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Federal, State, Municipal & Military

Lilburn City Hall and Gwinnett County Public Library’s Lilburn Branch, Lilburn, Ga.

Photo: hortonphotoinc.com
Photo: hortonphotoinc.com

Precision Planning Inc. designed a public building in Lilburn, Ga., for two occupants: Lilburn City Hall and Gwinnett County Public Library’s Lilburn Branch. Interior spaces provide easy access and circulation within the structure, and a shared lobby space on the first and second floors. On the exterior, steep-slope roof elements draw attention to specific building functions and entry locations, and metal roof panels to accentuate these spaces.

Lance Davis, AIA, assistant vice president at Precision Planning, says, “We wanted a quality roofing product that would last a long time and meet FM requirements [from FM Approvals LLC]. Metal gives us the ability to create visual interest while providing protection from weather.”

Nations Roof LLC installed 10,000 square feet of Petersen Aluminum Corp.’s 16-inch-wide, 24-gauge PAC-CLAD Tite-Loc Plus panels in Sierra Tan. Soffit and trim pieces were fabricated from Petersen’s PAC-CLAD flat sheet.

Ryan Rebstock, regional operations manager at Nations Roof, says the height and pitch of the clock tower’s roof presented challenges for the installation crew. The pitch is 8:12 and is elevated about 80 feet in the air, which required all roof work to be performed from a 120-foot mechanical lift. “The clock tower roof assembly was completed on the ground, but we could not have installed panels on ground because of the rigging needed to hoist it into position would have required us to cut holes in the panels,” Rebstock says. “So, we took panels up two at a time, installed them, then came down for more panels. We had to hand-seam the clock tower roof because of the extreme roof pitch and weight of the seamer. It wasn’t a large amount of metal on the tower but it took a few days to install with all the up-and-down.”

Nations Roof was on site for roughly eight months, completing work in phases, each of which required its own set-up and takedown process, and the project was completed in October 2016.

“The rest of the roof on the building wasn’t as steep [as the clock tower], but seaming was done by hand because the crew preferred to do it that way,” Rebstock says. “By the time the crew became used to seaming by hand on the steep sections, they developed a nice rhythm so they continued that way.”