B2020−Exterior Windows

Category Archives: B2020−Exterior Windows

Overlooked Considerations for Windows and Curtain Walls

Photo © BigStockPhoto/Zhiwei Zhang

The primary factors most designers consider when selecting window and curtain wall systems for their projects tend to involve cost, appearance, and energy efficiency. However, other considerations—such as weatherproofing, performance, and durability—can also be critical. Understanding material options, along with aspects like performance data and perimeter detailing are crucial.

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Testing Glazing in the Field: Performance Classes

Up until the 2008 edition of American Architectural Manufacturers Association/Window and Door Manufacturers Association/Canadian Standards Association (AAMA/WDMA/CSA) 101/I.S.2/A440, North American Fenestration Standard/Specification for Windows, Doors, and Skylights (NAFS), there were five performances classes of windows with differing requirements for test pressures, allowed leakage rates, and other variables. This sidebar discusses the current four types, and their minimum performance grades.

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Testing Glazing in the Field: Specifying procedures now avoids trouble later

Photo © Bruce Damonte. Photo courtesy Wausau

Laboratory testing of fenestration products to the North American Fenestration Standard/Specification for Windows, Doors, and Skylights (NAFS) verifies the performance of a specimen of the fenestration product itself. How can one be certain the specified performance will be realized after installation? When properly applied, field testing can be a useful way to verify actual installed performance during construction and prior to occupancy of a building. The key is testing in conditions that accurately simulate the real-world environment and ensuring that the appropriate test method is applied to the specific installation.

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Security Glazing for Safer Schools: Trends in School Safety

Parents and administrators across the country are clamoring for solutions to make their children’s schools more secure. Areas of K−12 educational projects under significant scrutiny are doors and windows—and, more specifically, the glass. For extra school security, laminated security glass can be an easy and cost-effective measure to assist in protecting against forced entry and providing bullet resistance. Between 1999 and 2009, various school security measures have been implemented.

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Security Glazing for Safer Schools

Photo courtesy Graham Architectural Products

Parents and administrators across the country are clamoring for solutions to make their children’s schools more secure. Areas of K−12 educational projects under significant scrutiny are doors and windows—and, more specifically, the glass. For extra school security, laminated security glass can be an easy and cost-effective measure to assist in protecting against forced entry and providing bullet resistance.

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Spontaneous Glass Breakage: Why it happens and what to do about it

Photo © Wes Thompson. Photo courtesy PPG

The past few years have seen several highly publicized incidents involving window and balcony glass breaking spontaneously and falling from high-rise buildings. It is important to have an overview on the potential causes of spontaneous glass breakage, including some common misconceptions about its actual spontaneity. As a means of protection, some fabricators and glazing contractors offer heat-soaking of tempered glass as a potential solution—but what are the risks involved?

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