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<br />COMPANY: Sign Service Inc. <br />PROJECT: YMCA <br /> <br />10' - 5 " Area 1 <br /> <br />Robert W. Wall <br />Check by: <br />Sample Calculations <br />Wind Load = WL <br />WL = Cf*WIND ksf <br />WL =.7 * 3.27 <br />Force = .02291 * 41.6 <br />Force = .95487 kips <br /> <br />Zreq = Moment * 12 <br />fb * NC <br /> <br />o <br />I <br />~ <br /> <br /> <br />Area 2 <br /> <br />fb = 21.0 ksi for Steel pipe <br />fb = 27.6 ksi for Steel pipe <br />fb = 19.0 ksi for Aluminum <br />LDF = 1.33 <br />Zreq = 1.909 * 12 <br />24 * 1 .33 * 1 <br />Zreq = .7163 in3 <br /> <br />Concrete approx. .333 cu. yds <br />Concrete is 3000 psi at 28 days <br />Wind loads - SBCCI1994, ASCE 7-93 <br />Steel - AISC-ASD Ninth Edition <br />Soil bearing capacity 2000 psf (2 ksf) <br /> <br />o <br />I <br />N <br />~ <br /> <br /> <br />5 "x .258" ASTM A53-SIB Pipe <br />Zact = 5.45 in3 > Zreq = 3.76 in3 <br /> <br />o <br />I <br />"'" <br /> <br />I I <br />I I <br />I I <br />I I <br />I I <br />I I <br /> <br />1 '- 6 " <br />X~6" <br /> <br />WIND - ASCE Coastal - Exposure C - <br />Cf Wind <br />s <br /> <br /> <br />1.00 0.70 <br />2.00 0.70 <br />TOTALS <br /> <br />32.74 <br />32.74 <br /> <br />41.67 <br />5.33 <br />47.00 <br /> <br />10.00 <br />4.00 <br /> <br />0.95 <br />0.12 <br />1.08 <br /> <br />1.91 <br />10.04 <br /> <br />0.72 <br />3.77 <br /> <br />MEAN SIGN HEIGHT (HB) = MOMENT AT GROUND = 10.03 k-ft = 9.31 ft <br />CHECK FOOTING TOTAL FORCE 1.077 kips <br /> <br />Pallow = S * b * d " 2 b = width of footer (ft) <br />2.37 * d + 2.64 * HB d = height of footer (ft) <br />P allow = 2.5 * 1.5 * 4 "2 = 1.76 (kips) > 1.07 (kips) is O.K. <br />2.37 * 4 + 2.64 * 9.31 <br /> <br /> <br />}-on <br /> <br />