CoatingsPro Magazine

JUL 2018

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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COATINGSPRO JULY 2018 33 boxing matches, concerts, conventions, and more — sealing off the entirety of the ~140,000-square-foot (13,006.4 m2) area to be coated wasn't realistic because of how much it would restrict event attendees. "We had to get in there without jeopardizing the activities that make the A lamodome successful," Fontenot explained. As a result, upon arriving at the jobsite in summer 2017, Miller and the 12 total crew members from T.W. Hicks effec- tively divided the massive plaza level into smaller sections of ~10,000 square feet (929.0 m2) each. e goal was to complete one of those sections each week, thus allowing the entire job to be finished within four months and keep the overall schedule on track. "e first thing that we did was install roughly 15- to 20-foot [4.6‒6.1 m] curtain walls and hung plastic to barricade ourselves off," Miller recalled. "We'd really protect that area, and every week we had to coordinate with A lamodome officials and the general contractor." e plastic curtain walls helped limit dust exposure to the rest of the facility and any attendees. They crew started by hanging plastic curtain walls to break the larger 140,000-square-foot (13,006.4 m²) project into smaller sections at about 10,000 square feet (929.0 m²) each. Then they got to shot blasting the concrete. The goal was to achieve International Concrete Repair Institute's (ICRI) Concrete Surface Profile (CSP) 7, and they used hand grinders around the perimeter in addition to the shot blasting machines to accomplish that. JOB AT A GLANCE PROJECT: Upgrade the floor of the plaza level of the Alamodome before the 2018 Final Four COATINGS CONTRACTOR: T.W. Hicks, Inc. 12000 Crown Point Dr., Ste. 130 San Antonio, TX 78233 (866) 841-3484 www.twhicksinc.com SIZE OF CONTRACTOR: ~40 employees SIZE OF CREW: 12 crew members PRIME CLIENT: Alamodome 100 Montana St. San Antonio, TX 78203 (210) 207-3663 www.alamodome.com SUBSTRATE: Original polished concrete CONDITION OF SUBSTRATE: Fair but worn, the building opened in 1993 SIZE OF JOB: 140,000 sq. ft. (13,006.4 m²) DURATION: ~16 weeks UNUSUAL FACTORS/CHALLENGES: » The Alamodome was open for events during the installation process and was part of a broader $60-million renovation for the facility, which meant the crew had to coordinate continuously. » T.W. Hicks divided the job into smaller 10,000 sq. ft. (929.0 m²) sections. MATERIALS/PROCESSES: » Hung plastic curtain walls to segment off each section » Shot blasted existing surface using Goff unit to achieve the International Concrete Repair Institute's (ICRI) Concrete Surface Profile (CSP) 7 » Used 7-inch (17.8 cm) Makita grinders to prep perimeter and for more detailed work that the main unit could not reach » Swept and vacuumed area » Installed Sikafloor-24NA PurCem urethane mortar bed at ~¹/ 8 -in. (3.2 mm) thickness, using an 18-inch (45.7 cm) CAM rake; used urethane mortar as patching agent for any imperfections, surface cracks, or divots » Installed 10,000 linear feet (3,048.0 m) of integral 8-inch (20.3 cm) cove base using Sikafloor 217 epoxy resin with CAB-O-SIL fumed silica to yield ¹/ 8 -inch (3.2 mm) thickness » Squeegeed and backrolled Sikafloor 264 epoxy at ~16 mils (406.4 microns); broadcast granite Sikafloor DecoFlake chips to rejection » Squeegeed and backrolled Sikafloor 217 topcoat at ~16 mils (406.4 microns) SAFETY CONSIDERATIONS: » Wore safety glasses, steel-toed boots, and eye protection » Wore full-body coveralls and 3M respirators when mixing material

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