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ASTM E413-87(1999)

Current Reaffirmation

Classification for Rating Sound Insulation

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1.1 This classification provides methods of calculating single-number acoustical ratings for laboratory and field measurements of sound transmission obtained in one-third octave bands. The method may be applied to laboratory or field measurements of the sound transmission loss of a partition in which case the single-number ratings are called sound transmission class (STC) or field sound transmission class (FSTC), respectively. The method may also be applied to laboratory and field measurements of the sound isolation between two spaces, in which case the single-number ratings are called the noise isolation class (NIC) or normalized noise isolation class (NNIC).


SDO ASTM: ASTM International
Document Number E413
Publication Date Feb. 10, 1999
Language en - English
Page Count 4
Revision Level 87(1999)
Supercedes
Committee E33.03
Publish Date Document Id Type View
April 1, 2022 E0413-22 Revision
April 1, 2016 E0413-16 Revision
Sept. 1, 2010 E0413-10 Revision
April 1, 2004 E0413-04 Revision
Not Available E0413-73 Revision
Feb. 10, 1999 E0413-87R99 Reaffirmation