insights. peter@brokkinc.com More than once I have had occasion to reach out to the CSDA office from the road to gather information on a contractor in the area—it’s like having my own research team on standby! As CSDA continues to grow and evolve, I see the kind of lively, friendly and professional network they provide—for both suppliers and contractors alike—as a critical component of our success.

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.

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

$585

$750

$1,255

$910

$1–2M

$950

$1,550

$1,160

$2–3M

$2,290

$1,720

$3M–5M

$1,445 $750 $1,950 $1,250

$5–10M

$2,450

$4,975

>$10M

$3,095

$6,175

$3,690

$400

AFFILIATE

$725

$2,775

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

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

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

CALENDAR 2015

NOVEMBER 2-6

MARCH 30

Batimat 2015 Paris Nord Villepinte Exhibition Centre Paris, France Email: info@batimat.com www.batimat.com

CSDA Spring Meetings The Vinoy Renaissance St. Petersburg Resort & Spa St. Petersburg, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

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

MARCH 30-APRIL 2 CSDA Convention and Tech Fair The Vinoy Renaissance St. Petersburg Resort & Spa St. Petersburg, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

NOVEMBER 6

APRIL 2-4 BuildTech Yangon Myanmar Convention Center Yangon, Myanmar Email: btyangon@sph.com.sg www.btyangon.com/en

APRIL 20-25 World of Concrete Europe Paris Nord Villepinte Exhibition Centre Paris, France www.intermatconstruction.com

APRIL 22-25 IACDS Annual General Meeting Paris, France Email: info@iacds.org www.iacds.org

JUNE 4-5 CSDA Summer Meetings Sheraton Kansas City Hotel Kansas City, MO Tel: 727-577-5004 Email: info@csda.org www.csda.org

AUGUST 26-28 Our World In Concrete & Structures The Goodwood Park Hotel Singapore Tel: 65-6733 2922 Email: ci-p@cipremier.com www.cipremier.com

CSDA Fall Meetings Denver, CO

SEPTEMBER 10-11 CSDA Fall Meetings Denver Marriott City Center Denver, CO Tel: 727-577-5004 Email: info@csda.org www.csda.org

OCTOBER 14-15 Offsite Construction Show ExCel London, United Kingdom Tel: 44-203 9296 Email: eddie@marwoodevents.com www.off-siteshow.co.uk

OCTOBER 28-30

6 0 | M ARC H .15

NOVEMBER 6-7 CSDA Wire Sawing 201 Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email: info@csda.org www.csda.org

DECEMBER 3-4 CSDA Winter Meetings Park City, UT Tel: 44-1892 786210 Tel: 727-577-5004 Email: info@csda.org www.csda.org

2016 FEBRUARY 2-5

Concrete Show South East Asia Jakarta International Expo Jakarta, Indonesia Tel: 49-40-3999905-11 Email: frank@merebo.com www.concreteshow.merebo.com

World of Concrete Las Vegas Convention Center Las Vegas, NV TEL: 972-536-6423 www.worldofconcrete.com

NOVEMBER 2-3

CSDA Spring Meetings JW Marriott Desert Springs Resort Palm Desert, California Tel: 727-577-5004 Email: info@csda.org www.csda.org

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

NOVEMBER 2-3

CSDA Slab Sawing & Core Drilling 201 Certification, Clearwater, FL

World Demolition Summit Kransnapolski Hotel Amsterdam, the Netherlands Tel: 44-1892 786210 Email: lindsay.gale@khl.com www.demolitionsummit.com

International Conference on Stone & Concrete Machining Ruhr University Bochum Congress Center Bochum, Germany Email: icscm15@wtech.rub.de www.icscm.de

MARCH 7-8

MARCH 9-12 CSDA Convention & Tech Fair JW Marriott Desert Springs Resort Palm Desert, California Tel: 727-577-5004 Email: info@csda.org www.csda.org

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.

Target the Specialized Industry of Concrete Cutting, Polishing and Imaging

READERSHIP BY PROFESSION

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.

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

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, visit the advertisers page on concreteopenings.com, or contact the vendors below.

PAGE

ADVERTISER

PHONE

EMAIL

48

Apollo General Insurance Agency, Inc.

707-996-2912 x17

bobe@apgen.com

36

Brokk, Inc.

