1、Designation: E1264 081Standard 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 parenthe
2、ses 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 Department of Defense.1NOTE1.4, units of measure statement, was editorially inserted and 3.2.10 and 8.1.2.
3、3 were editorially updated in May 2010.1. Scope1.1 This classification covers ceiling products that provideacoustical performance and interior finish in buildings. Prod-ucts used in performance spaces and other special applicationsmay require more detailed specification than provided by thisclassifi
4、cation.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 ofacoustical ceilings when used as a component of a system orassembly tested for fire endurance or floor/cei
5、ling soundtransmission.1.3 This classification does not include physical properties,such as structural hardness, friability, sag, linear expansion andcontraction, and transverse strength, which may affect thehandling, installation, and use of acoustical ceiling products(see Test Methods C367).1.4 Th
6、e values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2C367 Test Methods for Strength Properties of Pre
7、fabricatedArchitectural Acoustical Tile or Lay-In Ceiling PanelsC423 Test Method for Sound Absorption and Sound Ab-sorption Coefficients by the Reverberation Room MethodC634 Terminology Relating to Building and EnvironmentalAcousticsE84 Test Method for Surface Burning Characteristics ofBuilding Mate
8、rialsE413 Classification for Rating Sound InsulationE795 Practices for Mounting Test Specimens During SoundAbsorption TestsE1110 Classification for Determination of ArticulationClassE1111 Test Method for Measuring the InterzoneAttenuationof Open Office ComponentsE1414 Test Method for Airborne Sound
9、Attenuation Be-tween Rooms Sharing a Common Ceiling PlenumE1477 Test Method for Luminous Reflectance Factor ofAcoustical Materials by Use of Integrating-Sphere Reflec-tometers3. Terminology3.1 DefinitionsFor definitions of terms used in this clas-sification, see Terminology C634.3.2 Definitions of T
10、erms Specific to This Standard:3.2.1 acoustical panela form of a prefabricated soundabsorbing ceiling element used with exposed suspension sys-tems.3.2.2 acoustical tilea form of a prefabricated sound ab-sorbing ceiling element used with concealed or semi-exposedsuspension systems, stapling, or adhe
11、sive bonding.3.2.3 butta joint detail for acoustical tile, butt bevel, orbutt square edge, without kerfing of the edges, intended foradhesive bonding to solid backing.3.2.4 edge and joint detailvarious edge and joint detailsare available in accordance with Table 1 and Fig. 1 foracoustical ceiling pr
12、oducts.3.2.5 excelsiorlong, thin wood shavings.1This classification is under the jurisdiction of ASTM Committee E33 onBuilding and Environmental Acoustics and is the direct responsibility of Subcom-mittee E33.04 on Application of Acoustical Materials and Systems.Current edition approved Sept. 1, 200
13、8. Published September 2008. Originallyapproved in 1988. Last previous edition approved in 1998 as E1264 98(2005).DOI: 10.1520/E1264-08E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume
14、 information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.6 fissured patterna surface with irregular depressionsof varying lengths, widths, and depths extending
15、below thebasic product face.3.2.7 flush reveal edgeacoustical lay-in panels are in-tended for use in direct hung exposed suspension systems witha narrow exposed edge that is flush with the panel face.3.2.8 glass fiber baseceilings composed principally ofglass in fiber form with appropriate binders.3
16、.2.9 kerfed and rabbetedjoint detail for acoustical tile.Tile with kerfed and rabbeted edges on all four sides, with orwithout beveled edges, are intended for concealed suspensionsystem or adhesive bonding.3.2.10 kerfed and rabbeted long edges, ends trimmedacoustical tile, 2 ft (609.6 mm) or longer,
17、 is intended forinstallation in semi-exposed, or semi-exposed direct hungsuspension systems.3.2.11 metal facings (pans)metal facing (pan) ceilingsystems with mineral or glass fiber base backings are intendedfor use where sound absorption is needed and where durableand easily maintainable surfaces ar
18、e a necessity.3.2.12 mineral baseceilings composed principally ofmineral materials such as fibers manufactured from rock orslag, with or without binders.3.2.13 reveal edgeacoustical lay-in panels with step-down edge are intended for use in direct hung exposedsuspension systems.3.2.14 square edgeacou
