Abstract
The American Standards Association recently issued the standard which is reproduced below, complete and unabridged, with their permission. This new standard can be regarded as an up-to-date revision of the ASTM Tentative Recommended Practice for the same measurement (ASTM E 90-50T, later ASTM E 90-55), which was printed in this Journal [23, 686, (1951)]; in 1955 the “Tentative” was deleted from the title, the text remaining unchanged. Some other countries, including Britain and Germany, have standards on this topic (British Standard 2750:1956, and German Standard DIN 52210, both obtainable from the American Standards Association), and a draft exists for an international standard; the latter includes provisions for field measurements as well as laboratory measurements, and for measurements of impact as well as air-borne sounds. At present ASTM Committee E-6 is working to prepare a new Recommended Practice for the measurement of the sound transmission loss of building structures, and will consider the inclusion of field and impact measurements.
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