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WIND LOADING ANALYSIS - Roof Components and Cladding <br />Per ASCE 7-10 Code for Bldgs. of Any Height with Gable Roof 0 <= 450 or Monoslope Roof 0 < <br />Using Part 1 & 3: Analytical Procedure (Section 30.4 & 30.6) <br />Job Name:Reyes Residence Subject: <br />Job Number:S14-352 Originator: <br />Input Data: <br />Wind Speed, V =110 mph (Wind Map, Figure 26.5-lA-C) <br />Bldg. Classification = _ U _ (Table 1-1 Occupancy Category) <br />Exposure Category = _ C (Sect. 26.7) <br />Ridge Height, hr = 14.53 ft. (hr >= he) <br />Eave Height, he =9.00 ft. (he <= hr) <br />Building Width = 34.00 ft. (Normal to Building Ridge) <br />Building Length = 48.00 ft. (Parallel to Building Ridge) <br />Roof Type = Gable (Gable or Monoslope) <br />Topo. Factor, 1<zt =1-00 (Sect. 26.8 & Figure 26.8-1) <br />Direct. Factor, Kd =0.85 (Table 26.6) <br />Enclosed? (Y/N) Y (Sect. 28.6-1 & Figure 26.11-1) <br />Hurricane Region? N <br />Component Name = Fastener (Purlin, Joist, Decking, or Fastener) <br />Effective Area, Ae =170 ft.A2 (Area Tributary to C&C) <br />Overhangs? (Y/N) N (if used, overhangs on all sides) <br />Checker: <br />B <br />Plan <br />hr <br />h <br />Resulting Parameters and Coefficients: Elevation 1 <br />Roof Angle, 0 =18.02 deg. <br />Mean Roof Ht., h = 11.77 ft. (h = (hr+he)/2, for roof angle >10 deg.) <br />Roof External Pressure Coefficients, GCp: <br />GCp Zone 1 -3 Pos. =0.30 (Fig. 30.4-2A, 30.4-2B, and 30.4-2C) <br />GCp Zone 1 Neg. =-0.80 (Fig. 30.4-2A, 30.4-28, and 30.4-2C) <br />GCp Zone 2 Neg. =-1.20 (Fig. 30.4-2A, 30.4-2B, and 30.4-2C) <br />GCp Zone 3 Neg. =-2.00 (Fig. 30.4-2A, 30.4-2B, and 30.4-2C) <br />Positive & Negative Internal Pressure Coefficients, GCpi (Figure 26.11-1): <br />+GCpi Coef. =0.18 (positive internal pressure) <br />-GCpi Coef. =-0.18 (negative internal pressure) <br />If z <= 15 then: Kz = 2.01*(15/zg A(2/a), If z > 15 then: Kz = 2.01*(z/zg)9/00 (Table 30.3-1) <br />a = 9.50 (Table 26.9-1) <br />zg =900 (Table 26.9-1) <br />Kh =0.85 (Kh = 1<z evaluated at z = h) <br />Velocity Pressure: qz = 0.00256*Kz*Kzt*Kd*VA2 (Sect. 30.3.2, Eq. 30.3-1) <br />qh =22.35 psf qh = 0.00256*Kh*Kzt'Kd*VA2 (qz evaluated at z = h) <br />Design Net External Wind Pressures (Sect. 30.4 & 30.6): <br />For h <= 60 ft.: p = qh*((GCp) - (+AGCpi)) (psf) <br />For h > 60 ft.: p = q*(GCp) - qi*(+AGCpi) (psf) <br />where: q = qh for roof <br />qi = qh for roof (conservatively assumed per Sect. 30.6) <br />1I W 0 <br />.4