Codes & Standards May 2023

ASC Aims to Update Standard on Safety Glazing Materials Used in Buildings

The Accredited Standards Committee (ASC) seeks to update ANSI Z97.1-2015 (R2020), Safety Glazing Materials Used in Buildings—Safety Performance Specifications and Methods of Test.

The ANSI Z97.1-2015 (R2020) standard sets specifications and testing methods for safety glazing materials in building and architectural applications. These glazing materials are designed to enhance safety and decrease the risk of cutting and piercing injuries from human contact. The standard is intended to provide minimum requirements recommended for use, adoption and enforcement by federal, state and local authorities.

Safety glazing is used in various applications, including commercial glass, bathrooms and shower glass, doors, windows and shop-fronts. It comes in different types, such as tempered and laminated glass.

Task Groups Formed

The purpose of the possible revisions is to keep the standard current with product use related to safety glass, states Julia Schimmelpenningh, ASC Z97 secretary and architectural industry technical manager for the Advanced Material Interlayers business of Eastman Chemical Company. This includes new methodologies and technologies related to glass and glazing in buildings.

Schimmelpenningh says four task groups have been formed. The groups will look at the title and scope of the standard, develop a new impactor to be used as an alternative to a lead-filled shot bag, ensure references are current and methods reference consensus American Society for Testing and Materials (ASTM) whenever possible, and review miscellaneous items that have been introduced via ballots.

FGIA Updates Thermal Cycling Standard

The Fenestration and Glazing Industry Alliance (FGIA) has updated a document that provides methods to evaluate the damage caused by thermal cycling on large exterior fenestration components and cladding. The document, AAMA 501.5-23, Test Method for Serviceability of Exterior Fenestration After Thermal Cycling, was last updated in 2007.

Steve Fronek of Apogee Enterprises chairs the Test Method for Thermal Cycling of Exterior Wall Review Task Group. He says AAMA 501.5 has been used for more than 20 years to assess the serviceability of various exterior wall products after thermal cycling.

Thermal cycling is a method that involves heating and cooling a material or a device between two temperature extremes at a certain rate and duration. It evaluates a product’s design and material defects that will face varying temperatures.

“In this update, the thermal cycling test method was aligned with the recently published AAMA 501.9 surface temperature assessment for condensation evaluation,” says Fronek. “A more-repeatable and more-representative cycling protocol based on exterior ambient air temperature has been adopted.

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