ASTM C1172-24e1 PDF

Full title and description

ASTM C1172-24e1 — Standard Specification for Laminated Architectural Flat Glass. This specification establishes quality and performance requirements for cut sizes of flat laminated glass made from two or more lites bonded with an interlayer for use in building glazing, including applications for safety, security, detention, hurricane/cyclic-wind resistance, blast and bullet resistance, and sound reduction glazing.

Abstract

Specifies acceptance criteria, required tests, and dimensional/appearance requirements for laminated architectural flat glass produced in cut sizes. The standard identifies applicable test procedures (impact for safety glazing; missile impact and cyclic pressure; security/detention/bullet/burglary resistance tests), dimensional tolerances (overall bow and warp, size), and notes that optical distortion evaluation is outside the current scope (mockups recommended).

General information

• Status: Active standard (current edition with amendment e1).
• Publication date: Published September 1, 2024; amended edition identified as C1172-24e1. (ASTM catalog lists the 2024 designation with e1 amendment).
• Publisher: ASTM International.
• ICS / categories: 81.040.20 — Glass in building / Architectural glass.
• Edition / version: C1172-24e1 (revision of C1172-19 / C1172-24 series).
• Number of pages: 7 pages (compact specification length).

Scope

The standard covers quality requirements for flat laminated glass made of two or more lites bonded by an interlayer for building and related applications. Depending on ply and interlayer construction, laminates covered may be intended for safety glazing, security/detention glazing, hurricane/cyclic-wind resistance, blast and bullet resisting glazing, burglary resisting glazing, sound reduction, and decorative uses. Optical distortion evaluation is excluded and mockups are recommended for optical assessment.

Key topics and requirements

• Definition of laminated architectural flat glass and acceptable construction (number/thickness/treatment of lites and interlayers).
• Mandatory test methods and performance criteria, including: impact test for safety glazing; missile impact and cyclic pressure testing (hurricane/cyclic-wind resistance); tests for security and detention glazing; tests for bullet-resisting and burglary-resisting glazing.
• Dimensional and flatness criteria: overall bow, warp, and size tolerances for cut sizes.
• Requirements for documentation and identification of laminate construction and intended application (e.g., security rating, ballistic resistance class).
• Exclusion of optical distortion evaluation from the normative scope; recommendations for mockups and appendix guidance for optical matters.

Typical use and users

Used by glass fabricators, laminated glass manufacturers, specifiers, architects, façade and curtain wall engineers, glazing contractors, building code officials, security consultants, and testing laboratories. Typical applications include storefronts, curtain walls, entrances, detention/security glazing, hurricane-resistant glazing, blast- or bullet-resistant assemblies, and sound-control partitions.

Related standards

Frequently referenced standards and complementary documents include ASTM C1036 (Flat Glass), ASTM C1048 (Heat-Treated Flat Glass), ASTM E1300 (Structural Performance of Glass in Buildings), ASTM E2190 / E2190-series (insulating glass units and related references), and ASTM E2751 (design/performance of supported laminated glass), among others used for structural, thermal, and safety performance. It also supersedes/revises previous C1172 editions.

Keywords

laminated glass; interlayer; safety glazing; security glazing; hurricane-resistant; blast resistant; bullet resistant; sound reduction; annealed; heat-treated; bow; warp; dimensional tolerances; architectural glazing.

FAQ

Q: What is this standard?

A: ASTM C1172-24e1 is the ASTM specification that defines quality and test/performance requirements for laminated architectural flat glass used in building glazing applications.

Q: What does it cover?

A: It covers construction and acceptance criteria for laminated flat glass (two or more lites bonded with an interlayer), required test methods for different performance categories (safety, security, hurricane, blast, ballistic, sound reduction), and dimensional/flatness tolerances; optical distortion evaluation is not included in the normative scope.

Q: Who typically uses it?

A: Glass manufacturers and laminators, architects and façade engineers, glazing contractors, testing labs, security and detention system specifiers, and code officials use this standard when specifying or verifying laminated glazing performance.

Q: Is it current or superseded?

A: The designation C1172-24e1 is an active, current ASTM specification (a revision in the C1172-24 series with the e1 amendment). It revises prior C1172 editions (including C1172-19 / earlier 24 edition references). Users should confirm any amendments or errata from ASTM before final specification.

Q: Is it part of a series?

A: Yes — C1172 is part of a family of glass-related ASTM documents and is frequently used alongside other ASTM glass standards (e.g., C1036, C1048, E1300, E2190, E2751) that address flat glass types, heat treatment, structural performance, insulating units, and design practices for laminated glass.

Q: What are the key keywords?

A: Laminated, interlayer, safety, security, hurricane, blast, bullet, sound reduction, annealed, heat-treated, bow, warp, dimensional tolerances.