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Project #: <br />WIND LOADS FOR AN OPEN PITCHED ROOF WIND @ ȗ = 0ͼ, 180ͼ, 90ͼ TO RIDGE Ț ч 45ͼ <br />SECTION 27.4.3 - OPEN BUILDINGS WITH MONOSLOPE, PITCHED, OR TROUGHED FREE ROOFS <br />V =95 mph Basic Wind Speed Rise:0 ft X Clear Flow Surface Roughness: C <br />h =9.90625 ft Mean Roof Height Run:10 ft Obstructed Flow Exposure Category: C <br />Width:9 ft Risk Category: 2 <br />zt = 1.0 -Topographic Factor [26.8.2 per 27.3.2] Building Type: Open <br />d =0.85 - Wind Directionality Factor [Table 26-6.1 per 26.6 per 27.3.2] <br />G = 0.85 - Gust Effect Factor [26.9] <br />Į = 9.5 - Terrain Exposure Constant [Table 26.9.1 per Table 27.3-1] <br />zg =900 ft Terrain Exposure Constant [Table 26.9.1 per Table 27.3-1] <br />h =0.8489 - Velocity Pressure Coefficient [Table 27.3-1 per 27.3.2] <br />qh =16.671 ps Velocity Pressure [Eqn 27.3-1]qz =.d h zt <br />Slope: 0 ft/ft <br />Angle: 0 deg Roof slope ” 45 degrees? CHECK: OK <br />WIND @ ȗ = 0ͼ, 180ͼ TO RIDGE PER FIGURE 27.4-5 <br />Flow: <br />Slope Case NW NL NW NL Flow: Flow: <br />Slope Case NW NL Slope Case NW NL <br />B A 0 0 A 0 0 <br />A 1.1 -0.3 -1.6 -1 B 0 0 B 0 0 <br />B 0.2 -1.2 -0.9 -1.7 A 1.1 -0.3 <br />A 1.1 -0.4 -1.2 -1 B 0.2 -1.2 <br />B 0.1 -1.1 -0.6 -1.6 <br />1.1 0.1 -1.2 -1.2 <br />B -0.1 -0.8 -0.8 -1.7 0.00 ps 0.00 ps <br />A 1.3 0.3 -0.7 -0.7 0.00 psf 0.00 psf <br />B -0.1 -0.9 -0.2 -1.1 <br />A 1.3 0.6 -0.6 -0.6 NOTE:» Positive values indicate wind acting toward the roof surface <br />B -0.2 -0.6 -0.3 -0.9 » Negative values indicate wind acting away from the roof surface <br />A 1.1 0.9 -0.5 -0.5 <br />B -0.3 -0.5 -0.3 -0.7 <br />WIND @ ȗ = 90ͼ TO RIDGE PER FIGURE 27.4-7 <br />Clear Obst. <br />A -0.8 -1.2 -13.337 psf ї -14 psf <br />B 0.8 0.5 13.337 ps ї 14 ps <br />> h 9.90625 A -0.6 -0.9 -10.002 psf ї -11 psf <br />” 2h 19.8125 B 0.5 0.5 8.3354 psf ї 9 psf <br />A -0.3 -0.6 -5.0012 psf ї -6 psf <br />B 0.3 0.3 5.0012 ps ї 6 ps <br />PRESSURE <br />” h ” 9.90625 All Angles ї Use from 0 ft to 9 ftș ” 45ͼ <br />Wind Load Analysis <br />TABLE REPRODUCED FROM FIGURE <br />Clear <br />7.5 <br />7.5 <br />15 <br />> 2h 19.8125 All Angles ї N/Aș ” 45ͼ <br />All Angles ї N/Aș ” 45ͼ <br />22.5 PRESSURE WINDWARD LEEWARD <br />CASE <br />30 CASE B <br />37.5 <br />45 <br />CN <br />PRESSURE <br />Obstructed RELEVANT VALUES INTERPOLATION <br />Clear Clear <br />0 <br />0 0 <br />Raising Cane's RC1032 Drive Thru Canopy25070751415 N. Bristol St, Santa Ana, CA 92706 <br />5 of 7