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JOB AT A GLANCE JOB AT A GLANCE PROJECT: PROJECT: submergence vehicle preserved for Undersea Museum in U.S. Navy's deep Apply a hot fluid asphalt waterproofing system to the park deck above the Washington State Woodall Rogers freeway tunnel in Dallas, Texas COATINGS CONTRACTOR: COATINGS CONTRACTOR: Q.E.D. Systems, Inc. & Waterproofing Chamberlin Roofing 1305 Lumsden Rd. 2346 Glenda Ln. Port Orchard, WA 98367 Dallas, TX 75229 (360)273-9110 (214) 373-9551 www.Qedsysinc.com www.chamberlinltd.com SIZE OF CONTRACTOR: with: The crew applied a primer and then hot asphalt to the horizontal surfaces. While still wet, they embedded a reinforcement sheet into the coating, topped it with another layer of asphalt, and finished with another membrane and Rootbloc. guys who were dumping the waterproofng asphalt, and three to four other crewmembers squeegeeing it onto the surface. Ten another set of guys followed behind to ensure that the proper thickness of 125 mils [3,175 microns] was achieved," said Wharton. While the waterproofng asphalt was still wet, crewmembers used brooms to embed Henry Polyfab reinforcement sheet into the coating. Te crew then laid down another 90 mils (2,286 microns) of hot fuid-applied waterproofng asphalt. According to Wharton, the Klyde Warren Park job is the largest hot fuid-applied project he and his crew have ever worked on. It was also one of the most challenging. "Vertical trenches were built into the design of the park deck, and these surfaces required the same hot fuid-applied coating as the horizontal foor," stated Wharton. Te crew had to come up with a safe and efective way to apply the material. Tey frst tried heavy knap rollers but were unable to get the proper buildup and thickness. Ultimately, they used trowels to apply the hot coating to the bottom of the wall and then troweled the material up the vertical surface. "Applying 400° F [204° C] hot fuid waterproofng material to the vertical trenches required the safest of practices and the highest level of skill from the applicator," said Wharton. He and his crew found that by letting the material cool a bit before troweling up the wall, the waterproofng asphalt was much easier to work with, became less runny, and was more likely to stick properly to the surface. Troughout the project, safety was the number one priority. With workers being inches away from extremely hot fuid, extra measures were taken to ensure that no one was burned during the installation. "Chamberlin's safety director Jeremy Waldorf was onsite to enforce the use of proper personal protective equipment, such as long-sleeved shirts, tall leather gloves, safety glasses, vests, hard hats, and fre extinguishers," stated Wharton. Propulsion Controls Engineering Oklahoma, Arkansas, Louisiana, and New 750 employees that serve Texas, 920 W. Marine View Drive Mexico Everett, WA 98201 SIZE OF CREW: (425) 257-9065 22 crewmembers www.pceshiprepair.com PRIME CLIENT: SIZE OF CONTRACTOR: Texas Department of Transportation A five-man crew worked this project SUBSTRATE: New concrete, cast-in-place and precast PRIME CLIENT: Naval Undersea Museum SIZE OF JOB: 1 Garnett Way 3 acres (12,141 m²) Keyport, WA 98345 (360) 396-4148 DURATION: 18 months SUBSTRATE: UNUSUAL FACTORS/CHALLENGES: Metal » The Klyde Warren Park job was the largest hot fluid-applied waterproofing job undertaken by the Chamberlin crew SUBSTRATE CONDITION: »Rusting, deteriorating the fluid-applied asphalt coating was approximately The temperature of with corrosion cells 400° F (204° C) » The crew worked over free flowing vehicular traffic for the duration of the SIZE: project. There was zero tolerance for anything that could potentially fall 4,500"² (29,032.2cm²) originally, 24,000"² (154,838.4cm²) final through the cracks onto cars below, including any of the waterproofing fluid » Applying the extremely hot coating to the vertical trenches was DURATION: required extra safety precautions and a great deal of challenging and Approximately 2 monthsapplicators skill on the part of the MATERIALS/PROCESSES: UNUSUAL FACTORS: » Caulked all pre-cast pieces with Henry #925 for Sealant » Needed to renegotiate a part of the contractBESmore repairs » Used 3,000-psi (20,684 kPa) power washers to clean corrosion cells, » Discovered massive running rust, deteriorated metal, the concrete substrate and remove any on or vessel small trees, and duct tape dirtthedebris once all the joints were sealed » Detailed all trench beams, joints, transitions, and penetration points with Henry Neoflash elastomeric MATERIALS/PROCESS: membrane that was embedded in Henry 790-11 hot fluid-applied asphalt » Inspected surface and interior of Submersible for deterioration » Applied Henry 910 asphaltic primer to the entire section of concrete » Followed SSPC-SP1, Solvent Cleaning; SSPC-SP2, Hand Tool Cleaning; » Applied 125 mils (3,175 microns) of Henry 790-11 hot fluid-applied and SSPC-SP3, Power Tool Cleaning protocol asphalt using squeegees on the horizontal surfaces and trowels on the » Applied Ship-2-Shore Industrial on rusted areas vertical surfaces » Spray-applied epoxy coating (MIL-PRF-23236) in two coats to achieve 12 » Used brooms while the waterproofing asphalt was still wet to embed mils DFT (0.305mm) Henry Polyfab reinforcement sheet into the coating. The crew then laid » Spray-applied topcoat (MIL-PRF-24635), Steel-Master 9500 silicone down another 90 mils (2,286 microns) of hot fluid-applied waterproofalkyd to achieve 4 to 6 mils DFT (0.102mm to 0.152mm) ing asphalt » SAFETY CONSIDERATIONS: » Laid down Henry G100 S/S and Henry Rootbloc 20 over the entire water» Coating contractors wore North full-faced respirators, Miller Maynard II proofed surface fall protection, and Tyvek suits » Installed Henry DB650 drain boards, or polypropylene water retention » Scaffold contractors wore Miller harnesses 100% of the time and drainage composites Testing…1,2,3 SAFETY CONSIDERATIONS: According to Wharton, with the reinforcement sheet set in between the two layers of waterproofng coating, the system is bonded together and creates a comprehensive system that » Retained a safety director onsite » Used proper personal protective equipment, such as long-sleeved shirts, tall leather gloves, safety glasses, vests, hard hats, and fire extinguishers COATINGSPRO JANUARY 2014 89