From Wired Glass to Clear Solutions: Designing with Fire Rated Glass Today

Wired glass was the only fire rated glass (FRG) product available for over 100 years. In traditional wired glass, the embedded wires hold annealed glass in place during the fire test to achieve a fire rating. While the wires give the illusion of increased strength and impact resistance, the opposite is true. Wired glass is not safety glazing. The wires actually weaken the glass, making it half as strong as ordinary window glass. Wired glass breaks easily on human impact, exposing razor sharp wires that can trap a victim’s limb in the opening and increase the severity of the injury. Alarmingly, wired glass is the most commonly used FRG product found in educational facilities, leading to over 2,500 wired glass impact injuries in schools every year. In 1977, the Consumer Product Safety Commission (CPSC) enacted a federal safety glazing standard (16 CFR 1201) to protect people from injury due to accidental impact with glazing. The building codes apply the CPSC standard to require that glazing used in hazardous locations, such as doors and sidelites, must meet minimum Category I and II impact standards, depending on the size of the glazing panel. Smaller glazing panels in sizes up to 1296 square inches must meet the Category I impact test of 150 ft. lbs. Larger glazing panels must meet the higher Category II standard impact test of 400 ft. lbs. of impact resistance. At the time the federal standard was enacted, wired glass manufacturers alleged they lacked the technology make a fire rated product that could meet the new CPSC standards. Since wired glass was the only FRG product available in 1977, the IBC granted wired glass a temporary exemption from meeting the CPSC standard. This exemption allowed wired glass used in fire assemblies to meet a lower ANSI Z97.1 impact standard of 100 ft. lbs., which the CPSC acknowledged was inadequate to protect anyone except children under five. For more information, click on the link below.

http://www.accelacomm.com/jaw/source/47/51344695/

Advances in glazing materials and glass building systems offer a seemingly unlimited horizon for not only glass performance, but also for the size and extent of these light, transparent forms. Both for enclosures and for indoor environments, novel products and assemblies allow for more glass and less opaque structure—often in places that previously limited their use.

Treating Glass as a Canvas

In the world of fine art, a master painter begins with canvas selection. A linen canvas is nearly always selected over cotton because nothing delivers the artist’s authentic vision quite like linen. Similarly, with glass.

True Clarity for Ambitious Design

Clear glass is extremely common and is popular for a variety of architectural design applications, including vision glass, spandrel glass, storefronts, entryways and other exterior uses. It is specified repeatedly due to its versatility and ability to serve as a substrate for solar control, low-emissivity (low-E) coatings. However, when specifying glass to achieve a desired aesthetic, design professionals know that clear glass isn’t completely clear.

Pictured: Boulder Community Health’s West Medical Building, Lafayette, Colo. Photo: 2020 Caleb Tkach

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14 projects recognized by DOE for high-performance building envelope design

The inaugural class of DOE’s Better Buildings Building Envelope Campaign includes a medical office building that uses hybrid vacuum-insulated glass and a net-zero concrete-and-timber community center.

Glass and Glazing | Oct 26, 2021

Façade design for cost, performance, and delivery [AIA course]

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Fire-Rated Products | Oct 21, 2021

Safti First Fights Through Assertions Made By Plaintiffs Ely Holdings Limited And Greenlite Glass Systems That Safti First’s Fire Rated Floor System Infringed On Their Patent

In a summary judgement dated February 3, 2021, Chief Magistrate Joseph C. Spero of the United States District Court for the Northern District of California ruled that the patent infringement claims filed by Ely Holdings Limited (Ely) and Greenlite Glass Systems (Greenlite) against SAFTI FIRST, a USA fire rated glass and framing manufacturer, could not proceed to trial, finding that the SAFTI FIRST’s fire resistant floor does not violate Ely’s patent.