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ASTM C367/C367M-16

(Test Method)

Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels

Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels

SIGNIFICANCE AND USE
4.1 Knowledge of hardness is useful in the development and the quality control of acoustical tile and lay-in ceiling panels. Deviation from an established hardness range will assist in pointing out processing errors or defective raw materials, thereby aiding the maintenance of uniform product quality.  
4.2 This property is also useful in comparing the relative abilities of materials to resist indentations on the panel surface caused by impacts.  
4.3 Since the hardness varies with the thickness, only samples of the same thickness shall be directly compared.
SCOPE
1.1 These test methods cover the determination of the strength properties of prefabricated architectural acoustical tile or lay-in ceiling panels as follows:    
Tests  
Sections  
Hardness  
4 to 9    
Friability  
10 to 16  
Sag  
17 to 23  
Transverse strength  
24 to 30  
1.2 Not all of the tests described in these test methods are necessary to evaluate any particular product for a specific use. In each instance, it is necessary to determine which properties are required.  
1.3 These test methods specify procedures that are used in product development, manufacturing control, specification acceptance, and service evaluation.  
1.4 Properties determined by these test methods reflect the performance of the materials under the specific conditions of the test, and do not necessarily indicate performance under conditions other than those specified herein.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems will result in non-conformance with the standard.  
1.6 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.

