1、Designation: E1264 081E1264 14Standard Classification forAcoustical Ceiling Products1This standard is issued under the fixed designation E1264; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1 NOTE1.4, units of measure statement, was editorially inserted and 3.2
3、.10 and 8.1.2.3 were editorially updated in May2010.1. Scope1.1 This classification covers ceiling products that provide acoustical performance and interior finish in buildings. Products usedin performance spaces and other special applications may require more detailed specification than provided by
4、 this classification.1.2 This classification classifies acoustical ceilings by type, pattern, and certain ratings for acoustical performance, lightreflectance, and fire safety. It does not cover the aspects of acoustical ceilings when used as a component of a system or assemblytested for fire endura
5、nce or floor/ceiling sound transmission.1.3 This classification does not include physical properties, such as structural hardness, friability, sag, linear expansion andcontraction, and transverse strength, which may affect the handling, installation, and use of acoustical ceiling products (see TestM
6、ethods C367).1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2C367 Test Methods for Stren
7、gth Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling PanelsC423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room MethodC634 Terminology Relating to Building and Environmental AcousticsE84 Test Method for Surface Burning Character
8、istics of Building MaterialsE413 Classification for Rating Sound InsulationE795 Practices for Mounting Test Specimens During Sound Absorption TestsE1110 Classification for Determination of Articulation ClassE1111 Test Method for Measuring the Interzone Attenuation of Open Office ComponentsE1414 Test
9、 Method for Airborne Sound Attenuation Between Rooms Sharing a Common Ceiling PlenumE1477 Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers3. Terminology3.1 DefinitionsFor definitions of terms used in this classification, see Terminology
10、C634.3.2 Definitions of Terms Specific to This Standard:3.2.1 acoustical panela form of a prefabricated sound absorbing ceiling element used with exposed suspension systems.3.2.2 acoustical tilea form of a prefabricated sound absorbing ceiling element used with concealed or semi-exposedsuspension sy
11、stems, stapling, or adhesive bonding.3.2.3 butta joint detail for acoustical tile, butt bevel, or butt square edge, without kerfing of the edges, intended for adhesivebonding to solid backing.1 This classification is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustic
12、s and is the direct responsibility of Subcommittee E33.04on Application of Acoustical Materials and Systems.Current edition approved Sept. 1, 2008Oct. 1, 2014. Published September 2008January 2015. Originally approved in 1988. Last previous edition approved in 19982008as E1264 98E1264 081(2005) DOI:
13、 10.1520/E1264-08E01.10.1520/E1264-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an
14、 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. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. I
15、n all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.4 edge and joint detailvarious edge and joint details are available
16、 in accordance with Table 1 and Fig. 1 for acousticalceiling products.3.2.5 excelsiorlong, thin wood shavings.3.2.6 fissured patterna surface with irregular depressions of varying lengths, widths, and depths extending below the basicproduct face.3.2.7 flush reveal edgeacoustical lay-in panels are in
17、tended for use in direct hung exposed suspension systems with a narrowexposed edge that is flush with the panel face.3.2.8 glass fiber baseceilings composed principally of glass in fiber form with appropriate binders.3.2.9 kerfed and rabbetedjoint detail for acoustical tile. Tile with kerfed and rab
