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. r] <br /> <br />POST FRAME ~UILDZNG ANALY~-~;$ ~SI'NG-~r~IADHR~GM THEORY <br />DgsIGN ERAHE USING "A ~()D~Z~E~ APP~H:TO:POST-FRAHE USING <br />DIAPHRAGM THEORY" ASAE(VO%,29?N~-' 5-1,3~-1372. 1~86 <br /> <br />DES "AD": <br /> <br />ALL--SOIL PRESSURE 1500PSF <br />WINE) 80MPH EXP.B <br />SIDEWALl.. FRAME SP~CING [~'T <br />WZDTH OF BUILDING I~ FT <br />LENGTH OF BUILDING ~ FT <br />SLOPE OF ROOF ~/12 I <br />DESIGN W~ND PRESSURE~ Q~*C~Co*~ <br />Z=],.O Qs=iTPSF Ce=_7 Co=AS PER UBC <br /> <br />Ce OVER 2OFT=.8 <br /> <br />, Q8 Ce Co DNP(20 DWP)20 <br /> MINDMARD WALL, 17 .7 .8 9_52 10.88 <br /> LEEWARD WALL_ 1.7 ,,7 ~5 5.95 6,80 <br /> ROOF LEEWARD ~7 .7 .7 8,33 9.52 OUTWARD <br /> ROOF WINDNARD 17 .? .3 3.57 A.08 ~NWARD <br /> ROOF VERT?`~ SNGW/2 +ROOF DL-ROOF HOR. <br /> ..... .i - <br /> i ABOVE ARE FO~ %2 FT BAY FACTOR FOR <br /> ~'~ ~ ~ '"'~5,~¢ ', LARGER 'pR SMALLER BAY <br /> <br />STEP i_AF'PLY WIND LOAD AND $/2 SNOW LOAD AND DEAD LOADS TO <br />THE BUILDING FRAME ANALOG AND PL,,A~E A VERTICAL ROLLER AT EAVE <br />LINE TO DETERMINE L_ATERAL RESTRAINING FORCE OF THE POST <br />FRAME.(ROL, LER REACTION) <br />STEP 2.DETERMINE FRAME STIFFNESS K) BY APPLYING P OF A <br />%000LSSHOR. POINT FORCE AT THE EASE LINE Wi. TH NO RESTRAINTS <br />ON FRAME. <br />STEP 3.SELECT THE DIAPHRAGM RESISTANCE FORCE MODIFIER(md) AND <br />THE ROOFC',LADDING SHEAR' FORCE MODIFIER FROId- TABLES' i AN[) 2 <br />THE TESTED ROOF SHEAR FC)R A 12 FT ISTEEL ROOF CAMEL Z$ 87.92 <br />LBS FOR 28 GAUGE METAL FOR A ~2 FTI SECTION THE MAX¢SHEAR <br />WOULD BE i300LBS, NOW DETERMINE K2~ FROM LUTTRELL'S <br />C=E~T/[2( I~'V )g/p+K2/( b '*t )~2] <br /> <br /> C:29~000,000,,0155 <br /> <br /> C=2543 <br /> <br /> <br />