877-276-5548

peter@brokkinc.com

41

Concut, Inc.

253-872-3507

suemayer@concutusa.com

45

CS Unitec, Inc.

203-853-9522

info@csunitec.com

27, Inside Front Cover

Diamond Products

800-321-5336

jpalmer@diamondproducts.com

37

Diamond Tools Technology

612-408-9253

mark@diamondtoolstechnology.com

5

Diamond Vantage

866-322-4078

johnconrad@diamondvantage.com

11

Dixie Diamond Manufacturing

678-296-3751

skilgore@dixiediamond.com

30

Exco, Inc.

215-244-0731

elounsberry@mecoconstructors.com

35

Expert Equipment Company

713-797-9886

expertequipment@sbcglobal.net

55

GDM Technologies/Terra Diamond

801-990-9034

gdmsaws@yahoo.com

40

GelMaxx

619-701-7246

info@gelmaxx.net

43

Geophysical Survey Systems, Inc. (GSSI)

603-893-1109

harmonj@geophysical.com

Inside Back Cover

Hilti North America

918-872-3079

claire.combs@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

19

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

39

Pullman Ermator

855-736-2869

info@ermatorusa.com

63

Sensors & Software

905-624-8909

tds@sensoft.ca

42

Solutions Insurance Trust

312-803-7420

kristen_long@ajg.com

CUTTER’S CORNER 400 HERTZ CUTTING EQUIPMENT WANTED Send pictures, specifications and prices to info@400hertz.net.

For more information, contact 400 Hertz Engineering at 714-424-9550.

6 2 | M ARC H .15

This classified section is for use by anyone who wants to sell or buy used equipment, post help wanted ads or advertise business opportunities. Anyone interested in placing ads should send copy to Concrete Openings Classifieds, 100 2nd Ave S, Ste 402N St. Petersburg, FL 33701. Copy can also be faxed to 727-577-5012 or emailed to rhitchen@concreteopenings.com.

Cost: $100 for 10 lines for members; $200 for non-members.

Additional lines $10 each. Copy must be in the CSDA office no later than the first day of the month preceding publication

Concrete Scanning?

Integrate Conquest 100 in YOUR work ow Tremendous growth in tenant expecta�ons for building performance, both in commercial and residen�al markets, has resulted in building structures becoming more complex. To accommodate the variety of embedded services, the number of conduits built into concrete slabs and structures is increasing. Any addi�ons require rou�ng of conduits or piping through crowded slabs, and must be done without damage to exis�ng embedded services or primary structural components.

This has created a growing demand for services such as concrete scanning, non-destruc�ve tes�ng (NDT), cu�ng and coring. Professionals and companies need more sophis�cated tools to help assess exis�ng condi�ons or add these new embedded elements into the concrete.

Providers of concrete scanning, tes�ng, cu�ng and coring services also need to offer value and efficiency to be compe��ve and successful in ge�ng contracts.

Amongst the non-destruc�ve technologies for imaging and assessing the interior of concrete structures, ground penetra�ng radar (GPR) has emerged in recent years as a leading tool. Unlike tradi�onal X-raying, GPR is safe, requires access to only one side of a slab or wall, usually involves only one technician (without expensive cer�ca�on), can produce results in real �me and can be performed during normal business hours with minimal disrup�on to building opera�ons.

ACCURATE IMAGING GPR provides accurate images and, by genera�ng slices at varying depths, the depth and orienta�on of embedded objects is determined. Dual-technology systems, like Conquest 100, that combine GPR and

Power Cable Detec�on systems, go a step further and indicate which conduits hold hazardous current carrying power lines. The ability to quickly generate images to share wirelessly from the eld or include in engineering reports can be a signicant compe��ve advantage.

EFFECTIVE TO BE EFFICIENT Even as the need for these services increases, the dollars available to pay for them are harder to nd. Having the ability and reputa�on for doing a thorough job without repeated visits or errors is a real compe��ve advantage. Speed is good, effec�veness is be�er. Professional-grade GPR tools are able to provide this advantage.

WORKFLOW INTEGRATION Service providers must t seamlessly into the workow and project management of their customers, especially on large projects. In fact, they can gain compe��ve advantage by offering ways to cut out �me and money from the processes of larger projects. For example, real-�me assessment by off-site reviewers of scanned results can reduce the �me between scanning and cu�ng, o�en avoiding the need for a second site visit.

