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Pitzer&Associates, PLLC 23-109 1SL 4GL ESDLR IBC ver18-1.xmcd 4/12/2023 <br /> 3.0 Wind Analysis- IBC Simplified Method <br /> Basic Wind Speed(MPH), BWS:= 110 <br /> Wind Exposure Category(WEC), WEc 1 <br /> Wind Exposure,enter (1)-exposure"B", (2)-exposure"C", (3)-eposure"D" <br /> Mean Roof Height(MRH), MRH 15 <br /> Pnet=kKztP et o <br /> Design Wind Loads <br /> Roof Pitch <br /> 4:12 <br /> Simplified Wind Design Pressures(Main Wind Force Resisting System) <br /> ps30(Exposure Bath=30 feet,Kz-r=1.0 with Iw=1.0)(psf) <br /> Roof Rise enter. (1)-Flat (2)-2, (3)-3,(4),4,(5)6,(6),7 to 12 • 4 <br /> ASCE 7 Simple Wind Pressures <br /> ZoneA=26.6 psf ZoneB=0•psf ZoneC= 17.70.psf ZoneD=0 psf <br /> ZoneE=-23.10•psf ZoneF=-16•psf ZoneG=-16•psf ZoneH <br /> Height&Exposure Adjustment Coefficient,?. <br /> [► Adjustment Factor a= 1.00 <br /> Topographic Factor,Kzt <br /> Topographic Kzt= 1.0 <br /> Factor <br /> Design Wind Pressures <br /> Simplified Wind Design Pressures-combined windward&leeward pressures <br /> over projected area: <br /> PA:= X.Kzt•ZoneA PE:=X-Kzt-ZoneE <br /> PB:= a•Kzt•ZoneB PF:=a•Kzt•ZoneF <br /> PC:=X-Kzt•ZoneC PG:=a•Kzt-ZoneG <br /> PD:=X-Kzt-ZoneD PH:=X-Kzt•ZoneH <br /> Least Horizontal Dimension,(LHD) <br /> LHD 52•ft h:=8•ft <br /> The smaller of <br /> 10%of least horizontal dimension al:=.1•LHD al=5.2ft <br /> 0.4h a2:= .4-h a2=3.2ft <br /> But not less than: Wind Design Pressures <br /> 4%of least horizontal dimension a3:= .04 LHD a3=2 ft -2 -2 <br /> 3 feet a4:=3-ft PA=26.6 Ib PE=-23.1 f� -lb <br /> 2•a1= 10ft Controls PB=Oft 2-lb PF=-16ft Ib <br /> Pc= 17.7ft 2•Ib PG=-16ft 2-lb <br /> PD=Oft 2•Ib PH=-12.2ft 2-lb <br /> 1SL Version 18.1 Page 3 <br />