18、beted edges on all four sides, with or withoutbeveled edges, are intended for concealed suspension system or adhesive bonding.3.2.10 kerfed and rabbeted long edges, ends trimmedacoustical tile, 2 ft (609.6 mm) or longer, is intended for installation insemi-exposed, or semi-exposed direct hung suspen
19、sion systems.3.2.11 metal facings (pans)metal facing (pan) ceiling systems with mineral or glass fiber base backings are intended for usewhere sound absorption is needed and where durable and easily maintainable surfaces are a necessity.3.2.12 mineral baseceilings composed principally of mineral mat
20、erials such as fibers manufactured from rock or slag, withor without binders.3.2.13 reveal edgeacoustical lay-in panels with step-down edge are intended for use in direct hung exposed suspensionsystems.3.2.14 square edgeacoustical lay-in panels with square edges are intended for use in direct hung e
21、xposed suspension systems.3.2.15 DiscussionReveal, flush reveal, and square edged panels are laid in place and can easily be pushed upward for removalor access to the plenum above.3.2.16 textured patterngranular or raised (fine, coarse, or a blend), felted or matted surface as an integral part of th
22、e basicproduct or superimposed on the product surface.3.2.17 tongue and groovejoint detail for acoustical tile. Tile with tongue and groove edges are intended for stapling, concealedsuspension system, or adhesive bonding.4. Significance and Use4.1 This classification is used to classify and aid in t
23、he selection of acoustical ceiling products.5. Basis of Classification5.1 Acoustical ceiling products described using this classification may be of one or more of the following types, forms, patterns,acoustical ratings, light reflectance values, and fire classes, as specified.5.2 Ceiling Types:5.2.1
24、 Type ICellulose base with painted finish.5.2.2 Type IICellulose base with membrane-faced overlay.TABLE 1 Edge and Joint Detail, Types I, II, III, IV, VIII, IX, X, XI,and XIIAcoustical Unit Edge Detail Joint DetailTile Beveled Kerfed and Rabbeted or Tongueand Groove or ButtSquare Kerfed and Rabbeted
25、 or Tongueand Groove or ButtBeveled Long Edges,Square Edge Trimmed onEndsKerfed and Rabbeted LongEdges Only, Ends Trimmed.(For Semi-concealed System)Panels SquareRevealFlush RevealNarrow RevealNarrow Flush RevealMetal Pan SquareRevealFlush RevealNarrow RevealNarrow Flush RevealMetal Strip Varies wit
26、h ManufacturerE1264 1425.2.3 Type IIIMineral base with painted finish.5.2.3.1 Form 1Nodular.5.2.3.2 Form 2Water felted.5.2.3.3 Form 3Dry felted.5.2.3.4 Form 4Cast or molded.5.2.3.5 Form 5Other (describe).5.2.4 Type IVMineral base with membrane-faced overlay.5.2.4.1 Form 1Nodular.5.2.4.2 Form 2Water
27、felted.5.2.4.3 Form 3Dry felted.5.2.4.4 Form 4Cast or molded.5.2.4.5 Form 5Other (describe).5.2.5 Type VPerforated steel facing (pan) with mineral or glass fiber base backing.5.2.6 Type VIPerforated stainless steel facing (pan) with mineral or glass fiber base backing.5.2.7 Type VIIPerforated alumin
28、um facing (pan) with mineral or glass fiber base backing.5.2.8 Type VIIICellulose base with scrubbable pigmented or clear finish.5.2.9 Type IXMineral base with scrubbable pigmented or clear finish.5.2.9.1 Form 1Nodular.5.2.9.2 Form 2Water felted.5.2.9.3 Form 3Dry felted.5.2.9.4 Form 4Cast or molded.
29、5.2.10 Type XMineral base with plastic or aluminum membrane-faced overlay, or both.5.2.11 Type XIMineral base with fabric-faced overlay.5.2.11.1 Form 1Nodular.5.2.11.2 Form 2Water felted.5.2.11.3 Form 3Dry felted.5.2.11.4 Form 4Cast or molded.5.2.12 Type XIIGlass fiber base with membrane-faced overl
30、ay.5.2.12.1 Form 1Plastic.5.2.12.2 Form 2Cloth.5.2.12.3 Form 3Other.5.2.13 Type XIIIAluminum or steel strip with mineral or glass fiber base backing.5.2.13.1 Form 1Perforated.FIG. 1 Edge and Joint DetailsE1264 1435.2.13.2 Form 2Non-perforated.5.2.14 Type XIVExcelsior bonded with inorganic binders.5.
