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THE ROOF L..ENGTH FROM CENTER OF EAVE GIRT <br />PURLIN <br /> <br />C=29 ~000,000' .0166 <br /> <br /> [2.( 1+ .3 )~l .2+2543/( L* .0165 )^2 <br /> <br />TO CENTER OF RIDGE <br /> <br />Ch=C*(COS A)^2 <br /> <br />DETERMINE THE RELATIVE STIFFNESS OF FRAME TO ROOF <br />k/Ch= <br /> <br />DETERMINE mD AND mS REDUCTION F~C£TORS FROM TABLE 1 AND 2 <br />CASED UPON THE STRUCTURE HAVIN,G-~2_~ FRAMES. <br /> <br />STEP 4: CALCULATE THE RESISTANCE FORCE TO S~DESWAY AND SHEAR <br />FORCE ~N ROOF CLADDING <br /> <br />VALUE OF CLADDING SHEAR FORCE=mS *ROLLER REACTION FROM STEP <br /> <br />STEP C:DISTRIBUTE THE SICTANCE FORCE TO SIDESWA? ~QUALLY AT <br />TOP CHORD NODES OPPOSITE THE WIND LOADING ON THE WALLS <br />T~,¢~J'dAXIMUM COMBTNE STRESS,~S INTERACTION VALUE = <br /> ~'..~< 1 .0 THEREFORE 6X ~-"IS O.K. <br /> <br />STEP 6:CHECK SHEAR IN ROOFING NEAR ENDWALLS. ROOF CLADDTNG <br />SHEAR FORCE(STEP 4)/CUTLDING WIDTH MUST BE LESS OR EQUAL TO <br />THE ADJUSTED SHEAR CROM STEP 3 ADJUSTED FOR LOAD DURATION. <br /> <br /> t~__/WIDTH '~'"--' '%~- (=l17~22PLF <br /> <br />CHECK SHEAR TRANSFERRED TO ENDWALL DIAPHRAM. ROOF CLADDING <br />SHEAR FORCE (STEP 4) /BUILDING WIDTH LESS DOOR OPENINGS MUST <br />BE LESS OR EQUAL TO USEABLE SHEAR FROM STEP 3 ADJUSTED FOR <br />LOAD DURATION (1.333) <br /> ENO MINUS DOOR = USEABLE <br /> / WIDTH USEABLE = ~ <br />.......... (ilT.22PLF <br /> <br />NEED i~ FT TO DEVELOP SHEAR <br /> <br />~N END WALL <br /> <br /> <br />