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Dead Load <br /> gpipe`=293.7 lbf weight of pipe (20" Sch. 40) including contents <br /> Lpipe:=4 ft length of pipe tributary to tank <br /> Pldh `=2523 lbf+gpipe•Lpip, =3697.8 lbf weight of unit <br /> Wind Load <br /> Forces imparted on the tanks by the wind will be determined in the ASCE 7 as permitted by IBC <br /> Section 1609.1.1. The provisions for the tanks will therefore be determined using Chapters 26 <br /> and 29. See the calculations below. <br /> V:=109 mph basic wind speed per Figure 26.5-1B <br /> B exposure category per Section 26.7 <br /> G:=0.85 gust effect factor per Section 26.11.4 <br /> KZ:=0.57 velocity pressure exposure coefficient per Table 26.10-1 <br /> Kzt:=1.13 topographic factor per <br /> Kd:=0,g5 wind directionality factor per Table 26.6-1, <br /> Footnote a <br /> Ke:=1 ground elevation factor per Section 26.9 <br /> 2 <br /> qz:=0.00256 KZ•KZt•Kd•e• mph V psf=18.6 psf velocity pressure per Equation 7.6.1U-1 <br /> P <br /> Cf:=1.425 force coefficient per Figure 29.4-1 <br /> Fdhw:=gz C' Cf (Ldh*hdh)=577 lbf design wind force on tank per Equation 29.4-1 <br /> n'dhw:=Fdhw•COGdh=0.8648 kip ft overturning moment on tank <br /> P = h1dhW =288.2633lbf vertical force on anchors <br /> dh v:9• (2 d ) <br /> a nch <br /> P = Fdhca =144.1316 lbf horizontal force on anchors <br /> dhh;�' q <br /> Seismic Loads <br /> Forces due to earthquakes will be determined using Chapters 11 and 15 of the ASCE 7 per <br /> Section 1613.1 of the IBC. The site-specific parameters below are as provided from the ASCE <br /> Hazard Tool. <br /> D assumed seismic soil class <br /> Ie:=1.50 seismic importance factor per Section 1.5.1 <br /> SS:=1.369 mapped risk-targeted maximum considered earthquake spectral <br /> acceleration parameter at short periods per ASCE 7 Hazard Tool <br /> F :=1.0 short-term site coefficient per Table 11.4-1 <br /> a <br /> Sots`—Faa -SS=1.369 mapped risk-targeted maximum considered earthquake <br /> Spec ri.a a,-"=leration parame: •­ at short periods <br /> project 2405-0007 date 2/25/2025 <br /> PSE <br /> Peterson Structural Engineers,Inc. <br /> www.psengineers.com designer TJC sheet 11 of 46 <br /> PITEM STAUCTUAAIEMGINEEM <br />