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,. . . � i <br /> .............................................................................................................................................................................. <br /> .............................................................................................................................................................................. <br /> .�.•:.�::::::::::::•:::.�:. <br /> �:::'..���::::::=::�:::::�::::`-:.�.�:.� :::���:::::::�:�:::�:::.:::::f�:�::::: � :�:�::::;:;::::::.;:: <br /> . �:..�...�:�.::.:.::�:��:�::�:����:�. <br /> .........................::.�:::..:�:::::.::::::.:�::::::.�`::�:�:::::::::�::.:::::.::::::::::::::::::.:::::.�`�::::::::::::.:::::::::::::::.::::::::.:_::::::::;::::::::: <br /> VERTICAL ANALYSI� <br /> Roof Ve�-ticai Loading: Live Load LL 40 psf vertically on hor¢. proj. <br /> Dead Load DL 7.2 psf veftir_-ally on �ctual proj. <br /> ; � <br /> Duratio� of Laad �tress {nrx�se = 1.15 <br /> : Raof Pi�ch 4112 = d' 18.43 degrees <br /> Live L d Normel to Roof = (LL){cos^2 d'� = 36.0 psf <br /> Dead L ��i Normal to Rovf = (QL}tcos d) = fi_83 psf <br /> Tot�t N' m�! Load, TL = 42.83 psf <br /> Contrib�,Itay Width = Bay Width = 3 ft ----� w 12�lbtft <br /> 4 x 6 S��tion Prop�rfies: Select W�stem R�d Cecl�u- <br /> Species Properfies: <br /> Width I b 3.5 <br /> depth ! d 5.5 Fb 1100 psi <br /> Area A 19.25 in"2 Fv 75 psi <br /> Section t�lodutus S 17.65 in"3 E i .10E+Ofi psi <br /> Nbment�f Inertia l 48.53 in"4 � <br /> Max SpaMh i n S hear = �Fv}{D iration)(2}(2�{A�i{3}�w� _ ' i 7.23 ft <br /> Max �en in Bending = [tFb}(Di.ration��8}(S}J�w�{12)]�`(i�2} = 10.76 ft <br /> Max Spar1 in TL Defl�ction = [(384}(E}�I�/(v�{wj{180)�144}]"{1 f 3) = 10.72 ft <br /> Max Spar+� i t� LL Defl = I{384}{E��I}J(5}�w}{W�l.}t�40j�144}J"{1 f3) = 10_32 ft �--- <br /> A/l�c Allowable Span meas�red Horizontafly = (Max Span)(cosd} = 9.79 ft <br /> Actua! fVtaucimum Span = {9'-3.�"� — t�.5" + 2.2�°} = 8.90 ft � 9.79 ft QK <br /> I <br /> � <br /> ' . <br /> i <br />