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. <br /> / .r <br /> ❑___ <br /> 4ntial facilities,hanger wire connections must be capable of carrying figure 5a Plumb 116 • <br /> ,pounds and bracing(splay)wires shall be capable of carrying 440 pounds, i •. <br /> lot-in anchors in concrete are not permitted for bracing wires. Source Depart- Iti, <br /> ',ment of State Architects(DSA)IR M-3 11 <br /> Bracing wires shall be attached to the grid and to the structure in such a man- 1, <br /> ner that they can support a design load of not less than 200 pounds or the • t <br /> actual design Toad,with a safety factor of 2,.whichever is greater(figure 6b). .f._-maximum g• 11 <br /> Source C1SCA zones 3-4• r <br /> Powder driven fasteners must be approved for the appropriate loading. � �; _ � <br /> Source ASCE 7-02 section 9;6.1.6.5 /"�� , <br /> Terminal ends o each main bea and cross tee must be supported 'thin 8 <br /> inches of each wa with ., perimeter wir- (see figure 4&5 b).Source CISCA zones 3-4 figure 5b a Counterstoping <br /> :(ectricat fixtures a(5 \ <br /> /,r � • <br /> Light fixtures weighing less than 10 pounds shall have one 12 gage hanger 11mum •'t,i ��` Se�n9 c <br /> 45°angle <br /> wire connected from the fixture to the structure above.This wire may be slack. - <br /> At Source CISCA Seismic zones 3-4 <br /> fight fixtures weighind)more than 10 >�ourds and less than 56 lbs.shall have <br /> two 12 gage wires attached at opposing corners of the light fixture to the <br /> structure above,These wires may be slack.Source CISCA Seismic zones 3-4. <br /> Light Fixtures weighing more than 56_lbs.shall be supported by directly from • <br /> the structure above.These wires must be taut.source CISCA Seismic zones 3-4 figure 6a • <br /> Pendant mounted fixtures shall be directly supported from the structure above • :: <br /> .. --...usina a 9 Gage wire or an approved alternate support without using the ceiling vertical hanger wire attachment •• , ••, <br /> : <br /> - 'SUSjJoI ISiGr1 oyster:i'furl direct Si,ipj:�Gi u.Somct COCACOCA Jci5lniczoncs -4 - Shot-in anchor .-•••`1]a/w" I --`-Y i4 <br /> ir`lde-n fiy turp •31151'y I Irtli7P CYTN-TN --_-. <br /> Structural concrete I • i_- <br /> 5/8" <br /> w • Ceiling clip max• <br /> fiechan'ical Services • <br /> 3 turns <br /> Terminals or services weighing 20 lbs. but not more than 55 lbs.must have.two <br /> 12 gage wires connecting them to the ceiling system hangers or the structure <br /> Vertical hanger wire <br /> • <br /> above.These wires may be slack.Source CISCA Seismic zones 3-4 • <br /> Terminals or services weighing more than 56 lbs. must be independentlyfigure 6b • <br /> supported directly.from the structure above.These wires must be taut. splayed seismic bracing wire attachment <br /> Source CISCA Seismic zones 3-4 .. ... <br /> ��-isn 5/16"drill-in expansion anchor. ,111.'.:::.. . <br /> ie igmjc Separation Joints (figure 7) • minimum ' ,� ti <br /> 45° �, <br /> or ceiling areas exceeding 2500 square feet,a seismic separation joint or <br /> Structural concrete <br /> eight wall partition that breaks the ceiling shall be provided unless analyses are steel strap minimum wide x 2"long x ,� <br /> erformed of the ceilings bracing system,closure angles and penetrations to pro- 3 turns 1 <br /> de sufficient Clearance.Source ASCE 7-02 item 9.6.2.6.2.2 d Splayed seismic bracing wire <br /> he layout and location of the seismic separation joint shall be per the designer . <br /> 1 iecord and noted on the plans. If a seismic separation joint is required by the <br /> esigner,the designer may use the generic joint detailed in this document or a pro- . <br /> rietary joint.The amount of free movement(gap design)shall be per-the designer figure 7 <br /> f record. <br /> • <br /> ipeciai inspections S � ) <br /> pedal inspections may be required by the jurisdiction or municipality. Contact the 5 ,,f) � _ <br /> cal building department. ��01Al 4, <br /> 1 rinkiers ��l rrill,111.1115"--llt <br /> r„C) f,c1Icin s nnkler head penetrations shall have a 2 inch •..z: . •. ••"" <br /> 7r ceilings without rigid bracing,g, p i <br /> • ✓ersize ring,sleeve or adapter through the ceiling tile to allow free movement of at. ___._-,, <br /> I. <br /> ast 1 inch in all horizontal directions. Flexible head design that can accommodate 4141/ <br /> "' <br /> Flange <br /> .._�_,_n i_.„ iiInd ae an altdrnai-A.RnnroeASCE 7-029.6.2.6.2.2.iteme 1 Cap 1 II Pop <br />