1、Designation:E580/E580M10a Designation: E580/E580M 11Standard 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 d
2、esignation indicates the 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
3、 by agencies of the Department of Defense.1. Scope*1.1 This practice covers the installation of suspended systems for acoustical tile and lay-in panels and their additionalrequirements for two groups of buildings that are constructed to resist the effects of earthquake motions as defined by ASCE 7 a
4、ndthe International Building Code. These groupings are for Seismic Design Category C and Seismic Design Categories D, E and F.1.2 The authority having jurisdiction shall determine the applicability of this practice.1.3 Specification C635 and Practice C636 cover suspension systems and their installat
5、ion without special regard to seismiclateral restraint needs. They remain applicable and shall be followed when this practice is specified.1.4 Ceilings less than or equal to 144 square feet and surrounded by walls connected to the structure above are exempt fromthe requirements of this practice.1.5
6、This practice is not intended to stifle research and development of new products or methods. This practice is not intendedto prevent the installation of any material or prohibit any design or method of construction not prescribed in this practice, providedthat any such alternative has been substanti
7、ated by verifiable engineering data or full-scale dynamic testing that is acceptable tothe authority having jurisdiction.1.6 Ceiling areas of 1000 ft292.9 m2 or less shall be exempt from the lateral force bracing requirements of 5.2.8.1.7 Ceilings constructed of gypsum board which is screw or nail a
8、ttached to suspended members that support a ceiling on onelevel extending from wall to wall shall be exempt from the requirements of this practice.1.8 Free floating ceilings (those not attached directly to any structural walls) supported by chains or cables from the structureare not required to sati
9、sfy the seismic force requirements provided they meet the following requirements:1.8.1 The design load for such items shall equal 1.4 times the vertical operating weight.1.8.2 Seismic interaction effects shall be considered in accordance with 5.7.1.8.3 The connection to the structure shall allow a 3
10、60 range of motion in the horizontal plane.1.9 The values stated in either inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shownin brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of theo
11、ther. Combining values from the two systems result in nonconformance with the specification.1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health prac
12、tices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C635 Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-inPanel CeilingsC636 Practice for Installation of Metal Ceil
13、ing Suspension Systems for Acoustical Tile and Lay-In Panels2.2 Other Standards:1This practice is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.04 onApplication of Acoustical Materials and Systems.Current edi
14、tion approved Oct. 1, 2010.March 15, 2011. Published October 2010.March 2011. Originally approved in 1976. Last previous edition approved in 2010 asE580 10a. DOI: 10.1520/E0580_E0580M-10A1.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at servi
15、ceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This 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.
16、Becauseit 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 versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section a
17、ppears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASCE 7 Minimum Design Loads for Buildings and Other Structures3CISCA Recommendations for Direct-hung Acoustical Tile and Lay-in Ceilings, Seismic Zones
18、 0-24CISCA Guidelines for Seismic Restraint for Direct Hung Suspended Ceiling Assemblies, Seismic Zones3 earthquake; seismic; seismic restraint; suspended ceilingAPPENDIX(Nonmandatory Information)X1. COMMENTARYX1.1 Recommendations in previous versions of this practice were based in part on testing d
19、one in the 1980s. This, coupledwith general observations from the earthquake prone areas in California have lead to the original practice.X1.2 Actual earthquake experience (most notably Northridge and Loma Prieta earthquakes) has shown that three main thingsare critical for good performance of ceili
20、ng systems during earthquakes which are:X1.2.1 Independent safety wires on light fixtures to prevent dropout,X1.2.2 Minimum strength requirements for splices and cross/runner/main runner intersections, andX1.2.3 Spreader bars and independent support of suspension member terminal ends at wall closure
21、s which prevent paneldropout if the perimeter suspension terminal end slips off of the closure support ledge.X1.3 These observations have lead to the requirement for safety wires on light fixtures and minimum connection strengths inPractice E580/E580M. This also led to the requirement for 2-in. 50 m
22、m perimeter support ledger and the requirement forindependent support of terminal ends of suspension members.X1.4 Advent of International Building Code has raised the awareness of seismic installation requirements in areas within theUnited States where these requirements traditionally were not a con
23、cern.X1.5 The introduction of non-traditional ceiling made of wood and metal, as well as ceilings that do not use traditional tee barsuspension systems, has lead to a need for an expansion of the prescriptive installation requirements. There has been also a generalconcern over the interaction of the
24、 ceiling system with HVAC components, lights and sprinklers. This coupled with the comingof next generation of performance based seismic codes has lead to new interest in clear and concise requirements for installationof ceiling systems. The result is this current rewrite of this practice.SUMMARY OF
25、 CHANGESCommittee E33 has identified the location of selected changes 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 las
26、t issue ( E580/10)that may impact the use of this standard.(1) Added 1.4 and renumbered existing 1.41.9 to 1.5-1.10 and renumbered existing 1.7.1, 1.7.2, and 1.7.3 to 1.8.1, 1.8.2, and1.8.3.ASTM International takes no position respecting the validity of any patent rights asserted in connection with
27、any item mentionedin this standard. Users of this standard are expressly 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 technic
28、al committee and must be reviewed every five years andif not revised, 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
29、 at a meeting of theresponsible technical committee, which you may attend. 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 Harbo
30、r Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. 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 1110
