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PROJECT NAME: BRAINARD RESIDENCE <br />ASCE 7-05 METHOD 2 Given data <br />W speed 85.0, Exposure B <br />Given Roof angle = 22.62 (5.0:12 Pitch) <br />Bldg width = 24.0 ft <br />Bldg length = 42.0 ft <br />Total height = 22.50 ft <br />Height to average roof height = 17.50 ft + 5.0013 = 19.17 ft <br />Bldg height = 17.50 ft <br />Roof height = 5.00 ft <br />Edge Zone = 2a <br />Compute edge strip width <br />Lesser of: 10% of the least horizontal dimension <br />0.10(Width) = 0.10(24.00 ft) = 2.4 ft CONTROLS <br />0.10(Length) = 0.10(42.00 ft) = 4.2 ft <br />40% of the eave height = 0.40(17.50 ft) = 7.00 ft <br />But not less 4% of the least horizontal dimension = 0.04(42.00 ft) = 0.96 ft <br />But not less 3 ft. <br />Therefore a = 3.0 ft and the End Zone = 2a = 2(3.0) = 6.0 ft <br />Velocity pressures, qz= 0.00256KzKz,Kd V 2Jw Eq 6-15 <br />Topography factor, &= 1.38 <br />onality factor, Kd= 0.85 <br />qh G Cp - q? (G C j ) <br />r q 0. 256�� 5)(85.00)2 (1.00)Kz = 21.70Kz <br />', ' "'?v xI � <br />Load Case I <br />Load Case 2 <br />t <br />K_ <br />ct_(psfl K_ q <br />'" is agm <br />9.5 <br />0.70 <br />15.19 <br />0.57 <br />12.37 <br />15.0 <br />0.70 <br />15.19 <br />0.57 <br />12.37 <br />Diaphragm <br />17.5 <br />0.70 <br />15.19 <br />0.62 <br />13.45 <br />Mean Roof <br />20.0 <br />0.70 <br />15.19 <br />0.62 <br />13.45 <br />Max Height <br />22.5 <br />0.70 <br />15.19 <br />0.66 <br />14.32 <br />Gust effect factor G = 0.85, assume Rigid Structure (ASCE 7-05 Section 6.5.8.1) <br />Internal pressure coefficient (G CP,) _ ± 0.18 (ASCE 7-05 Section 6.5.8.1) <br />External wall Cp from Figure 6-6 <br />CUSTOM DESIGN & ENGINEERING, INC. <br />OK <br />December 12, 2009 Page 2 <br />►1 <br />