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  • ASTM E 1300 : 2012

    NA Status of Standard is Unknown
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    Standard Practice for Determining Load Resistance of Glass in Buildings

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-04-2012

    Publisher:  American Society for Testing and Materials

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    1.1 This practice describes procedures to determine the load resistance (LR) of specified glass types, including combinations of glass types used in a sealed insulating glass (IG) unit, exposed to a uniform lateral load of short or long duration, for a specified probability of breakage.

    1.2 This practice applies to vertical and sloped glazing in buildings for which the specified design loads consist of wind load, snow load and self-weight with a total combined magnitude less than or equal to 15 kPa (315 psf). This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves.

    1.3 This practice applies only to monolithic and laminated, glass constructions of rectangular shape with continuous lateral support along one, two, three, or four edges. This practice assumes that (1) the supported glass edges for two, three, and four-sided support conditions are simply supported and free to slip in plane; (2) glass supported on two sides acts as a simply supported beam; and (3) glass supported on one side acts as a cantilever. For insulating glass units, this practice only applies to insulating glass units with four-sided edge support.

    1.4 This practice does not apply to any form of wired, patterned, etched, sandblasted, drilled, notched, or grooved glass with surface and edge treatments that alter the glass strength.

    1.5 This practice addresses only the determination of the resistance of glass to uniform lateral loads. The final thickness and type of glass selected also depends upon a variety of other factors (see 5.3).

    1.6 Charts in this practice provide a means to determine approximate maximum lateral glass deflection. Appendix X1 provides additional procedures to determine maximum lateral deflection for glass simply supported on four sides. Appendix X2 presents a procedure to compute approximate probability of breakage for annealed (AN) monolithic glass lites simply supported on four sides.

    1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

    1.8 Appendix X3 lists the key variables used in calculating the mandatory type factors in Tables 1-3 and comments on their conservative values.

    1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    TABLE 1 Glass Type Factors (GTF) for a Single Lite of Monolithic or Laminated Glass (LG)

    Glass TypeShort Duration Load (3 s)Long Duration Load (30 days)

    TABLE 2 Glass Type Factors (GTF) for Double Glazed Insulating Glass (IG), Short Duration Load

    Lite No. 1
    Monolithic Glass or
    Laminated Glass Type
    Lite No. 2
    Monolithic Glass or Laminated Glass Type

    TABLE 3 Glass Type Factors (GTF) for Double Glazed Insulating Glass (IG), Long Duration Load (30 day)

    Lite No. 1
    Monolithic Glass or
    Laminated Glass Type
    Lite No. 2
    Monolithic Glass or Laminated Glass Type

    General Product Information - (Show below) - (Hide below)

    Committee E 06
    Document Type Standard Practice
    Publisher American Society for Testing and Materials
    Status NA
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM E 1233/E1233M : 2014 Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights, and Curtain Walls by Cyclic Air Pressure Differential
    ASTM F 2248 : 2019 Standard Practice for Specifying an Equivalent 3-Second Duration Design Loading for Blast Resistant Glazing Fabricated with Laminated Glass
    ASTM C 1048 : 2018 Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass
    ASTM E 2751/E2751M : 2017 : REV A Standard Practice for Design and Performance of Supported Laminated Glass Walkways
    ASTM E 330/E330M : 2014 Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference
    ASTM E 2461 : 2012 : R2017 Standard Practice for Determining the Thickness of Glass in Airport Traffic Control Tower Cabs
    ASTM C 1401 : 2014 Standard Guide for Structural Sealant Glazing
    ASTM E 997 : 2015 Standard Test Method for Evaluating Glass Breakage Probability Under the Influence of Uniform Static Loads by Proof Load Testing
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