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Home My WebLink AboutAPPROVED digitally signed design pressuresThomas J. Twomey, P.E. #25626 Saunders Residence 2831 Exchange Court, Suite A 10152 South Ocean Drive, Unit 511 West Palm Beach, Florida 33409 Jensen Beach, Florida 34957 (561) 686-5853 Design Pressures for Windows FBC 2020 / ASCE 7-16 H = 75 ft Exposure D 170 MPH (Ult.)Risk Category II q =0.00256(Kz)(Kzt)(Kd)(Ke)(V)^2 Kz =1.36 Kzt =1.00 Kd =0.85 Ke =1.00 V =170 MPH (Ult.) q =85.5 psf Velocity Pressure qd = 0.60*q =51.3 psf Design Velocity Pressure Zone 4 (Worst Case - All Openings) Aeff =10 ft^2 Effecive wind area POS.p+ =(0.90 + 0.18)*qd =55.4 psf Design Wind NEG.P- =(-0.9 - 0.18)*qd =-55.4 psf Pressures Zone 5 (Worst Case - All Openings) Aeff =10 ft^2 Effecive wind area POS.p+ =(0.90 + 0.18)*qd =55.4 psf Design Wind NEG.P- =(-1.80 - 0.18)*qd =-101.6 psf Pressures