31、2.14.1 Form 1No backing.5.2.14.2 Form 2Backed with mineral or glass fiber base backing.5.2.15 Type XXOther types (describe).NOTE 1The facings specified in Type II, Type IV, Type X, Type XI, and Type XII shall be separate overlays and not coatings similar to paint.NOTE 2The minimum thickness of metal
32、lic facings (pans) specified in Type V, Type VI, and Type VII shall be sufficient to support the length of thefacing, or instead thereof, stiffeners or ribs may be provided to ensure rigidity.6. Ceiling Pattern6.1 Acoustical ceilings may be one of or a combination of two or more of the following pat
33、terns:Pattern Designation Pattern DescriptionA Perforated, regularly spaced large holesB Perforated, randomly spaced large holesC Perforated, small holesD FissuredE Lightly texturedF Heavily texturedG SmoothH PrintedI EmbossedJ Embossed-in-registerK Surface scoredL Random swirlZ Other patterns (desc
34、ribe)7. Ratings7.1 Acoustical Ratingsan acoustical ceiling mayshall meet one or more of the following acoustical performance requirements:7.1.1 Noise Reduction Coeffcient (NRC)An acoustical ceiling may meet a NRC rating measured in accordance with TestMethod C423. NRC values are to be expressed in i
35、ncrements of 0.05 as specified by Test Method C423. Typical values may rangefrom 0.40 to 1.00.7.1.2 Articulation Class (AC)An acoustical ceiling may meet the minimumAC rating derived in accordance with Test MethodE1111 and Classification E1110. AC values are to be expressed to the nearest multiple o
36、f 10 as specified by the ClassificationE1110. Typical values may range from 150 to 250.NOTE 3Specify AC rating only when rating the acoustical performance of ceilings designed to accommodate open-plan areas. AC is applicable forany ceiling material used as part of an acoustically designed system inc
37、orporating background sound masking and speech privacy space dividers. AC isthe preferred rating scheme for selecting ceiling products for open-plan in lieu of the NRC rating scheme. (The addition of hard surfaced elements in theceiling, such as surface mounted or recessed lighting fixtures can impa
38、ir the AC rating, depending upon the area of the hard surface and its locationrelevant to occupants in the space.)7.1.3 Ceiling Attenuation Class (CAC)An acoustical ceiling may meet a CAC rating, derived in accordance with Test MethodE1414 and Classification E413. Typical CAC values may range from 5
39、 to 55.NOTE 4Ceiling Attenuation Class (CAC) is a single number rating obtained according to Test Method E1414 and Classification E413. TheNormalized Ceiling Attenuation (Dn,c) values, obtained according to E1414 are used instead of Transmission Loss (TL) values in Classification E413.Test Method E1
40、414 is a two-room method of test in which a suspended ceiling and common plenum space overlay a two-room suite separated by amassive dividing wall. Sound must travel up through the source room ceiling, across the plenum, and down through the receive room ceiling.Modifications to the plenum space suc
41、h as overlays and barriers must be specified. STC ratings obtained from Test Method E90 or E336 data are notacceptable.7.2 Light Reflectance (LR) CoeffcientAn acoustical ceiling may meet a LR coefficient, measured in accordance with TestMethod E1477. Typical values may range from 0.60 to 0.80.7.3 Fi
42、re Class/Surface Burning CharacteristicsAcoustical ceiling products may be classified by flame spread and smokedeveloped indexes, tested in accordance with Test Method E84, as follows:7.3.1 Class AThe flame spread rating of Class A ceiling products shall not exceed 25, nor shall the material show ev
43、idenceof continued progressive combustion after the test flame has been extinguished.All surfaces, including those that would be exposedby cutting through the material in any way, shall meet these requirements. In addition, ClassAceiling products shall have a smokedeveloped rating not to exceed 50.7
44、.3.2 Class BThe flame spread of Class B ceiling products shall not exceed 75 on the face side.7.3.3 Class CThe flame spread of Class C Ceiling products shall not exceed 200 on the face side.NOTE 5Classes A, B, and C are equivalent, respectively, to Classes I, II, and III of various building code aut
45、horities.8. Test Methods8.1 Acoustical Performance Ratings:E1264 1448.1.1 Noise Reduction Coeffcient (NRC)Test according to Test Method C423 using Type E-400 mounting as defined inPractices E795 unless special means of installation are required. Special means of installation shall be explicitly note
46、d in testreports and in publications of test data.NOTE 6Plenum: The depth of air space has considerable effect on NRC using mechanically mounted acoustical tiles and panels. Because there areunlimited variations that are possible, it has been established that Practices E795 mounting Type E-400 (form
47、erly AMA Mounting No. 7) is mostconsistent with normal usage and existing technology of testing. Some manufacturers publish data for depths of mountings other than 400 mm, designatedby an E, followed by numbers which indicate the mounting depth in millimeters. For selecting NRC for mechanically moun
48、ted acoustical tiles and panels,mounting Type E-400 is preferred. If a plenum will not be used, a report of how the product performs with the appropriate mounting shouldshall beobtained.described.8.1.2 Articulation Class (AC)Test according to Test Method E1111 and determine AC rating according to Cl
49、assificationE1110, subject to the following:8.1.2.1 The reported AC rating shall be the minimum articulation class as defined in Test Method E1111, for a space dividerheight of 1.52 m (60 in.) and no other heights.NOTE 7The space divider height has considerable effect on theAC rating of acoustical tiles and panels. Because there are unlimited heights that couldbe tested, it has been established that 1.52 m (60 in.) space divider height is consistent with normal practices and usages. Test Metho
