Borman aircraft hangar buildinG,Lafayette Regional Airport| Lafayette, La.
›› Retrofit Team ROOFING CONTRACTOR: Roofing Solutions LLC,
www.roofingsolutionsla. com
›› Materials
A new 24-gauge 238T standing-seam metal roof in regal white was installed over an existing barrel roof. About 7,000 lineal feet of 16-gauge factory- notched sub-purlins were manufactured 5-inches deep to accommodate full-thickness R-13 fiberglass insulation that was installed in the cavity between the existing and new roofs. Because of high-wind speeds for the area, continuous clips available with the 238T roof system were installed to satisfy wind-uplift requirements. Additional sub-framing was not required in corners or on roof edges.
Roof manufacturer: McElroy Metal,
www.mcelroymetal.com Sub-purlin manufacturer: Roof Hugger Inc.,
www.roofhugger.com
›› The Retrofit The new 120-foot-long roof panels were rollformed and curved onsite. The challenging job required up to 15 roofing workers to stage the panels atop the existing roof. Approximately 31,500 square feet of metal roofing was installed.
Port of Entry| Torrington, Wyo.
›› Retrofit Team PROJECT ARCHITECT: Doug A. Selby Architect, (307) 778-3060 DAYLIGHT CONSULTANT: Hutton Architecture Studio,
www.huttonarch.com GLAZING CONTRACTOR: Thompson Glass Inc.,
www.thompsonglassinc.com
›› Materials Hutton Architecture Studio specified a version of SageGlass that has four levels—2, 6, 20 and 60 percent—of visible light transmission (VLT). The electronically controlled glazing, which on this building faces south and west, allows agents to view outside of the building at any time of day without compromising their comfort or the safety of the drivers coming through the weigh station.
Tubular daylighting devices ensure the workspace receives plenty of daylighting. In addition, the south and west windows are connected to south and west photosensors, respectively, that automatically determine and set the appropriate VLT for the windows. The interior elec- tric lighting also is managed by a photosensor, which dims according to the natural daylight levels. The photosensors may be overridden manually by the staff should the need arise.
Glazing manufacturer: SAGE Electrochromics,
sageglass.com
›› The Retrofit The Torrington Port of Entry serves as a weigh station for the Washington, D.C.-based U.S. Department of Transportation on U.S. Highway 26 at the Nebraska/Wyoming border. Port of Entry agents ensure highway safety by monitoring commercial vehicle and driver compliance with state and federal laws. To effectively do their jobs, the agents need maximum visibility and an unobstructed view at all angles during all times of day in any weather condition. Because the weigh station had significant glare and visibility issues, agents had to wear baseball caps and sunglasses to view oncoming vehicles in the daytime through the large windows facing the road. The new design would be a prototype for other facilities, so the glazing and interior lighting conditions had to be handled with care. The sun-control problem couldn’t be easily solved with shades, blinds or other conventional controls because they
would have blocked the view. With standard glazing, the building would have been in the same glare/visibility predicament. The south and west windows, which now feature SageGlass, are designed to work together. All south-facing windows are tinted to the same level at the same time, and all west-facing windows are tinted to the same level at the same time. However, the south and west windows may be tinted to completely different settings, which is important as the sun moves through the sky.
May-June 2013 // RETROFIT 39
PHOTOS: SAGE ELECTROCHROMICS
PHOTOS: ROOF HUGGER INC.
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