19、stical lay-in panels with squareedges are intended for use in direct hung exposed suspensionsystems.3.2.15 DiscussionReveal, flush reveal, and square edgedpanels are laid in place and can easily be pushed upward forremoval or access to the plenum above.3.2.16 textured patterngranular or raised (fine
20、, coarse, ora blend), felted or matted surface as an integral part of the 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,concealed suspension system, or adhesive bonding.4. Signi
21、ficance and Use4.1 This classification is used to classify and aid in theselection of acoustical ceiling products.5. Basis of Classification5.1 Acoustical ceiling products described using this classi-fication may be of one or more of the following types, forms,patterns, acoustical ratings, light ref
22、lectance values, and fireclasses, as specified.5.2 Ceiling Types:5.2.1 Type ICellulose base with painted finish.5.2.2 Type IICellulose base with membrane-faced over-lay.5.2.3 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 Fo
23、rm 4Cast or molded.5.2.4 Type IVMineral base with membrane-faced overlay.5.2.4.1 Form 1Nodular.5.2.4.2 Form 2Water felted.5.2.4.3 Form 3Dry felted.5.2.4.4 Form 4Cast or molded.5.2.5 Type VPerforated steel facing (pan) with mineral orglass fiber base backing.5.2.6 Type VIPerforated stainless steel fa
24、cing (pan) withmineral or glass fiber base backing.5.2.7 Type VIIPerforated aluminum facing (pan) withmineral or glass fiber base backing.5.2.8 Type VIIICellulose base with scrubbable pigmentedor clear finish.TABLE 1 Edge and Joint Detail, Types I, II, III, IV, VIII, IX, X, XI,and XIIAcoustical Unit
25、 Edge Detail Joint DetailTile Beveled Kerfed and Rabbeted or Tongueand Groove or ButtSquare Kerfed and Rabbeted or Tongueand Groove or ButtBeveled Long Edges,Square Edge Trimmed onEndsKerfed and Rabbeted LongEdges Only, Ends Trimmed.(For Semi-concealed System)Panels SquareRevealFlush RevealNarrow Re
26、vealNarrow Flush RevealMetal Pan SquareRevealFlush RevealNarrow RevealNarrow Flush RevealMetal Strip Varies with ManufacturerFIG. 1 Edge and Joint DetailsE1264 08125.2.9 Type IXMineral base with scrubbable pigmented orclear finish.5.2.9.1 Form 1Nodular.5.2.9.2 Form 2Water felted.5.2.9.3 Form 3Dry fe
27、lted.5.2.9.4 Form 4Cast or molded.5.2.10 Type XMineral base with plastic or aluminummembrane-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 fib
28、er base with membrane-facedoverlay.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 orglass fiber base backing.5.2.13.1 Form 1Perforated.5.2.13.2 Form 2Non-perforated.5.2.14 Type XIVExcelsior bonded with inorganic binders.5.2.14.1
29、Form 1No backing.5.2.14.2 Form 2Backed with mineral or glass fiber basebacking.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 metallic facin
30、gs (pans) specifiedin Type V, Type VI, and Type VII shall be sufficient to support the lengthof the facing, or instead thereof, stiffeners or ribs may be provided toensure rigidity.6. Ceiling Pattern6.1 Acoustical ceilings may be one of or a combination oftwo or more of the following patterns:Patter
31、n 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 (describe)7. Rati
32、ngs7.1 Acoustical Ratingsan acoustical ceiling may meet oneor more of the following acoustical performance requirements:7.1.1 Noise Reduction Coeffcient (NRC)An acousticalceiling may meet a NRC rating measured in accordance withTest Method C423. NRC values are to be expressed inincrements of 0.05 as
33、 specified by Test Method C423. Typicalvalues may range from 0.40 to 1.00.7.1.2 Articulation Class (AC)An acoustical ceiling maymeet the minimum AC rating derived in accordance with TestMethod E1111 and Classification E1110. AC values are to beexpressed to the nearest multiple of 10 as specified by
34、theClassification E1110. Typical values may range from 150 to250.NOTE 3Specify AC rating only when rating the acoustical perfor-mance of ceilings designed to accommodate open-plan areas. AC isapplicable for any ceiling material used as part of an acoustically designedsystem incorporating background
35、sound masking and speech privacyspace dividers. AC is the preferred rating scheme for selecting ceilingproducts for open-plan in lieu of the NRC rating scheme. (The addition ofhard surfaced elements in the ceiling, such as surface mounted or recessedlighting fixtures can impair the AC rating, depend