NON-INVASIVE Assessment and tes�ng without expensive and harmful destruc�ve tes�ng is always preferable. Even where expensive destruc�ve tes�ng or coring is required, targe�ng it to where it is most effec�ve can save �me and money.

DIFFICULT SITES GPR sensors are small and can be used in �ght spaces and in any orienta�on on oors, walls and ceilings. Cri�cally, GPR is applied from the exposed surface and is able to nd features in slab-on-grade. It can even iden�fy

voids in the surrounding materials.

Large-scale surveys can be collected by deploying the GPR sensor on a cart or vehicle-towed pla�orm.

FLEXIBILITY GPR can be thought of as many tools in one, and offers owners the possibility of breaking into new businesses and ac�vi�es. From marking ahead of cu�ng or coring, to inves�ga�ng structural components, providing due-diligence records, to assessing the deteriora�on of rebar, a good GPR system can do it all.

OWNERSHIP Modern GPR systems are inexpensive and easy to use, requiring very li�le training and no cer�ca�on costs. Improved data processing has automated much of the process, including automated reports where needed.

Concrete scanning GPR products have been around for a number of years, but their use was limited due to the need for experienced technicians and challenges in data interpreta�on. Developments in both hardware and so�ware have made Sensors & So�ware GPR systems, such as Conquest 100, an economical, reliable and widely accepted method for loca�ng objects and services embedded in concrete.

GPR technology has emerged to become a valuable and reliable tool to improve asset protec�on and risk management as well as a signicant prot center for service providers.

For addi�onal informa�on visit www.Conquest100.com or call 1-800-267-6013.

DIRECTOR’S DIALOGUE

Exciting Future for CSDA

PATRICK O’BRIEN Executive Director

C

SDA celebrates 43 outstanding years since the association was formed. While there is much to be grateful for the past successes, the future could not be more exciting for the association.

CSDA has accomplished so much since its founding in 1972.

But it is the future that holds particular promise, with so many young professionals, the Next Generation, taking an active role in the association. It was 2008, at the first meeting of the CSDA Past Presidents, that a goal was set to “develop programs to mentor and recruit future leaders.” Today, we can look back and say that this goal was spot on and has helped reinvigorate CSDA with new leaders for the next generation. Their cutting edge thoughts on how to make the industry better—for members and non-members—are taking hold.

The association’s training programs have covered the basic cutting disciplines for over 20 years. Now, CSDA is developing training for selective demolition, polishing, imaging, supervisors and mechanics. The new leaders realize that investing in training employees has many benefits. Specifying agencies are more frequently asking contractors to demonstrate that their employees are sufficiently trained and qualified to perform contracted work.

Historically, there has never been an industry requirement to train operators. However, this is changing and training will become even more important in the future.

The construction specifying industry currently has over 35 CSDA standards, specifications, tolerances and best practices to refer to when planning work. While a few of these documents date

6 4 | M ARC H .15

back to the early days of the association, many have been developed and revised recently to meet the needs of a changing environment.

The recent introduction of CSDA-ST-115 Measuring Concrete Micro Surface Texture for the concrete polishing floor industry is but one example of a document that has garnered great interest from architects and engineers who want a detailed document to qualitatively define the outcome of a polished floor.

Besides seeing the benefits of employee training and certification, CSDA Next Generation leaders have also recognized the importance of a company certification program. Work is underway to develop a program that best meets the needs of specifying agencies. This program will bring together training, safety and standards to make dealing with owners and specifying agencies much easier, resulting in greater business opportunities.

Much of the progress with training, safety and specifications has been around for some time, so you may ask, “What is different?” In many cases, CSDA was ahead of its time. While a minority thought the programs were important, there was not a strong external demand.

The Next Generation professionals have been able to recognize the significant achievements that have been made and are building a better future with their unique perspective on the construction industry.

Changes are rapidly being incorporated on a daily basis.

CSDA is indeed fortunate to have had an excellent group of leaders to form the association and get us to where we are today.

And we are fortunate to have a dedicated group of Next Generation professionals that will lead CSDA to even greater heights.

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