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Wind Load Calculation for Other Structures <br />(Reference: 2018 IBC Section 1609 & ASCE 7-16 Chapter 29) <br />Wind Velocitv Pressure: <br />Mean Roof Height of Building, h (ft) = <br />128 <br />(Per Architectural Drawings) <br />Basic Wind Speed, Vza (mph) = <br />100 <br />(ASCE Figure 26.5-1) <br />Exposure Category = <br />B <br />(ASCE Section 26.7.3) <br />Risk Category = <br />II <br />(ASCE Table 1.5-1) <br />Velocity Pressure Exposure Coeff, K or Kz = <br />1.06 <br />(ASCE Section 26.10.1 & Table 26.10.1) <br />Topographic Factor, K„ = <br />1.00 <br />(ASCE Section 26.8 & Figure 26.8-1) <br />Wind Directionality Factor, Kd = <br />0.85 <br />(ASCE Section 26.6 & Table 26.6-1) <br />Ground Elevation Above Sea Level, zg (ft) = <br />133 <br />(ASCE Table 26.9-1) <br />Elevation Factor, V = <br />1.00 <br />(ASCE Section 26.9 & Table 26.9-1) <br />Velocity Pressure, qz (psf) <br />= 0.00256KhKztKdKeVA2 (ASCE Eq. 26.10-1) <br />qz = 22.95 psf <br />Design Wind Load on Other Structures <br />Horiz Gust Effect/Force Coefficient, (GCr) = <br />1.9 <br />(ASCE Section 29.4.1) <br />Vert Gust Effect/Force Coefficient, (GCr) = <br />1.5 <br />(ASCE Section 29.4.1) <br />Projected Area Normal to Wind Dir, Aior A, (ft) = <br />A, * A, <br />(Projected Wind Area) <br />Design Lateral Wind Load, F (lbs) = <br />gz(GCr)Af <br />(ASCE Eq. 29.4-2 & 29.4-3) <br />C <br />0 <br />ENGINEEF21N6 <br />Suite 200 <br />Edmonds, WA 98020 <br />Horiz Force, Fh = 43.6 psf x Af <br />LRFD <br />Vert Force, Fv = 34.4 psf x Ar <br />Horiz Force, Fh = 26.2 psf x A, <br />ASD <br />Vert Force, Fv = 20.7 psf x Ar <br />Kh or K- IASCE Table 26.10-11 <br />Height <br />2 (ft) <br />Exposure B <br />Exposure C <br />Exposure D <br />0 <br />0.57 <br />0.85 <br />1.03 <br />35 <br />0.57 <br />0.85 <br />1.03 <br />20 <br />0.62 <br />0.90 <br />1.08 <br />25 <br />0.66 <br />0.94 <br />1.12 <br />30 <br />0.70 <br />0.98 <br />1.16 <br />_ <br />40 <br />0.76 <br />1.04 <br />1.22 <br />_ <br />50 <br />0.81 <br />1.09 <br />1.27 <br />60 <br />0.85 <br />1.13 <br />1.31 <br />70 <br />0.89 <br />1.27 <br />1.34 <br />80 <br />0.93 <br />1.21 <br />1.38 <br />90 <br />0.96 <br />1.24 <br />1.40 <br />100 <br />0.99 <br />1.26 <br />1.43 <br />120 <br />1.04 <br />1.31 <br />1.48 <br />140 <br />1.09 <br />1.36 <br />1.52 <br />160 <br />1.13 <br />1.39 <br />1.55 <br />180 <br />1.17 <br />1.43 <br />1.58 <br />200 <br />1.20 <br />1 1.46 <br />1 1.61 <br />BEL <br />8/8/2022 <br />Wind Loads For Components and Systems I - I ) <br />EVERETT CITY HALL <br />N.T.S. <br />9 <br />