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POS'f FRAMe'.-'. BL,)ILDZN(,~ ANALYSIS t~I~**TNf2.~ <br />DESIGN FRAME USING "A MOD'fFZE~,~'°AP;~ROC}--h**'-~C <br /> USING <br />BIAPBRAGM TBEORY" ASAE(VOL..~9~. <br /> <br />[}~,, S I GN LOADS: <br />SNOW 2SPSF <br />ALLOWABLE SOIL. PRESSURE :].SOOPSf <br />WTND BONPI.4 EXP.8 <br />SIDEWALL FRAME SPAE,'[NG /0 FT <br />WIOTB OF 8tJZLDING .~,¢ <br />LENGTH OF BUILDING ~/2 FT <br />EAVE HEIGHT /¢ FT <br />SLOPE OF ROOF .,~/i_2 ~*~i <br />OESZ. GN t4'TND PRESSURE=, Qs~.Ce~Co~.I <br />]]=&._O Qs='J. TF'~SF Ce'-'-'.7 Co,~AS PER UBC <br /> <br />Ce OVER 20PT~.B <br /> <br /> Os Ce Co DWP(20 D~P) 20 <br />WINDWARD t4ALL ']-7 _7 .8 9_52 <br />LEEWARD WALL :~.7 ,,7 ,5 5.95 6_80 <br />ROOF LEEWARD !7' .7 .7 8.33 9.52 OUTWARD <br />ROOF ~INDWARD ,1,7 .7 .3 3.57 4,,08 INWARD <br />ROOF VERT~}'~-~ SNOW/2 +ROOF DL--RDOF' HOR_ <br /> o~-'*}--.~~ A/[*'C ~t,s z. :' 2. S + :~. 0 :, ,..', = .~ 2.24 <br /> ~""- [ A6~C)V({ &R(~ F'(')f;: i.,.1 l':"r ¢:~r:~,'r' I,A(.fOF.,: <br /> <br />STEP ~.APPLY WIND LOAD AND ~/2 SNOW LOAD AND DEAD LOc O~ TO <br />THE 8UI~.~ING FRAME ANALOG AND Pi. ACE A VERTICAL ROLLER AT EAVE <br />LINE TO DETERMINE LATERAL_ RESTRAINING FORCE OF THE POS~ <br />FRAME,(ROLLER REACT;ON) <br />STEP 2.DETERMINE FRAHE STIFFNESS (K) BY APPLYING P OF <br />iO00LBSHOR. POINT FORCE AT TktE EAVE LINE WITH NO <br />ON FRAME. <br />STEP 3.SELECT THE DIAPHRAGM RESISTANCE FORCE MODIFiER(md) <br />THE ROOF CLADDING SHEAR FORCE NODZFZ~R FROM TABLES <br />THE TESTED ROOF SHEAR FOR A 1.2 FT STEEL ROOF' PANEL IS, <br />L~S FOR 2~ GAUGE ~ETAL FOR A ~.~ FT SECTION TI',4E ~AX,SHEAR <br />WOULD BE 1.300M~S, NOW DETERMINE I.(2 FROM LGTTRELL.'S FORMULA <br />C=E~T/[2( ~. t,V )g/pt, K;~/( b'~t',. <br /> <br /> C =~ 29 , 000 ~ 000:~, , 03 ¢t, 5 ,','. <br /> 2;~( 1 + .3 ):,~;I.. 2'~K2/( 1.44~ .01~-,5 )"2 <br /> C=2543 <br /> <br /> <br />