1517 132ND ST SE 2024-11-21 - Laserfiche WebLink

Project#: CHASE ATM DRIVE-THRU SIGNATURE CANOPY RE REVERENCE 2309129E Murphys Corner Tekin 1515 132nd St SE,Everett,WA 92802 ENGINEERING WIND LOADS FOR AN OPEN MONOSLOPE ROOF WIND @ y=180°TO RIDGE(LOW TO HIGH) g<45° SECTION 27.4.3-OPEN BUILDINGS WITH MONOSLOPE,PITCHED,OR TROUGHED FREE ROOFS V= 115 mph Basic Wind Speed Rise: 0 ft x Clear Flow Surface Roughness: C h= 9.5 ft Mean Roof Height Run: 5.979 ft Obstructed Flow Exposure Category: C Risk Category: 2 KZ,= 1.0 - Topographic Factor [26.8.2 per 27.3.2] Building Type: Open Kd= 0.85 - Wind Directionality Factor [Table 26-6.1 per 26.6 per 27.3.2] G= 0.85 - Gust Effect Factor [26.9] a= 9.5 - Terrain Exposure Constant [Table 26.9.1 per Table 27.3-1] zg= 900 ft Terrain Exposure Constant [Table 26.9.1 per Table 27.3-1] Kt,= 0.849 - Velocity Pressure Coefficient [Table 27.3-1 per 27.3.2] qn= 24.43 psf Velocity Pressure [Eqn 27.3-1] qz= 0.00256*Kd*Kn*KZ,*V` Slope: 0 ft/ft Angle: 0 deg Roof slope<_45 degrees? CHECK: OK WIND @ y=180° TO RIDGE PER FIGURE 27.4-4 TABLE REPRODUCED FROM FIGURE Flow: Clear Obstructed RELEVANT VALUES INTERPOLATION Slope Case CNW CNL CNW I CNL Flow: Clear Flow: Clear A 1.2 0.3 -0.5 -1.2 Slope Case CNW CNL Slope Case CNW CNL 0 B -1.1 -0.1 -1.1 -0.6 A 1.2 0.3 A 1.2 0.3 A 0.9 1.5 -0.2 -1.2 0 B -1.1 -0.1 0 B -1.1 -0.1 7.5 B 1.6 0.3 0.8 -0.3 A 0.9 1.5 A 1.3 1.6 0.4 -1.1 7.5 B 1.6 0.3 15 B 1.8 0.6 1.2 -0.3 A 1.7 1.8 0.5 -1 PRESSURE WINDWARD LEEWARD 22.5 B 2.2 0.7 1.3 0 CASE A 24.92 psf 6.23 psf A 2.1 2.1 0.6 -1 CASE B -22.84 psf -2.08 psf 30 B 2.6 1 1.6 0.1 A 2.1 2.2 0.7 -0.9 NOTE: »Positive values indicate wind acting toward the roof surface 37.5 B 2.7 1.1 1.9 0.3 »Negative values indicate wind acting away from the roof surface A 2.2 2.5 0.8 -0.9 45 B 2.6 1.4 2.1 0.4 Canopy Area: 71.31 sf F(kip) MF(k-ft) V(kip) My(k-ft) Canopy Uplift Area Eccentricity: 1.281 ft Uplift Loads-> -1.6289 -2.087 -1.0507 -7.7451 Downward Pressue Loads-> 1.7770 2.277 1.0507 7.7451 Dead Load @ 10 PSF for downward 0.7131 0.914 Dead Load @ 2 PSF for counteracting uplift-> 0.1426 0.183 Snow Load @ 40 PSF- 2.8526 3.655 Roof Live Load @ 20 PSF > 1.4263 1.827 LC 1:1.4D 1.4 0.914 = 1.3 k-ft LC 3:1.2D+1.6S+0.5W 1.2 0.914 + 1.6 3.655 + 0.5 = 6.9 k-ft LC 3:1.2D+1.6Lr+0.5W 1.2 0.914 + 1.6 1.827 + 0.5 = 4.0 k-ft LC 4:1.2D+1.0W+0.5S 1.2 0.914 + 1.0 10.022 + 0.5 3.655 = 12.9 k-ft LC 4:1.2D+1.0W+0.5Lr 1.2 0.914 + 1.0 10.022 + 0.5 1.827 = 12.0 k-ft LC 6:1.0W(uplift)+0.9D(min.for uplift) 0.9 0.914 + 1.0 -9.832 = -9.0 k-ft 4 of 16