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�� <br /> � - <br /> � <br /> Examplc for Section <br /> A 16 ft.door is rcquired in the end u•all of a 60 ft.widc building, Thecciling hcight is 30(1. anJ�hc door height <br /> is 16 R, Thc maximum roof shcar, (,has been detertnined(Reference I or 2)to tx 104 Ibs/R. <br /> Ttic end-wall shear load is givcn hy Equation(2) <br /> V = I x W <br /> V = I Q4 Ibs!(t.x 60 ft.=6,240 Ib. <br /> IYotc: Depcndinguponthcbuildingcode,thisloadreyuirementmaybereducedbpa(actorof1.33.Sceforexample, <br /> UBC(1991),pangraph 2303(d),or F30CA(1990),paragraph I I 14.3. Decreasing the load is equivalent to incrcasing <br /> the allowable working stress. <br /> By selecting end-wall construction Q2 and the lowest value for the two heights tesied,the allowable end-wal l <br /> sl�car capacity is calculated by equalion 3 with R= 165 Ibs/R,(Table 1) <br /> SC = (W-DW)R <br /> SC = (60 ft.- 16 fl.) 1651bs/ft.=7,2601b. <br /> By equation(I),end•u�all construction Q2 is adequate: <br /> V < SC <br /> 6,2401b. < 7.2601b. <br /> Conswction QI would not be adequate since,for the example,SC would equal 3,O801b. [(60 ft. - 16 ft.) x 701bs/ <br /> (t.� using the lowest value for the two heights tested. <br /> In addition to thc requirem.ents of Equation 1,thc end•wall pusl spacing cannot czceed 8 ft.. For the example, <br /> a post spacing of approximately 7 R.-4 in.will meet the diaphragm requirement wilh swctural posts positioned at <br /> the cdgcs of thc door. <br /> Note: End-wall post spacing may be controllcd by other ihan diaphragm shear loading. <br /> 5.0 Powcronnel F.nd•Wall DiaphraPm on�tr �ctionc <br /> 'ihe cnd-wall diaphragms tested uud thc 26 or 29 gauge Powerpanel profile manufacturcd by Alumax <br /> Building f'roducts. In addition to the speci fic requtrements for each conswction Q I tFvough QS given in 6.1 through <br /> G.S,mspectivcly,the cnd-wall diaptuagm systems tested have soecial requirements az follows: <br /> a) Splash board is 2 x 8 or larger and from lumber Group II or I(See Appendiz A). <br /> b) The splash board is anached lo each end-wall post with uven(7)20d double hot-dipped galvaniud, <br /> th�caded and hardened nails. If necessary,provide prebored holes in splash board to prevent splitting. <br /> c) 'itie end-wnll diaphragm is altached dircctly to the wss top chord. FuU length steel sheets(fiom <br /> splazh board io wss top chord)are required, ' <br /> d) The diaphragm conswctions Q 1 through QS are faztened to the splazh board and wss top chord with <br /> N 12 x 1 5/8 in.screws,(Deep Grip SPEX with ULTRA Seal Coating,EPDM�vbber on 9/16 in. <br /> diameter G-90 galvanizcd washer distributed by Eas�Coazt Faz�eners and Closures),on both sides of <br /> the major ribs(Sce Figure 2). At all intermediatc gins the same screws are rcquired on onc side of the <br /> major ribs(See figure 2) <br /> e) Gin lumber is from lumber Group III, II,or I(See Appendix A). <br /> 4 Moisture content o(gin lumber must not exceed 19�Sc at time o(installation. <br /> g) Gins(2 x 4 or largcr)arc attached Oatwise with two 20c1 threaded and hardened nails at each post <br /> location. <br /> h) All stecl is 29 gaugc Pow�crpancl cxcept (or Conswaion Q-4 that uscs 26 gauge Powerpanel. <br /> �� <br />