General Information

Status
Historical
Publication Date
30-Apr-2016
ICS
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.04 - Application of Acoustical Materials and Systems
Current Stage
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ASTM C367/C367M-16 - Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling PanelsASTM C367/C367M-16 - Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels
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ASTM C367/C367M-16 - Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels
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REDLINE ASTM C367/C367M-16 - Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling PanelsREDLINE ASTM C367/C367M-16 - Standard Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels
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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: C367/C367M − 16
Standard Test Methods for
Strength Properties of Prefabricated Architectural
1
Acoustical Tile or Lay-In Ceiling Panels
This standard is issued under the fixed designation C367/C367M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Materials used for absorbing sound generally have a porous, low-density structure. In comparison
with many building materials they are relatively fragile. Materials are available that possess adequate
strengthandstabilityandatthesametimeprovidegoodsoundabsorption.Thetestmethodsdescribed
here cover procedures for evaluating those physical properties related to strength.The methods are of
use in developing, manufacturing, and selecting acoustical tile or lay-in panels.
Keep in mind that a property related to strength is only one of several considerations important in
judging the usefulness of an acoustical material. For example, a material judged to be quite weak by
one of these tests is still desired for other reasons, and with adequate precautions, is shipped and
installed successfully.
1. Scope shall be used independently of the other. Combining values
from the two systems will result in non-conformance with the
1.1 These test methods cover the determination of the
standard.
strength properties of prefabricated architectural acoustical tile
1.6 This standard does not purport to address all of the
or lay-in ceiling panels as follows:
safety concerns, if any, associated with its use. It is the
Tests Sections
Hardness 4 to 9 responsibility of the user of this standard to establish appro-
Friability 10 to 16
priate safety and health practices and determine the applica-
Sag 17 to 23
bility of regulatory limitations prior to use.
Transverse strength 24 to 30
1.2 Not all of the tests described in these test methods are
2. Referenced Documents
necessary to evaluate any particular product for a specific use.
2
2.1 ASTM Standards
In each instance, it is necessary to determine which properties
are required. C634Terminology Relating to Building and Environmental
Acoustics
1.3 These test methods specify procedures that are used in
product development, manufacturing control, specification
3. Terminology
acceptance, and service evaluation.
3.1 Terms defined in Terminology C634.
1.4 Properties determined by these test methods reflect the
3.1.1 acoustical material
performance of the materials under the specific conditions of
3.1.2 sound absorption
the test, and do not necessarily indicate performance under
3.2 Definitions of Terms Specific to This Standard:
conditions other than those specified herein.
3.2.1 fissures—irregular depressions of varying lengths
1.5 The values stated in either SI units or inch-pound units
widths, and depths extending below the basic product face.
are to be regarded separately as standard. The values stated in
3.2.2 friable—easily crumbled.
each system are not exact equivalents; therefore, each system
3.2.3 sag—deviation of the acoustical tile or panel at its
geometric center from the plane formed by the edges.
1
These test methods are under the jurisdiction of ASTM Committee E33 on
Building and EnvironmentalAcoustics and are the direct responsibility of Subcom-
2
mittee E33.04 on Application of Acoustical Materials and Systems. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2016. Published June 2016. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1955. Last previous edition approved in 2009 as C367/C367M–09. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0367_C0367M-16. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C367/C367M − 16
HARDNESS 9.1.2 Method of conditioning including time of
conditioning, temperature, °F or [°C] , and relative humid-
4. Significance and Use ity,%,
9.1.3 Statement describing whether the finished or unfin-
4.1 Knowledgeofhardnessisusefulinthedevelopmentand
ishedsurfacewastestedandwhetherthefaceorthebackofthe
the quality control of acoustical tile and lay-in ceiling panels.
specimen was tested,
Deviation from an established hardness range will assist in
9.1.4 Average thickness for the five specimens, in. or [mm],
pointing out processing errors or defective raw materials,
thereby aiding the maintenance of uniform product quality.
9.1.5 Individual thicknesses for each of the five specimens,
in. or [mm],
4.2 This p
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C367/C367M − 09 C367/C367M − 16
Standard Test Methods for
Strength Properties of Prefabricated Architectural
1
Acoustical Tile or Lay-In Ceiling Panels
This standard is issued under the fixed designation C367/C367M; 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.
INTRODUCTION
Materials used for absorbing sound generally have a porous, low-density structure. In comparison
with many building materials they may be are relatively fragile. Materials are available that possess
adequate strength and stability and at the same time provide good sound absorption. The test methods
described here cover procedures for evaluating those physical properties related to strength. The
methods are of use in developing, manufacturing, and selecting acoustical tile or lay-in panels.
It should be kept Keep in mind that a property related to strength is only one of several
considerations important in judging the usefulness of an acoustical material. For example, a material
judged to be quite weak by one of these tests mayis still be desired for other reasons, and with adequate
precautions, may be is shipped and installed successfully.
1. Scope
1.1 These test methods cover the determination of the strength properties of prefabricated architectural acoustical tile or lay-in
ceiling panels as follows:
Tests Sections
Hardness 4 to 9
Friability 10 to 16
Sag 17 to 23
Transverse strength 24 to 30
1.2 Not all of the tests described in these test methods may be are necessary to evaluate any particular product for a specific
use. In each instance, it will be is necessary to determine which properties are required.
1.3 These test methods specify procedures that may be are used in product development, manufacturing control, specification
acceptance, and service evaluation.
1.4 Properties determined by these test methods reflect the performance of the materials under the specific conditions of the test,
and do not necessarily indicate performance under conditions other than those specified herein.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system mayare not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from
the two systems maywill result in non-conformance with the standard.
1.6 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.
2. Referenced Documents
2
2.1 ASTM Standards
C634 Terminology Relating to Building and Environmental Acoustics
1
These test methods are under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and are the direct responsibility of Subcommittee
E33.04 on Application of Acoustical Materials and Systems.
Current edition approved Oct. 15, 2009May 1, 2016. Published January 2010June 2016. Originally approved in 1955. Last previous edition approved in 19992009 as
C367 – 99.C367/C367M – 09. DOI: 10.1520/C0367-09.10.1520/C0367_C0367M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C367/C367M − 16
3. Terminology
3.1 Terms defined in Terminology C634.
3.1.1 acoustical material
3.1.2 sound absorption
3.2 Definitions of Terms Specific to This Standard:
3.2.1 fissures—irregular depressions of varying lengths widths, and depths extending below the basic product face.
3.2.2 friable—easily crumbled.
3.2.3 sag—deviation of the acoustical tile or panel at its geometric center from the plane formed by the edges.
HARDNESS
4. Significance and Use
4.1 Knowledge of hardness is useful in the development and the quality control of acoustical tile and lay-in ceiling panels.
Deviation from an established hardness range will assist in pointing out processing errors or defective raw materials, th
...

