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F ROJECT NAME: THOMPSON GARAGE <br />JOB:JZ-1129 <br />ASCE 7-05 METHOD 2 Given data <br />W speed 85.0. Exposure B <br />Given Roof angle = 18.43 (4.0:12 Pitch) <br />Bldg width = 35.0 ft <br />Bldg length = 36.0 ft <br />Total height = 0.83 fi <br />Height to average roof height = 8.00 ft + 5.83/3 = 9.94 ft <br />Bldg height = 8.00 ft <br />Roof height = 5.93 ft <br />Edge Zone - 2a <br />Compute edge strip width <br />Lesser of., 10% of the least horizontal dimension <br />0.10(W idth) = 0.10(35.00 (1) = 3.5 ft <br />0.10(Length) = 0.10(36.00 ft) = 3.6 ft <br />40% of the cave height = 0.40(8.00 ft) = 3.20 ft CONTROLS <br />But not less 4% of the least horizontal dimension = 0.04(36.00 ft) = 1.40 ft OK <br />But not less 3 ft. OK <br />Therefore a = 3.2 ft and the End Zone = 2a = 2(3.2) = 6.4 ft <br />Velocity pressures, q,=0.00256K,K„K,-V21, Eq6-15 <br />Topography factor, K„= 1.38 <br />Directionality factor, Ka= 0.85 <br />Wind pressure, p =geGC,-q,(GCp) <br />q, = 0.00256(1.38)(0.85)(85.00)= (1.00)K,= 21.70K, <br />Load Case I Load Case 2 <br />�n <br />naL <br />Qf/� �O.fiP' � t 8.0 0.70 15.19 0.57 12.37 <br />Iofean R 10.9 0.70 15.19 0.57 12.37 <br />N 1�� Y alas 'I 1ci 13.8 0.70 15.19 0.57 12.37 <br />Gust effect factorV- 0.85, assume Rigid Structure (ASCE 7-05 Section 6.5.8.1) <br />A <br />Internal presslugftocf icicnt (G Cp) =t 0.18 (ASCE 7-05 Section 6.5.8.1) <br />External mall.Crfram Vigurc 6-6 <br />Windward wall, C,= 0.80 for all L /B ratios <br />Side wall, Cr= -0.70 for all L /B ratios <br />CUSTOM DESIGN & ENGINEERING, INC. <br />February 9, 2009 Page 2 <br />