2014 Issue

55 F OR MANY SCHOOL districts across the country, funding for building repairs is often scarce. As a result, school administrators are forced to make temporary repairs until money becomes available for more permanent solutions. Administrators at Tintic School District in Eureka, Utah have been dealing with that scenario for the last decade. Sev- eral areas of the school’s roof leaked, but without money to replace it administrators were forced to “band-aid” the problems every year. A lot of ceiling tiles were being replaced each year. With a variety of roof sections on the build- ing, the roof’s original design and con- struction needed to be addressed. Varied metal panel lengths and exposed fasteners contributed to the leaking problem. Further complicating the issue was the fact that the panel was spanning open purlins. The new metal solution required ASTM 1592 testing (ASTME 1592 test protocol is titled Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure). Wind loads were determined through ASCE 7-05 cal- culations, ensuring the new system was designed to provide long-term, watertight protection. Based on the project’s objectives, Logan DeWitt, local Garland representative and Garland’s engineering staff, recommended the installation of Garland’s R-Mer® Span structural standing seam roof system. The 24-gauge, 18-inchwide steel panels were in- stalled on a framing system that transferred roof loads to the existing structure. On-site roll forming allowed panels to be formed in 110-foot lengths, eliminating end laps, which contributes to R-Mer Span’s hydro- static capabilities. A new 18-gauge galvanized framing system was installed over the existing metal panels and attached directly into the existing pur- lins. Ogden-based contractor Rodac, LLC enhanced the perimeter and corner attach- ment pattern to ensure proper installation was achieved. The new framing system was pre-manufactured to fit between ribs of the existing system, eliminating the need to remove the existing roof. Additional concerns regarding panel length were addressed by utilizing a one-piece clip. With continuous panel runs of over 100 feet, the panel can expand and contract over an inch as the ambient temperature rises and falls. If the panel is restricted by the clip or fasteners when the expansion occurs, the panel will buckle and billow. This will increase the oil canning effect that is com- mon with standing seam panels, as well as potentially damaging the panel and its clips. The one-piece 16-gauge clip allows the panel to slide freely over the clip for un- limited distances, eliminating any concern of leaking caused by buckling or billowing. In addition to the metal roof, newmetal wall systems were installed throughout the build- ing and then tied into themetal roof. DeWitt coordinated theproject withRodec toensure proper installation of the metal panels. The 64,000 square-foot roof system is covered by a 30-year manufacturer’s warranty. Logan DeWitt is Senior Technical Advisor for the Garland Company. He can be reached at 435-655-5044 for more information. The Tintic School District Project By Logan DeWitt, Senior Technical Advisor, The Garland Company