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1.1 This test method covers the laboratory measurement of impact sound transmission of floor-ceiling assemblies using a standardized tapping machine. It is assumed that the test specimen constitutes the primary sound transmission path into a receiving room located directly below and that a good approximation to a diffuse sound field exists in this room.  
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SCOPE
1.1 This test method covers the use of an impedance tube, alternatively called a standing wave apparatus, for the measurement of impedance ratios and the normal incidence sound absorption coefficients of acoustical materials.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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.

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ASTM
ASTM C522-03(2022)(Test Method)
Standard Test Method for Airflow Resistance of Acoustical Materials

SIGNIFICANCE AND USE
5.1 The specific airflow resistance of an acoustical material is one of the properties that determine its sound-absorptive and sound-transmitting properties. Measurement of specific airflow resistance is useful during product development, for quality control during manufacture, and for specification purposes.  
5.2 Valid measurements are made only in the region of laminar airflow where, aside from random measurement errors, the airflow resistance (R = P/U) is constant. When the airflow is turbulent, the apparent airflow resistance increases with an increase of volume velocity and the term “airflow resistance” does not apply.  
5.3 The specific airflow resistance measured by this test method may differ from the specific resistance measured by the impedance tube method in Test Method E384 for two reasons. In the presence of sound, the particle velocity inside a porous material is alternating while in this test method, the velocity is constant and in one direction only. Also, the particle velocity inside a porous material is not the same as the linear velocity measured outside the specimen.
SCOPE
1.1 This test method covers the measurement of airflow resistance and the related measurements of specific airflow resistance and airflow resistivity of porous materials that can be used for the absorption and attenuation of sound. Materials cover a range from thick boards or blankets to thin mats, fabrics, papers, and screens. When the material is anisotropic, provision is made for measurements along different axes of the specimen.  
1.2 This test method is designed for the measurement of values of specific airflow resistance ranging from 100 to 10 000 mks rayls (Pa·s/m) with linear airflow velocities ranging from 0.5 mm/s to 50 mm/s and pressure differences across the specimen ranging from 0.1 Pa to 250 Pa. The upper limit of this range of linear airflow velocities is a point at which the airflow through most porous materials is in partial or complete transition from laminar to turbulent flow.  
1.3 A procedure for accrediting a laboratory for the purposes of this test method is given in Annex A1.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4.1 Table 1 is provided for user to convert into cgs units.    
cgs acoustic ohm  
mks acoustic ohm (Pa·s/m3)  
105  
cgs rayl  
mks rayl (Pa·s/m)  
10    
cgs rayl/cm  
mks rayl/m (Pa·s/m2)  
103  
cgs rayl/in.  
mks rayl/m (Pa·s/m2)  
394  
mks rayl/in.  
mks rayl/m (Pa·s/m2)  
39.4  
1.5 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.  
1.6 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.

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ASTM
ASTM E1042-22(Classification)
Standard Classification for Acoustically Absorptive Materials Applied by Trowel or Spray

SIGNIFICANCE AND USE
4.1 Acoustically absorptive materials are used for the control of reverberation and echoes in rooms. This standard provides a classification method for acoustically absorptive materials applied directly to surfaces by trowel or by spray.
SCOPE
1.1 This classification covers materials applied by trowel or spray to surfaces for the purpose of increasing their acoustical absorption.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.

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ASTM
ASTM E1573-22(Test Method)
Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels

SIGNIFICANCE AND USE
5.1 Acoustical performance is dependent on many factors (see Guide E1374 for a discussion on general office acoustical considerations). One of these factors is the masking sound. The masking spectrum shape and level must conform within specified tolerances throughout the treated area. The measurement and recording of these parameters are addressed in this test method.  
5.2 The results from this test method are used to determine if the masking sound meets a particular specification.
SCOPE
1.1 This test method specifies the procedure used to measure the masking sound in terms of A-weighted and one-third-octave-band sound pressure levels.  
1.2 The results of this test method can be used to determine if and where the masking sound meets (or does not meet) a particular specification.  
1.3 This test method does not evaluate the overall acoustical environment. It is intended only to measure and report the masking sound levels.  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
1.5 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.  
1.6 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.

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