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DESIGN WIND PRESSURE FOR ROOFTOP UNITS (per ASCE 7-16 Sec. 29.4) <br />Wind Coefficients <br />Basic Wind Speed V =95 mph <br />Risk Category =II (Table 1.5-1) <br />Exposure Category =B (Sec 26.7) <br />Wind Directionality Factor Kd =0.85 (Table 26.6-1) <br />Velocity Pressure Exposure Coefficient Kz =0.76 (Table 26.10-1) <br />Are the site and location conditions in Sec. 6.5.7.1 met?No <br />K1 =1.00 (Figure 26.8-1) <br />K2 =1.00 (Figure 26.8-1) <br />K3 =1.00 (Figure 26.8-1) <br />Topographic Factor Kzt =1.00 (Figure 26.8-1) <br />Ground Elevation Factor Ke =1.00 (Table 26.9-1) <br />ASCE 7-16 Sec 29.4.1 Rooftop Structures and Equipment for Buildings: <br />Design velocity pressure qz = 0.00256 Kz Kzt Kd Ke V2 =14.9 psf (Eq. 26.10-1) <br />Minimum design wind pressure Pnet-min =16 psf (Sec 29.7) <br />Lateral GCr =1.9 (Sec 29.4.1) <br />Vertical GCr =1.5 (Sec 29.4.1) <br />Lateral Force Fh = qh(GCr)Af =28 psf (Eq. 29.4-2) <br />Vertical Uplift Force Fv = qh(GCr)Ar =22 psf (Eq. 29.4-3) <br />Wind Design Force <br />FH =28 psf 17 psf <br />FV =22 psf 13 psf <br />LRFD ASD (0.6 x LRFD) <br />H:\2024\240417\4_Engineering\240417.Equip Anchorage <br />3900 Cover Street, Long Beach, CA 90808 562.985.3200 P 562.985.1011 F www.mhpse.com <br />4.0 <br />OCT 2024