ASTM E989撞击缓冲等级(IIC)测定的标准分类
日期:2012-02-08 11:54
ASTM E989 Standard Classification for Determination of Impact Insulation Class (IIC)
ASTM E989撞击缓冲等级(IIC)测定的标准分类
The rating increases as the impact sound attenuation of the floor ceiling structure increases. The rating can be used by architects, builders, and specification and code authorities for acoustical design purposes in building constructions.
4.2 The rating strictly only applies to excitation by the standard tapping machine defined in Test Methods E 492 and E 1007. It does
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