1、Designation: E580/E580M 11aStandard Practice forInstallation of Ceiling Suspension Systems for AcousticalTile and Lay-in Panels in Areas Subject to EarthquakeGround Motions1This standard is issued under the fixed designation E580/E580M; the number immediately following the designation indicates the
2、yearof 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.This standard has been approved for use by agencies of the Depar
3、tment of Defense.1. Scope*1.1 This practice covers the installation of suspended sys-tems for acoustical tile and lay-in panels and their additionalrequirements for two groups of buildings that are constructedto resist the effects of earthquake motions as defined byASCE 7 and the International Build
4、ing Code. These groupingsare for Seismic Design Category C and Seismic DesignCategories D, E and F.1.2 The authority having jurisdiction shall determine theapplicability of this practice.1.3 Specification C635 and Practice C636 cover suspensionsystems and their installation without special regard to
5、 seismiclateral restraint needs. They remain applicable and shall befollowed when this practice is specified.1.4 Ceilings less than or equal to 144 square feet andsurrounded by walls connected to the structure above areexempt from the requirements of this practice.1.5 This practice is not intended t
6、o stifle research anddevelopment of new products or methods. This practice is notintended to prevent the installation of any material or prohibitany design or method of construction not prescribed in thispractice, provided that any such alternative has been substan-tiated by verifiable engineering d
7、ata or full-scale dynamictesting that is acceptable to the authority having jurisdiction.1.6 Ceiling areas of 1000 ft292.9 m2 or less shall beexempt from the lateral force bracing requirements of 5.2.8.1.7 Ceilings constructed of gypsum board which is screw ornail attached to suspended members that
8、support a ceiling onone level extending from wall to wall shall be exempt from therequirements of this practice.1.8 Free floating ceilings (those not attached directly to anystructural walls) supported by chains or cables from thestructure are not required to satisfy the seismic force require-ments
9、provided they meet the following requirements:1.8.1 The design load for such items shall equal 1.4 timesthe vertical operating weight.1.8.2 Seismic interaction effects shall be considered inaccordance with 5.7.1.8.3 The connection to the structure shall allow a 360range of motion in the horizontal p
10、lane.1.9 The values stated in either inch-pound or SI units are tobe regarded as standard. Within the text, the SI units are shownin brackets. The values stated in each system are not exactequivalents; therefore, each system shall be used independentlyof the other. Combining values from the two syst
11、ems result innonconformance with the specification.1.10 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of
12、 regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C635 Specification for the Manufacture, Performance, andTesting of Metal Suspension Systems for Acoustical Tileand Lay-in Panel CeilingsC636 Practice for Installation of Metal Ceiling SuspensionSystems for Acoustical Til
13、e and Lay-In Panels2.2 Other Standards:ASCE 7 Minimum Design Loads for Buildings and OtherStructures3CISCA Recommendations for Direct-hung Acoustical Tileand Lay-in Ceilings, Seismic Zones 0-24CISCA Guidelines for Seismic Restraint for Direct Hung1This practice is under the jurisdiction of ASTM Comm
14、ittee E33 on Buildingand Environmental Acoustics and is the direct responsibility of SubcommitteeE33.04 on Application of Acoustical Materials and Systems.Current edition approved May 15, 2011. Published June 2011. Originallyapproved in 1976. Last previous edition approved in 2011 as E580 11. DOI:10
15、.1520/E0580_E0580M-11A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Society of Ci
16、vil Engineers (ASCE), 1801 AlexanderBell Drive, Reston, VA 20191 or www.pubs.asce.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Suspended Ceiling Assemblies, Sei
17、smic Zones3 earthquake; seismic; seismic re-straint; suspended ceilingAPPENDIX(Nonmandatory Information)X1. COMMENTARYX1.1 Recommendations in previous versions of this prac-tice were based in part on testing done in the 1980s. This,coupled with general observations from the earthquake proneareas in
18、California have lead to the original practice.X1.2 Actual earthquake experience (most notablyNorthridge and Loma Prieta earthquakes) has shown that threemain things are critical for good performance of ceilingsystems during earthquakes which are:X1.2.1 Independent safety wires on light fixtures to p
19、reventdropout,X1.2.2 Minimum strength requirements for splices andcross/runner/main runner intersections, andX1.2.3 Spreader bars and independent support of suspen-sion member terminal ends at wall closures which preventpanel dropout if the perimeter suspension terminal end slips offof the closure s
20、upport ledge.FIG. 5 Supplemental Hanger Wires at Light Fixtures (continued)E580/E580M 11a9X1.3 These observations have lead to the requirement forsafety wires on light fixtures and minimum connectionstrengths in Practice E580/E580M. This also led to the require-ment for 2-in. 50 mm perimeter support
21、 ledger and therequirement for independent support of terminal ends ofsuspension members.X1.4 Advent of International Building Code has raised theawareness of seismic installation requirements in areas withinthe United States where these requirements traditionally werenot a concern.X1.5 The introduc
22、tion of non-traditional ceiling made ofwood and metal, as well as ceilings that do not use traditionaltee bar suspension systems, has lead to a need for an expansionof the prescriptive installation requirements. There has beenalso a general concern over the interaction of the ceiling systemwith HVAC
23、 components, lights and sprinklers. This coupledwith the coming of next generation of performance basedseismic codes has lead to new interest in clear and conciserequirements for installation of ceiling systems. The result isthis current rewrite of this practice.SUMMARY OF CHANGESCommittee E33 has i
24、dentified the location of selected changes to this standard since the last issue ( E580/11)that may impact the use of this standard. (Approved May 15, 2011)(1) Sections 4.2.5, 4.3.2, 4.5.1, 4.5.2, 5.2.4, 5.2.7.2, 5.4.1, and5.4.2were revised.Committee E33 has identified the location of selected chang
25、es to this standard since the last issue ( E580/10a)that may impact the use of this standard. (Approved March 15, 2011)(1) 4.1.2 was revised.Committee E33 has identified the location of selected changes to this standard since the last issue ( E580/10)that may impact the use of this standard.(1) Adde
26、d 1.4 and renumbered existing 1.41.9 to 1.5-1.10and renumbered existing 1.7.1, 1.7.2, and 1.7.3 to 1.8.1, 1.8.2,and 1.8.3.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expre
27、ssly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised
28、, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may a
29、ttend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States
30、. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).E580/E580M 11a10
