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ASTM F2248-03

ASTM F2248-03

Standard Practice for Specifying an Equivalent 3-Second Duration Design Loading for Blast Resistant Glazing Fabricated with Laminated Glass

2010-12-31 /Historical
Superseeded by:

1.1 This practice sets forth a method to specify an equivalent 3-second design loading suitable to use with Practice E 1300 to select the thickness and type of blast resistant glazing fabricated with laminated glass to glaze a fenestration.

1.2 This practice applies to blast resistant glazing fabricated using laminated glass only, including single laminated glass and insulating glass fabricated with laminated glass.

1.3 This practice assumes that blast resistant glazing shall be adhered to its supporting frame using structural silicone sealant or adhesive glazing tape. The width of the structural silicone sealant bead shall be at least equal to but not larger than two times the thickness designation of the glass to which it adheres. The width of glazing tape shall be at least equal to two times but not more than four times the thickness designation of the glass to which it adheres.

1.4 This practice assumes the framing members shall restrict deflections of edges of blast resistant glazing they support to L/160 under the equivalent 3-second duration design loading as determined herein, where L denotes the length of the supported edge.

1.5 This practice assumes the framing system supporting the blast resistant glazing shall attach mechanically to the structural framing system with fasteners that will resist forces generated by a uniform load acting on the blast resistant glazing that has a magnitude at least 2.0 times the magnitude of the 3-second equivalent design load as determined herein.

1.6 The equivalent 3-second design load as determined herein shall not apply to the design of monolithic glazing, plastic glazing, or security film applied to existing glazing configurations in an attempt to achieve blast resistance.

1.7 the values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only. For conversion of quantities in various systems of measurements to SI units refer to ANSI/IEEE/SI 10.

1.8 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.

air blast pressure; blast resistant glazing; explosion; insulating glass; laminated glass; specified design load
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