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ASTM C634-01

(Terminology)

Standard Terminology Relating to Environmental Acoustics

Standard Terminology Relating to Environmental Acoustics

SCOPE
1.1 This terminology covers terms and definitions related to environmental acoustics. Only definitions common to two or more standards under the jurisdiction of Committee E-33 are listed here. The purpose of this terminology is to promote uniformity of key definitions. Definitions pertinent to only one standard and exceptions to the definitions listed below are contained in the individual standards and should be used when following those standards.

General Information

Status
Historical
Publication Date
09-Jun-2001
ICS
01.040.91 - Construction materials and building (Vocabularies)
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.07 - Definitions and Editorial
Current Stage
Ref Project

Relations

Replaces
ASTM C634-00 - Standard Terminology Relating to Environmental Acoustics
Effective Date
10-Jun-2001
Replaced By
ASTM C634-02 - Standard Terminology Relating to Environmental Acoustics
Effective Date
10-Apr-2002
Referred By
ASTM E966-18a - Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements
Effective Date
10-Jun-2001
Referred By
ASTM E2235-04(2020) - Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
Effective Date
10-Jun-2001
Referred By
ASTM E1179-13(2019) - Standard Specification for Sound Sources Used for Testing Open Office Components and Systems
Effective Date
10-Jun-2001
Referred By
ASTM E2638-10(2017) - Standard Test Method for Objective Measurement of the Speech Privacy Provided by a Closed Room
Effective Date
10-Jun-2001
Referred By
ASTM E3090/E3090M-22 - Standard Test Methods for Strength Properties of Metal Ceiling Suspension Systems
Effective Date
10-Jun-2001
Referred By
ASTM C522-03(2022) - Standard Test Method for Airflow Resistance of Acoustical Materials
Effective Date
10-Jun-2001
Referred By
ASTM E1289-08(2022) - Standard Specification for Reference Specimen for Sound Transmission Loss
Effective Date
10-Jun-2001
Referred By
ASTM E2179-21 - Standard Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound Transmission Through Concrete Floors
Effective Date
10-Jun-2001
Referred By
ASTM E1780-12(2021) - Standard Guide for Measuring Outdoor Sound Received from a Nearby Fixed Source
Effective Date
10-Jun-2001
Referred By
ASTM E596-22 - Standard Test Method for Laboratory Measurement of Noise Reduction of Sound-Isolating Enclosures
Effective Date
10-Jun-2001
Referred By
ASTM E492-22 - Standard Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine
Effective Date
10-Jun-2001
Referred By
ASTM E1130-16(2021) - Standard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index
Effective Date
10-Jun-2001
Referred By
ASTM E1574-98(2023) - Standard Test Method for Measurement of Sound in Residential Spaces
Effective Date
10-Jun-2001

