ASTM E989撞击缓冲等级(IIC)测定的标准分类
日期:2012-02-08 11:54
not deal with low frequency sounds below 100 Hz that are typically generated below lightweight joist floors when they are walked on. Nor does it deal with the squeaking, crunching or rattling sounds that can occur in joist construction when elements in the construction are loose and occupants walk on the floor.
4.3 This classification shall only be used with one-third octave band data.
1. Scope
1.1 This classification provides a method for determining a rating that can be used to compare the le
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