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COMPUTATION SHEET <br /> <br />CHARLES L. YOUNGMAN, ...C- <br />131'5 Llbe~ty St_ SE <br /> Ig~l,em, OR 973024245 <br /> (503) 364,-8207. FAX (503) 364-07115 <br /> <br />Ct'EUT <br />PROJECT <br /> <br />~ - U.B,C. METHOD 2 (PROJECTED AREA METHOD) <br /> 80 mph, EXP. B <br /> <br />P = qsCcCqI <br /> <br /> tiT. <br /> <br />(0-I5') <br />(15-20') <br />(20-25') <br />(25~30') <br />00-40') <br /> <br />I = 1.0 <br /> <br />qs = 16.4 PSF <br />Cq = 1.3 (HORIZONTAL); 0.7 (UPLIFT) <br /> <br />REVIEWER <br /> <br />0.62 <br />0.67 <br />0.72 <br /> <br />0.76 <br />o.84 <br /> <br />ZONE 3 <br /> <br />PRIMARY FORCES <br /> <br /> WIND PRESSURE <br /> <br />P=I 6.4(0.62)(1.3)(1.0) = 13.2 PSF <br />P=16.4(0.67)(1.3)(1.0) = 14.3 PSF <br />P=16.4(0.72)(1.3)(1.0) = 15.4 PSF <br />P=16.4(0.76)(1.3)(1.0) = 16.2 PSF <br />P.=16.4(0.84)(1.3)(1.0) = 17.9 PSF <br /> <br />V = (ZIC/Rw)W (PRIMARY) <br /> <br />Z=0.3 <br />I= 1.0 <br />C = 2.75 <br />Rw= 53 <br /> <br />xt = [(o.3)(1.o)(2.75)/( ~)lw = ~ <br /> <br />ELEMENT FORCES <br />Fp = ZlCpWp <br /> <br />Cp = 0,75' <br /> <br />Fp = (0.3)(l.0)(0r7~Wp = O,L.~QL~p <br /> <br /> <br />