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ASTM C634-01 - Standard Terminology Relating to Environmental AcousticsASTM C634-01 - Standard Terminology Relating to Environmental Acoustics
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ASTM C634-01 - Standard Terminology Relating to Environmental Acoustics
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 634 – 01
Standard Terminology Relating to
1
Environmental Acoustics
This standard is issued under the fixed designation C 634; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
In some of the entries, those that are measures of physical quantities, the term is followed by three
items: symbol, dimensions, and unit. The symbol, in italics, stands for the magnitude of the quantity
in mathematical expressions. The dimensions of a quantity express its measure in terms of three
fundamental quantities: M for mass, L for length, and T for time. Speed, for instance, is the quotient
obtained when the distance an object moves is divided by the time involved. The dimensions are
−1
[LT ], the negative exponent indicating division. The unit is consistently in SI, Le Système
International d’Unités. Those still using the cgs (centimetre-gram-second) or the inchpound system of
units are referred for most of the conversion factors to Practice E 380. A few conversion factors are
listed in Section 4 of this terminology.
The dimensions of a quantity are the same regardless of the units in which the quantity is measured.
−1
Speed has the dimensions [LT ] whether it is measured in miles per hour, feet per second, or metres
per second. Quantities with different dimensions are not the same. Flow resistance and specific flow
resistance, for instance, are quantities of different kinds even though the names are similar. On the
other hand, quantities with the same dimensions are not necessarily of the same kind. Sound energy
−1 −2
density, for instance, has the same dimensions as sound pressure, [ML T ], but it is not a kind of
2
sound pressure. Nor is absorption with the dimensions [L ] a kind of area.
2
1. Scope Insulation in Buildings
2
E 413 Classification for Rating Sound Insulation
1.1 This terminology covers terms and definitions related to
E 492 Test Method for Laboratory Measurement of Impact
environmental acoustics. Only definitions common to two or
Sound Transmission Through Floor-Ceiling Assemblies
more standards under the jurisdiction of Committee E-33 are
2
Using the Tapping Machine
listed here. The purpose of this terminology is to promote
IEEE/ ASTM SI 10 Standard for Use of the International
uniformity of key definitions. Definitions pertinent to only one
3
System of Units (SI): The Modern Metric System
standard and exceptions to the definitions listed below are
2.2 ANSI Standard:
contained in the individual standards and should be used when
4
ANSI S1.4 Specification for Sound Level Meters
following those standards.
ANSI S1.6 Preferred Frequencies, Frequency Levels, and
2. Referenced Documents
Band Numbers for Acoustical Measurements
ANSI S1.11 Octave-Band and Fractional Octave-Band Ana-
2.1 ASTM Standards:
log and Digital Filters, Specifications for
C 423 Test Method for Sound Absorption and Sound Ab-
2
sorption Coefficients by the Reverberation Room Method
3. Terminology
E 90 Test Method for Laboratory Measurement of Airborne
3.1 Terms and Definitions:
Sound Transmission Loss of Building Partitions and Ele-
2
−4 −1
ments
acoustic impedance, Z [ R + jX; [ML T ]; mks acoustic
3
E 336 Test Method for Measurement of Airborne Sound
ohm (Pa·s/m )—of a surface, for a given frequency, the
complex quotient obtained when the sound pressure aver-
aged over the surface is divided by the volume velocity
1
This terminology is under the jurisdiction of ASTM Committee E33 on
Environmental Acoustics and is the direct responsibility of Subcommittee E33.07 on
Definitions and Editorial.
3
Current edition approved June 10, 2001. Published August 2001. Originally Annual Book of ASTM Standards, Vol 14.02.
4
published as C 634 – 69. Last previous edition C 634 – 00. Available from American National Standards Institute, 11 W. 42nd St., 13th
2
Annual Book of ASTM Standards, Vol 04.06. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C 634
through the surface. The real and imaginary components are
p = 20 μPa, reference sound pressure, and
0
called, respectively, acoustic resistance and acoustic reac-
L = an individual sound pressure level, dB.
i
tance.
If conditions warrant, an integral expression may be used:
acoustical barrier—contiguous objects such as solid walls,
1 t2
buildings, or earthen berms that substantially block the direct
2 2
¯
L 5 10 log ~p ~t!/p ! dt
S * D
p 0
T
path of sound between a source and receiver, and which, if t1
they have an open edge or
...

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ASTM C634-22(Terminology)
Standard Terminology Relating to Building and Environmental Acoustics

