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ASTM E1289-08

(Specification)

Standard Specification for Reference Specimen for Sound Transmission Loss

Standard Specification for Reference Specimen for Sound Transmission Loss

ABSTRACT
This specification describes the construction and installation of standard reference specimens for quality control of laboratory sound transmission loss measurements. The reference specimen is composed of framed steel panels. The required materials for fabrication and installation are as follows: galvanized sheets, frame, and panels. Four kinds of installation may be done: Installation A using a single layer reference specimen, Installation B using double layer reference specimen with a common plate, Installation C using double layer reference specimen with separate plates-empty cavity, and Installation D using double layer reference specimen with separate plates and added layer of sound-absorbing material in the cavity.
SCOPE
1.1 This specification describes the construction and installation of standard reference specimens for quality control of laboratory sound transmission loss measurements using Test Method E 90.
1.2 Laboratories may choose to construct and test all of the reference specimens described here or only a subset. Specific specimens may be required by a test method or an accrediting agency.
1.3 &si-value;

General Information

Status
Historical
Publication Date
14-Jan-2008
ICS
17.140.01 - Acoustic measurements and noise abatement in general
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.03 - Sound Transmission
Current Stage
Ref Project

Relations

Replaces
ASTM E1289-97(2003) - Standard Specification for Reference Specimen for Sound Transmission Loss
Effective Date
15-Jan-2008
Referred By
ASTM C634-22 - Standard Terminology Relating to Building and Environmental Acoustics
Effective Date
15-Jan-2008
Referred By
ASTM E90-09(2016) - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
Effective Date
15-Jan-2008

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ASTM E1289-08 - Standard Specification for Reference Specimen for Sound Transmission LossASTM E1289-08 - Standard Specification for Reference Specimen for Sound Transmission Loss
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ASTM E1289-08 - Standard Specification for Reference Specimen for Sound Transmission Loss
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E1289 −08
StandardSpecification for
1
Reference Specimen for Sound Transmission Loss
This standard is issued under the fixed designation E1289; 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 (´) indicates an editorial change since the last revision or reapproval.
1
1. Scope
Blind rivets—diameter, 3.2 mm ( ⁄8 in. ).
Duct tape, 50 mm (2 in.) wide.
1.1 This specification describes the construction and instal-
Drywall screws, Type W—length, 32 mm (1.25 in.).
lation of standard reference specimens for quality control of Bolts #10–24 —25 mm (1 in.) long with appropriate nuts and washers.
Fasteners, to hold wood frame to the perimeter of the test opening.
laboratory sound transmission loss measurements using Test
Non-hardening, caulking,
Method E90.
Nominal 2 by 4 in. wood framing, approximately 40 by 90 mm.
NOTE 1—The quantity and length of each component needed depends
1.2 Laboratories may choose to construct and test all of the
on the size of the laboratory test opening.
reference specimens described here or only a subset. Specific
NOTE 1—To simplify cleaning, the wood framing used to support the
specimens may be required by a test method or an accrediting
steel panels may be painted.
agency.
4.1.2 The weight of each component of the reference
1.3 The values stated in SI units are to be regarded as
specimen and the assembled specimen shall be measured and
standard. The values given in parentheses are for information
kept on record. In addition, the thickness of each of the steel
only.
panels shall be measured in six locations. (See Appendix X1.)
2. Referenced Documents
4.2 Assembly:
2
2.1 ASTM Standards: 4.2.1 Galvanized Sheets—The length of each galvanized
C634 Terminology Relating to Building and Environmental sheet shall be a few millimetres less than the height of the
Acoustics laboratory test opening. The total width of all the sheets shall
E90 Test Method for Laboratory Measurement of Airborne be a few millimetres less than the width of the laboratory test
Sound Transmission Loss of Building Partitions and opening. This may require that one or more sheets be cut
Elements lengthwise.The intent is that, when installed, the panels fill the
test opening completely.
3. Terminology
4.2.2 Frame—Cut steel right angles to size to form a frame
3.1 Definitions—For definitions of terms used in this for each sheet; the frame shall have the same outside dimen-
specification, see Terminology C634. sions as the sheets. Notch and weld the steel angles to form the
four corners of the frame as shown in Fig. 1. Alternatively,
4. Construction of Reference Specimen
miter the angles and weld similarly. Smooth corners after
4.1 General: welding.
4.1.1 The reference specimen is composed of framed steel 4.2.3 Panels—Construct a panel by riveting steel sheets to
panels. The required materials for fabrication and installation the frames as follows:0
are as follows: 4.2.3.1 Drill holes at 100 mm (4 in.) on-center around the
perimeterofthesheetsfortheinstallationoftheblindrivets.To
Galvanized steel sheets—width, 1220 mm (4 ft); nominal thickness, 0.63 mm
2
(24 gauge). The weight of the sheets shall be 5.1 ± 0.7 kg/m (1.05 ± 0.15 lb/
ensure proper alignment of the sheets with the frame, it is
2
ft ).
recommended to drill a few holes and then install rivets to hold
1
Steel right angles with 25-mm (1-in.) flanges—metal thickness, 3.2 mm ( ⁄8 in.).
the sheet in place. Once this is done, the remaining holes may
be drilled and the rivets installed. Position these holes to avoid
1
This specification is under the jurisdiction of ASTM Committee E33 on conflict with the clearance holes described in 4.2.3.2.
Building and Environmental Acoustics and is the direct responsibility of Subcom-
5
4.2.3.2 Drill 4 mm ( ⁄32 inch) diameter holes through the
mittee E33.03 on Sound Transmission.
horizontal members of the frame and sheet as shown in Fig. 2.
Current edition approved Jan. 15, 2008. Published February 2008. Originally
These are clearance holes for the drywall screws used to attach
approved in 1989. Last previous edition approved in 1997 as E1289 – 97(2003).
DOI: 10.1520/E1289-08.
the panel to the wood plate (see 5.4). Drill similar holes
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
through the vertical members of the panels that will be used to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
attach the assembled specimen to the vertical wood plates. The
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. spacing between these holes is not important.
Copyright © ASTM International, 100 Barr Harbor Drive, PO
...

