1.1 本实施规程规定了一种方法，用于规定适用于实践的等效3秒设计荷载 E1300 选择由夹层玻璃制成的防爆玻璃的厚度和类型，为窗户上釉。建议用于制造夹层玻璃的玻璃层为退火玻璃或热强化玻璃。对于尺寸大于1.8 m×2.4 m（6 ft×8 ft）的玻璃嵌板，应谨慎使用该玻璃分析方法，因为该尺寸的嵌板超过了本标准所依据的测试数据库。 1.2 本规程适用于仅使用夹层玻璃制造的防爆玻璃，包括单层夹层玻璃和使用夹层玻璃制造的中空玻璃。 作为最低要求，中空玻璃的内侧（受保护侧）应使用夹层玻璃。 1.3 本规程假设，应使用捕获的咬合物将防爆玻璃连接到其支撑框架上，以便在发生爆炸事件时不会分离。 1.4 使用本规程设计的防爆玻璃建议夹层玻璃使用退火或热强化玻璃层。喷砂试验表明，当在喷砂过程中断裂时，使用全钢化玻璃层的喷砂后性能比退火或热强化玻璃层差。 使用全钢化玻璃层制造的夹层玻璃在断裂后有离开支撑玻璃系统框架的趋势，而使用退火或热强化玻璃层制造的夹层玻璃将保留在框架中，并通过拉伸膜行为吸收剩余载荷。使用退火或热强化玻璃层也将减少转移到结构中的负荷量。 1.5 本文确定的等效3秒设计荷载不适用于为达到抗爆性而应用于现有玻璃配置的单片玻璃、塑料玻璃或安全膜的设计。 1.6 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。有关将各种测量系统中的量转换为国际单位制的信息，请参阅ANSI IEEE/SI 10。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本规程提供了适用于确定由夹层玻璃或由夹层玻璃制成的中空玻璃组成的防爆玻璃尺寸的设计荷载。 5.2 由夹层玻璃或由夹层玻璃制成的中空玻璃组成的防爆嵌装玻璃的尺寸应能够使用实践中描述的程序抵抗本标准实践中3秒持续时间的等效设计荷载 E1300 . 5.3 如果由夹层玻璃组成的防爆玻璃或由使用3- 本文确定的第二持续时间荷载，在第一次出现等于本文确定的第三持续时间设计荷载的荷载时，防爆玻璃的断裂概率将小于或等于8 lites/1000。 5.4 当作为防爆玻璃系统的一部分适当支撑时，设计用于抵抗本文确定的3秒等效荷载的防爆玻璃，其设计用于将试验方法中定义的危险降至最低 F2912 .

1.1 This practice sets forth a method to specify an equivalent 3-second design loading suitable to use with Practice E1300 to select the thickness and type of blast resistant glazing fabricated with laminated glass to glaze a fenestration. Glass plies used to construct laminated glass are recommended to be either annealed or heat strengthened glass. This analytical method for glazing should be used with caution for glazing panels larger than 1.8 m by 2.4 m (6 ft by 8 ft) as this size panel exceeds database of testing upon which this standard is based. 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. As a minimum, insulating glass shall use laminated glass for the inboard (protected side) lite. 1.3 This practice assumes that blast resistant glazing shall be attached to its supporting frame using a captured bite so that it does not detach in the event of fracture due to a blast event. 1.4 Blast resistant glazing designed using this practice recommends the use of annealed or heat strengthened glass plies for the laminated glass. Blast testing has shown that use of fully tempered glass plies, when fractured during a blast event, have poorer post blast performance than annealed or heat strengthened glass plies. Laminated glass fabricated with fully tempered glass plies has a tendency to leave the supporting glazing system frame after fracture whereas laminated glass fabricated with annealed or heat strengthened glass plies will remain in the frame and absorb remaining load through tensile membrane behavior. Use of the annealed or heat strengthened glass plies will also reduce the amount of load transferred into the structure. 1.5 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. 1.6 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. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This practice provides a design load suitable for sizing blast resistant glazing comprised of laminated glass or insulating glass fabricated with laminated glass. 5.2 Blast resistant glazing comprised of laminated glass or insulating glass fabricated with laminated glass shall be sized to resist the 3-second duration equivalent design loading from this standard practice using the procedures described in Practice E1300 . 5.3 In the event a blast loading does not occur to blast resistant glazing comprised of laminated glass or insulating glass fabricated with laminated glass sized using the 3-second duration loading determined herein, the blast resistant glazing will have a probability of breakage less than or equal to 8 lites per 1000 at the first occurrence of a loading equal to the 3-second duration design loading determined herein. 5.4 Blast resistant glazing designed to resist the 3-second equivalent load as determined herein, when properly supported as part of a blast resistant glazing system, is designed to perform to minimal hazard as defined in Test Method F2912 .