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• � <br />PROJECT NAME: 2711 MAPLE " <br />JOB: M10-1524 � <br />. <br />ASCE 7-10 per Chapter 26 & 27 (DIRECTIONA►L PROCEDURE) <br />Given data <br />W speed 85.0, Exposure B <br />Given Roof angle = 9.46 (2.0:12 Pitch) <br />Bldg width = 24.0 ft <br />Bldg length = 26.5 ft <br />Total height = 10.00 ft <br />Height to average roof height = 8.00 ft + 2.00/3 = 8.67 ft <br />Bldg height = 8.00 ft <br />Roof height = 2.00 ft <br />Edge Zone = 2a <br />Compute edge strip width <br />Lesser of: 10% of the least horizonta] dimension <br />0.10(Width) = 0.10(24.00 ft) = 2.4 ft CONTROLS <br />0.10(Length) = 0.10(26.50 ft) = 2.7 ft <br />40% of the eave height = 0.40(8.00 ft) = 3.20 ft <br />But not less 4% of the least horizontal dimension = 0.04(26.50 ft) = 0.96 ft OK <br />But not less 3 ft. <br />T'herefore a= 3.0 ft and the End Zone = 2a = 2(3.0) _° 6.0 ft <br />Velocity pressures, q� = 0.00256KZ KZr K� V Z IW Eq 273-1 <br />Topography factor, K��= 1.38 <br />Directionality factor, Kd= 0.85 <br />Wind pressure, p= gh G CP - qt �G Cpr ) <br />q� = 0.00256(1.38)(0.85)(85.00)2 �i.00�x� = ai.�oxZ <br />Goac! Case 1 Load Ccr.se 2 <br />Height 1t K_�c :(psfl K= c, sf <br />Diaphragm 8.0 0.70 15.19 0.57 12.37 <br />Mean Roof 9.0 0.70 15.19 0.57 12.37 <br />Max Height 10.0 0.70 I5.19 0.57 12.37 <br />Gust effect factor G= 0.85, assume Rigid Structure (ASCE 7-10 Section 26.9.1) <br />Internal pressure coefficient (G Cp; )_± 0.18 (ASCE 7-10 Table 26.11-1) <br />External wall Cp from Figure 27.4-1 <br />CUSTOM DESIGN & ENGINEERING, INC. <br />November 5, 2012 Page 2 <br />