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WIND LOADING ANALYSIS - Main Wind-Force Resisting System Per ASCE 7-22 Code for Enclosed or Partially Enclosed Buildings Job Name:18-SANA-24 Subject: Job Number:18-SANA-24 Originator:Checker: Input Data: Wind Speed, V =120 mph, (ASCE 7-22 26.5.1) Exposure Category =B (ASCE 7-22 26.7.3) Ridge Height, hr =14.50 ft. (hr >= he) Eave Height, he =9.33 ft. (he <= hr) Building Width =50.25 ft. (Normal to Building Ridge) Building Length =47.16 ft. (Parallel to Building Ridge) Roof Type =Gable (Gable or Monoslope) Topo. Factor, Kzt =1.00 ASCE 7-22(Sect. 26.8 & Fig 26.8-1) Direct. Factor, Kd =0.85 (Table 26.6-1) Enclosed? (Y/N)Y (Sect. 26.2 & Table 26.11-1) Hurricane Region?N Resulting Parameters and Coefficients: Roof Angle, q =11.63 deg. Mean Roof Ht., h =11.92 ft. (h = (hr+he)/2, for angle >10 deg.) Check Criteria for a Low-Rise Building: 1. Is h <= 60' ?Yes, O.K. 2. Is h <= Lesser of L or B?Yes, O.K. External Pressure Coeff's., GCpf (Fig. 28.3-1): (For values, see following wind load tabulations.) Positive & Negative Internal Pressure Coefficients, GCpi ASCE 7-22(Table 26.13-1): +GCpi Coef. =0.18 (positive internal pressure) -GCpi Coef. =-0.18 (negative internal pressure) If h < 15 then: Kz = 2.01*(15/zg)^(2/a) (Table 26.10-1) If h >= 15 then: Kz = 2.01*(z/zg)^(2/a) (Table 26.10-1)(Note: z not < 30' for Exp. B) a =7.00 (Table 26.11-1) zg =1200 (Table 26.11-1) Kz =0.70 (Kh = Kz evaluated at z = h) Velocity Pressure: qz = 0.00256*Kz*Kzt*Ke*V^2 ( Eq. 26.10-1) qh =25.83 psf qh = 0.00256*Kz*Kzt*Ke*V^2 (qz evaluated at z = h) Design Net External Wind Pressures: p = qh*Kd[(GCpf) - (+/-GCpi)] (psf, Eq. 28.3-1) Wall and Roof End Zone Widths 'a' and '2*a' (Fig. 28.3-1): a =4.72 ft. 2*a =9.43 ft. q o L B hr he h<=60' Wind Plan Elevation L 5