Laserfiche WebLink
Harriott Valentine Engineers Inc. <br /> WIND DESIGN <br /> ASCE 7-16 <br /> Simplified Envelope Method (Chapter 28) <br /> ps= Kzt I ps30 =adjustment factor= 1.00 <br /> I = importance factor= 1.00 <br /> Kzt=topographic factor= 1.00 <br /> Part of Figure 28.6-1 -Adjustment Factor Zone <br /> for Building Height and Exposure, Computation <br /> Mean Roof Height Exposure <br /> (ft) B C D a= 10%of least horizontal dimension or <br /> 15 1.00 1.21 1.47 0.4 x h,whichever is smaller, but not less <br /> 16 1.00 1.23 1.49 than either 4%of least horizontal dimen- <br /> 17 1.00 1.24 1.50 sion or 3 feet. <br /> 18 1.00 1.26 1.52 <br /> 19 1.00 1.27 1.53 w= 48.50 ft x 0.1 = 4.85 ft <br /> 20 1.00 1.29 1.55 h= 24.50 ft x 0.4 = 9.80 ft <br /> 21 1.00 1.30 1.56 w= 48.50 ft x 0.04= 1.94 ft <br /> 22 1.00 1.31 1.57 <br /> 23 1.00 1.33 1.59 a= 4.85 ft <br /> 24 1.00 1.34 1.60 2a= 9.70 ft <br /> 25 1.00 1.35 1.61 <br /> 26 1.00 1.36 1.62 Zone B-end zone of roof <br /> 27 1.00 1.37 1.63 Zone A-end zone of wall <br /> 28 1.00 1.38 1.64 <br /> 29 1.00 1.39 1.65 Zone D-interior zone of roof <br /> 30 1.00 1.40 1.66 Zone C-interior zone of wall <br /> Part of Figure 28.6-1 -Method 2 <br /> Design Wind Pressure, ps3o <br /> Basic Roof Roof Horizontal Pressures(psf) <br /> Speed Angle Pitch A B C D <br /> 0 to 5 flat 15.3 -7.9 10.1 -4.7 <br /> 10 2 17.2 -7.1 11.4 -4.1 <br /> 98 15 3 19.1 -6.4 12.8 -3.6 <br /> 20 4 21.1 -5.6 14.0 -3.1 <br /> 25 6 19.1 3.1 13.8 3.2 <br /> 30 to 45 7 to 12 17.1 11.7 13.6 9.4 <br /> Design Wind Pressure, ps <br /> Basic Roof Roof Horizontal Pressures(psf) <br /> Speed Angle Pitch A B C D <br /> 0 to 5 flat 15.3 -7.9 10.1 -4.7 <br /> 10 2 17.2 -7.1 11.4 -4.1 <br /> 98 15 3 19.1 -6.4 12.8 -3.6 <br /> 20 4 21.1 -5.6 14.0 -3.1 <br /> 25 6 19.1 3.1 13.8 3.2 <br /> 30 to 45 7 to 12 17.1 11.7 13.6 9.4 «< <br /> 1932 First Avenue,Suite 720 <br /> Seattle,Washington 98101-2447 12/13/2019 <br /> tel 206-624-4760)fax 447-6971 Page_of <br /> 0//;(1/ <br />