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<br /> 0 1 . Suspension Systems for
<br /> 405 Acoustical Lay-in Ceilinms
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<br /> ':*•", , —•'' ' ''' '--- General Recommendations
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<br /> 4::*.Y.g.t."01W:r.Ot'-: 61,1dtiOar laS,..'1.1:. -
<br /> • Referenced sources per hierarchy:2003 IBC(International Building Code),
<br /> Incorporation of this cfciquimerit. American Society of Testing Materials(ASTM C 635,ASTM C 636),
<br /> American Society of Civil Engineers(ASCE 7-02)and Ceilings and Interior•
<br /> fide vaifiO:r.ONforrii.81dridk-ii•-ea:e.-. "::' Systems Construction Association•(CISCA).
<br /> 0.(1.:40d.,;48Peclitg,This document-. . - Partitions that are tied to the ceiling and all partitions greater than 6 feet in
<br /> 'zi...-v''..e.i 'd..:-?:.;.:•..':,•... 1* ' :•-::. •-i-Y.......-: height shall be laterally braced to the structure. Bracing shall be indepen-
<br /> ':.:e : 4: e.Wi--tiplif=i!thvirit6rif d:f: • - "- dent of the ceiling splay bracing system. Source IBC section 1621.1.2
<br /> .!: &....:1;,i:*.':),:'.‘,::1.1:.s....,'.,......;,.• .:...,2.:•,..:::,".::•;:',:.-.:• :
<br /> rIall(560.0.011016g:•09c*(I00),*-0.;.i.:.- For further information on bracing of non-load bearing partitions refer to
<br /> Wi?.4::,S.:.:-•,•:‘,..f.: :„ ••• ,:.: `•:.••';':1::•,..:- :,',- '' %. NWCB technical document#201.
<br /> CNilient8-0:.seihild. :• ,.... .
<br /> ;;1..;!.il',:'.:•.;•'i,• -,.ii.::':::::ii.1..: .,...::.... -----• ;i":,-...., • All main beams are to be Heavy Duty(HD).Source ASCE 7-02 item 9.6262 2a
<br /> Adg60 Offb t.:.:stiOthrld6.066111 ......"
<br /> All cross tees shall be capable of carrying the design load without exceed-
<br /> iii;W::;:::'.4.:1:.:A.‘-,•,:;.::,:,-..J..-•,,;,..:•:;::,::,::.;• ,
<br /> tettogti...0.06.4••.tipp:ci:.0($..f?y,!- ing deflection equal to 1/360 of its span.Source CISCA zones 3-4
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<br /> M ° These recommendations are intended
<br /> i.. PUPI3I9);00-,12Yd001•00,W• - •:.:
<br /> for suspended ceilings including grid,
<br /> eriirdtit;-66.di:1000p.system'• -• • . panel or tile, light fixtures and air terminals
<br /> . • weighing no more the 4 lbs. per square
<br /> .1'..06.ii."061,poie:trlp if: opirom.oyits for.;.. foot.Source ASCE 7-02 item 9.62.6.1
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<br /> 6-M10.'04t04.014$1flaCOA. :ni:.: maximum 3' (I_
<br /> (76mm) I) a All wire ties are to be three tight turns
<br /> :;...;'•,•."'(..'.4.:..":•1•.:•'.:-... :,'•:•:-.••...:'f.i.'..::'•.'--- *:':';'-isti.f:: ....- (-0 around itself within three inches.Twelve
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<br /> . -L. (figure 1) Source ASTM C 636 Item 2gage Hanger wire spaced 4 foot on center
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<br /> r -. .m.?,'. ::?no:,.,..,;4---;'.s:0•;,: :, ,•;i...-7 . Changes in ceiling planes will require • 4 )6
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<br /> ,,,,_„.,„:„:„..,..„....%.,....„:„....,,..„.,,.:::,.:„....,.. :.,,,..•.. positive bracing. .
<br /> ki--4-i.::'•::-:-;.:,',. •..i•:t.:.;.-:.:•-•-..i.,..:.:::•.:•,.......,..... . .figure 1 • Source ASCE 7-62 Section 9.6.2.6.2.2.i item f.
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