ASTM E1300-24 PDF

Full title and description

ASTM E1300-24 — Standard Practice for Determining Load Resistance of Glass in Buildings. Provides procedures, mandatory factors, charts, and appendices to determine the load resistance (LR) and approximate deflection of specified glass types and typical glass constructions (monolithic, laminated, insulating glass units) in building glazing when exposed to uniform lateral loads (wind, snow, self-weight) for a specified probability of breakage.

Abstract

This practice establishes methods to evaluate the lateral load resistance and approximate deflection of common architectural glass types and assemblies under uniform lateral pressure. It includes type factors, load-duration considerations, charts for non‑factored load conditions, and supplemental appendices for deflection and probability-of-breakage calculations. The document is intended to support designers, glazing consultants, and manufacturers in selecting glass type and minimum thickness for typical vertical and sloped glazing applications.

General information

• Status: Current (active).
• Publication date: March 1, 2024 (designated E1300-24; standard updated April 9, 2024 in publisher records).
• Publisher: ASTM International.
• ICS / categories: 81.040.30 (Glass products / architectural glass).
• Edition / version: E1300-24 (2024 revision).
• Number of pages: 65.

Scope

Specifies procedures to determine the load resistance of specified glass types, including combinations used in sealed insulating glass units, exposed to uniform lateral loads of short or long duration for a given probability of breakage. Applies to vertical and sloped glazing where combined design loads (wind, snow, self-weight) do not exceed the stated limit (typical limit in this edition up to 15 kPa / 315 psf). The practice applies to rectangular monolithic and laminated glass with continuous lateral support on one to four edges and to insulating glass units with four‑sided support. Exclusions include balustrades, glass floor panels, aquariums, structural glass members, glass shelves, and glass with treatments that reduce strength (wired, patterned, sandblasted, drilled, notched, grooved, etc.).

Key topics and requirements

• Procedures for calculating load resistance (LR) for monolithic, laminated, and insulating glass exposed to uniform lateral pressure.
• Mandatory type factors and tables for different glass types (annealed, heat‑strengthened, fully tempered, laminated, insulating units).
• Limits on applicable design loads and supported configurations (one‑ to four‑sided support; IG units limited to four‑sided support).
• Charts and methods to estimate center‑of‑glass lateral deflection; appendices provide additional deflection procedures.
• Probability of breakage concepts for short and long duration loads and guidance for selecting thickness for a specified breakage probability.
• Assumptions and required conditions (e.g., glass free of edge damage, properly glazed, realistic surface condition, sufficiently stiff edge support limiting edge deflection).
• Exclusions and limitations: does not address effects of deflection on IG seal performance, aesthetic deflection issues, blast/seismic/post‑breakage behavior—users must consider additional factors and codes.
• SI units are the standard; US customary units provided for information.

Typical use and users

Used by structural and façade engineers, architects, glazing and curtain wall consultants, glass manufacturers, fabricators, product certifiers, and building code officials to select glass type and minimum thickness for typical vertical and sloped glazing against wind and snow loads. Also used in preparing specifications, performing peer reviews, and checking manufacturer load tables for storefronts, windows, curtain walls, and skylights (within the standard's stated limits).

Related standards

Commonly used alongside other glazing and safety standards and building code provisions such as safety glazing standards, insulating glass and laminated glass specifications, and local building code load and design requirements. Typical companion documents include standards covering glass manufacturing and tempering, safety glazing, and design loads and load combinations used by building codes.

Keywords

load resistance, glass, annealed glass, heat‑strengthened glass, fully tempered glass, laminated glass, insulating glass unit, monolithic glass, lateral load, wind load, snow load, deflection, probability of breakage, glazing, facade design, type factors.

FAQ

Q: What is this standard?

A: ASTM E1300-24 is a practice that provides procedures and charts to determine the load resistance and approximate lateral deflection of common architectural glass types and assemblies under uniform lateral loads for a specified probability of breakage.

Q: What does it cover?

A: It covers calculation methods, mandatory type factors, load/deflection charts, and appendices for probability‑of‑breakage and deflection for rectangular monolithic, laminated, and insulating glass units in typical vertical and sloped glazing with specified edge support conditions. It does not cover specialized applications (e.g., glass floors, structural glass members) or treated/altered glass that reduces strength.

Q: Who typically uses it?

A: Structural engineers, façade designers, architects, glazing consultants, glass manufacturers, fabricators, and code reviewers who need to size glass and check load resistance for windows, curtain walls, storefronts, and skylights within the standard's applicability.

Q: Is it current or superseded?

A: This edition (E1300-24) is the current active version of the practice (2024 revision). Users should confirm that they are using the latest edition or any applicable local amendments when applying the standard.

Q: Is it part of a series?

A: E1300 is a standalone ASTM practice within the ASTM E06 committee portfolio addressing building glazing and glass performance; it is commonly used in conjunction with other ASTM standards and building code provisions related to glazing, safety glazing, insulating glass, and structural design.

Q: What are the key keywords?

A: load resistance, glazing, glass strength, probability of breakage, deflection, annealed, heat‑strengthened, tempered, laminated, insulating glass unit, wind load, snow load.