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3.1 Definitions—Terms and related definitions given in Section 4 are intended for use uniformly and consistently in all building and environmental acoustic test standards in which they appear.  
3.2 Definitions of Terms Specific to Each Standard:  
3.2.1 As indicated in Section 4, terms and their definitions are intended to provide a precise understanding and interpretation of the building and environmental acoustic test standards in which they appear.  
3.2.2 A specific definition of a given term is applicable to the standard or standards in which the term is described and used.  
3.2.3 Different definitions of the same term are acceptable provided each one is consistent with and is not in conflict with the standard definition for the same term, that is, the general concept the term describes.  
3.2.4 If a standard under the jurisdiction of ASTM Committee E33 specially defines a term, i.e. provides a definition different in any way from what is given in Section 4 of Terminology C634, that standard shall list the term and its description under the subheading, Definitions of Terms Specific to This Standard.
3.2.4.1 Discussion—The mandatory language of section 3.2.4 is consistent with the mandatory language from §E2 of Form and Style for ASTM Standards (April 2020) and with the ASTM Committee E33 bylaws in place when this standard was published; it reflects a situation that exists, it does not prescribe anything.  
3.3 Definitions for some terms associated with building and environmental acoustic issues and not included in Terminology C634 are found in ISO/TR 25417 or IEEE P260.4. When discrepancies exist, the definition in Terminology C634 shall prevail.
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1.1 This terminology covers terms, related definitions, and descriptions of terms used or likely to be used in building and environmental acoustics standards. Definitions of terms are special-purpose definitions that are consistent with the standard definitions but are written to ensure that a specific building and environmental acoustics standard is properly understood and precisely interpreted. The primary focus of this document is upon terms, definitions and descriptions found within standards under the jurisdiction of ASTM Committee E33; however, terms, definitions and descriptions that are of general interest to the field of acoustics are also included.  
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1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM C634-22(Terminology)
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SIGNIFICANCE AND USE
3.1 Definitions—Terms and related definitions given in Section 4 are intended for use uniformly and consistently in all building and environmental acoustic test standards in which they appear.  
3.2 Definitions of Terms Specific to Each Standard:  
3.2.1 As indicated in Section 4, terms and their definitions are intended to provide a precise understanding and interpretation of the building and environmental acoustic test standards in which they appear.  
3.2.2 A specific definition of a given term is applicable to the standard or standards in which the term is described and used.  
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3.2.4.1 Discussion—The mandatory language of section 3.2.4 is consistent with the mandatory language from §E2 of Form and Style for ASTM Standards (April 2020) and with the ASTM Committee E33 bylaws in place when this standard was published; it reflects a situation that exists, it does not prescribe anything.  
3.3 Definitions for some terms associated with building and environmental acoustic issues and not included in Terminology C634 are found in ISO/TR 25417 or IEEE P260.4. When discrepancies exist, the definition in Terminology C634 shall prevail.
SCOPE
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4.1 This test method establishes a selected set of conditions of temperature, relative humidity and rate of evaporation of the environment to which a mortar specimen of stated composition shall be subjected for a specified period of time during which its change in length is determined and designated “drying shrinkage.”  
4.2 The drying shrinkage of mortar as determined by this test method has a linear relation to the drying shrinkage of concrete made with the same cement and exposed to the same drying conditions.4 Hence this test method may be used when it is desired to develop data on the effect of a hydraulic cement on the drying shrinkage of concrete made with that cement.
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5.1 This test method can be used to determine whether the amount of draindown measured for a given asphalt mixture is within specified acceptable levels. The test provides an evaluation of the draindown potential of an asphalt mixture during mixture design and/or during field production. This test is primarily used for mixtures with high coarse aggregate content such as porous asphalt (open-graded friction course) and stone matrix asphalt (SMA).
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1.1 This test method covers the determination of the amount of draindown in an uncompacted asphalt mixture sample when the sample is held at elevated temperatures comparable to those encountered during the production, storage, transport, and placement of the mixture. The test is particularly applicable to mixtures such as porous asphalt (open-graded friction course) and stone matrix asphalt (SMA).  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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This specification covers UNS N06002, UNS N06030, UNS N06035, UNS N06022, UNS N06200, UNS N06230, UNS N06600, UNS N06617, UNS N06625, UNS N08020, UNS N08026, UNS N08024, UNS N08120, UNS N08926, UNS N08367, UNS N10242, UNS N10276, UNS N10665, UNS N10675, UNS N12160, UNS R20033, UNS N06059, UNS N06686, UNS N10629, UNS N08031, UNS N06045, UNS N06025, and UNS R30556 nickel alloy billets and bars for reforging. The products shall be hot worked from ingots by rolling, forging, extruding, hammering, or pressing. The material shall conform to the chemical composition requirements prescribed by the reference material. The chemical composition of the material shall be determined by chemical analysis in accordance with test method E1473.
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1.1 This specification covers UNS N06002, UNS N06030, UNS N06035, UNS N06022, UNS N06200, UNS N10362, UNS N06230, UNS N06600, UNS N06617, UNS N06625, UNS N08020, UNS N08026, UNS N08024, UNS N08120, UNS N08926, UNS N08367, UNS N10242, UNS N10276, UNS N10665, UNS N10675, UNS N12160, UNS R20033, UNS N06059, UNS N06686, UNS N10629, UNS N08031, UNS N06045, UNS N06025, UNS N06699, and UNS R305562 billets and bars for reforging.  
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