36、ing upon the area of thehard surface and its location relevant to occupants in the space.)7.1.3 Ceiling Attenuation Class (CAC)An acoustical ceil-ing may meet a CAC rating, derived in accordance with TestMethod E1414 and Classification E413. Typical CAC valuesmay range from 5 to 55.NOTE 4Ceiling Att
37、enuation Class (CAC) is a single number ratingobtained according to Test Method E1414 and Classification E413. TheNormalized Ceiling Attenuation (Dn,c) values, obtained according toE1414 are used instead of Transmission Loss (TL) values in ClassificationE413. Test Method E1414 is a two-room method o
38、f test in which asuspended ceiling and common plenum space overlay a two-room suiteseparated by a massive dividing wall. Sound must travel up through thesource room ceiling, across the plenum, and down through the receiveroom ceiling. Modifications to the plenum space such as overlays andbarriers mu
39、st be specified. STC ratings obtained from Test Method E90 orE336 data are not acceptable.7.2 Light Reflectance (LR) CoeffcientAn acoustical ceil-ing may meet a LR coefficient, measured in accordance withTest Method E1477. Typical values may range from 0.60 to0.80.7.3 Fire Class/Surface Burning Char
40、acteristicsAcoustical ceiling products may be classified by flame spreadand smoke developed indexes, tested in accordance with TestMethod E84, as follows:7.3.1 Class AThe flame spread rating of Class A ceilingproducts shall not exceed 25, nor shall the material showevidence of continued progressive
41、combustion after the testflame has been extinguished. All surfaces, including those thatwould be exposed by cutting through the material in any way,shall meet these requirements. In addition, Class A ceilingproducts shall have a smoke developed rating not to exceed 50.7.3.2 Class BThe flame spread o
42、f Class B ceiling prod-ucts shall not exceed 75 on the face side.7.3.3 Class CThe flame spread of Class C Ceiling prod-ucts 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 authorities.8. Test Methods8.1 A
43、coustical Performance Ratings:8.1.1 Noise Reduction Coeffcient (NRC)Test according toTest Method C423 using Type E-400 mounting as defined inPractices E795 unless special means of installation are re-quired. Special means of installation shall be explicitly noted intest reports and in publications o
44、f test data.NOTE 6Plenum: The depth of air space has considerable effect onNRC using mechanically mounted acoustical tiles and panels. BecauseE1264 0813there are unlimited variations that are possible, it has been established thatPractices E795 mounting Type E-400 (formerly AMA Mounting No. 7) ismos
45、t consistent with normal usage and existing technology of testing.Some manufacturers publish data for depths of mountings other than 400mm, designated by an E, followed by numbers which indicate themounting depth in millimeters. For selecting NRC for mechanicallymounted acoustical tiles and panels,
46、mounting Type E-400 is preferred. Ifa plenum will not be used, a report of how the product performs with theappropriate mounting should be obtained.8.1.2 Articulation Class (AC)Test according to TestMethod E1111 and determine AC rating according to Classi-fication E1110, subject to the following:8.1
47、.2.1 The reported AC rating shall be the minimumarticulation class as defined in Test Method E1111, for a spacedivider height of 1.52 m (60 in.) and no other heights.NOTE 7The space divider height has considerable effect on the ACrating of acoustical tiles and panels. Because there are unlimited hei
48、ghtsthat could be tested, it has been established that 1.52 m (60 in.) spacedivider height is consistent with normal practices and usages. Test MethodE1111 requires that the AC for the 1.52 m (60 in.) high screen be reported.8.1.2.2 The ceiling to be tested shall be installed as normallyused with it
49、s recommended means of installation, no less than8 ft and no more than 9 ft above the floor, or as otherwisespecified and explicitly noted in test reports and in publicationsof test data.8.1.2.3 The plenum depth measured from the specimensurface to the underside of the deck above shall be 2 ft, 6 in.(762.0 mm) unless specified otherwise. The extended surfaceof the underside of the deck shall be acoustically hard.8.1.3 Ceiling Attenuation Class (CAC)Test according toTest Method E1414 and determine CA
