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About This Item
Full Description
1.1 The sound isolation between two spaces in a building is determined by a combination of the direct transmission through the nominally separating building element (as normally measured in a laboratory) and any transmission along a number of indirect paths, usually referred to as flanking paths. Fig. 1 illustrates the direct paths and some possible structural flanking paths. Additional non-structural flanking paths may include transmission through common air ducts between rooms, or doors to the corridor from adjacent rooms.
1.2 The main part of this test method defines procedures and metrics to assess the sound isolation between two rooms or portions thereof in a building separated by a common partition including both direct and flanking transmission paths or the apparent sound insulation of the separating partition. Appropriate measures and their single number ratings are the noise reduction (NR) and noise isolation class (NIC), the normalized noise reduction (NNR) and normalized noise isolation class (NNIC), and the apparent transmission loss (ATL) and apparent sound transmission class (ASTC). With the exception of the ATL and ASTC under specified conditions, these procedures in the main part of the test method are only applicable when both room volumes are less than 150 m³.
Note 1 - The word "partition" in this test method includes all types of walls, floors, or any other boundaries separating two spaces. The boundaries may be permanent, operable, or movable.
1.3 Annex A1 provides methods to assess the sound transmission through a partition or partition element with the influence of flanking transmission reduced. These methods may be used when it must be demonstrated that a partition has achieved a specified minimum sound attenuation. The results are the field transmission loss (FTL) and field sound transmission class (FSTC).
1.4 Annex A2 provides methods to measure the sound isolation between portions of two rooms in a building separated by a common partition including both direct and flanking paths when at least one of the rooms has a volume of 150 m³ or more. The results are the noise reduction (NR) and noise isolation class (NIC).
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.7 This standard may involve hazardous materials, operations, and equipment. 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 and health practices and determine the applicability of regulatory limitations prior to use.
Document History
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ASTM E336-23
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Most Recent
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ASTM E336-20
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-19a
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-19
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-17a
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-17
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-16a
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-16
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-15
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-14
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-11
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-10
viewing
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-09
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-08
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-07
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings- Historical Version
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ASTM E336-05
Standard Test Method for Measurement of Airborne Sound Insulation in Buildings- Historical Version
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ASTM E336-97e1
Standard Test Method for Measurement of Airborne Sound Insulation in Buildings- Historical Version
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ASTM E336-97
Standard Test Method for Measurement of Airborne Sound Insulation in Buildings- Historical Version