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This specification states the requirements for sound sources used for measuring the speech privacy between open offices or for measuring the laboratory performance of acoustical components. The sound source shall be a loudspeaker enclosed in a box that has a maximum dimension of 0.30 m (1 ft) on a side, to reduce spurious sound reflections. The measurements shall be carried out in a free sound field. The measurement microphone, amplifier, and level meter used to measure sound pressure levels shall satisfy the requirements prescribed. When the sound source is driven with the qualification signal, the sound output shall be adequate to maintain one-third octave-band sound pressure levels at least 10 dB above the corresponding background noise in each band at each measurement location. The directivity of the sound source shall be verified by driving the source with the qualification signal and measuring the sound pressure levels at measurement points.
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SIGNIFICANCE AND USE
4.1 Each weighting factor given in Table 1 represents the fraction of overall speech intelligence contained within the associated one-third octave frequency band.  
4.2 The weighting factors in Table 1 are obtained by multiplying each individual one-third octave band weighting factor of ANSI S3.5-1969 by 300. Articulation class (AC) values are thus related to but distinctly different from articulation index (AI) values. In particular, the AC considers only the effect of signal attenuation; while the AI considers such additional factors as speech level and spectrum and background sound level and spectrum.
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SCOPE
1.1 This classification provides a single figure rating that can be used for comparing building systems and subsystems for speech privacy purposes. The rating is designed to correlate with transmitted speech intelligence between office spaces.  
1.2 Excluded from the scope of this classification are applications involving female speakers or children,2 languages other than English, and sound spectra other than speech. Thus excluded, for example, would be comparisons of building systems or subsystems for their effectiveness in reducing transmitted noise from machinery, industrial processes, bowling alleys, music rooms, places of entertainment, and the like.  
Note 1: Published work by Pearsons, et al, may eventually permit the restriction on female speakers to be relaxed.3  
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5.1 This guide can be used to produce a specification for the acoustical performance of an enclosure.  
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5.3.1 This guide calls for measurements common within acoustical practice.  
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5.6 The type of specification that should be selected depends both on the purpose of the enclosure and how crucial its performance is. In general:  
5.6.1 If exceeding a particular maximum permissible sound pressure level spectrum would render the enclosure unsuccessf...
SCOPE
1.1 The guide covers the development of criteria for the acoustical performance of a broad variety of acoustical enclosures by identifying information necessary to unambiguously describe acoustical performance. This guide is not a standard ASTM specification for a sound-isolating enclosure.  
1.2 Excluded from the scope of this guide are technical considerations for enclosure design that do not pertain directly to acoustical performance.  
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.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Guide
    7 pages
    English language
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