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2 design earthquake spectral response acceleration <br /> SDS:=3•SMS=0.913 parameter at short periods per Equation 11.4-3 <br /> R :=2.5 seismic coefficient for mechanical heat exchangers <br /> P <br /> per Table 13.6-1 <br /> a :=1 <br /> p <br /> 0.4.d .SAS•"'dh <br /> VdhE`- III(PR =809.9661 lbf seismic base shear per Equation 13.3-1 <br /> l Ie <br /> p:=1.0 redundancy factor per Section 12.3.4 <br /> Ehdh'=p-VdhE=8101bf horizontal seismic load effect per Equation 12.4-3 <br /> Evdh:=0.2'SoS'radh=675lbf vertical seismic load effect per Equation 12.4-4a <br /> MdhE`=VdhE'COGdh=1.2149 kip ft overturning moment on tank <br /> P = MdhE =182.4248 lbf vertical force on anchor line about length <br /> dh vEl ' (2.L ) <br /> `` anch <br /> P _ MdhE =404.9831 lbf vertical force on anchor line about width <br /> ll <br /> dhvE2' (2,d dRCh 1 <br /> P VdhE =202.491516E horizontal force on anchor line <br /> dhh{9' 4 <br /> Equipment 4 Design Loads <br /> Dtankl =10 ft diameter of tank <br /> htankl '=164.4 in height of tank <br /> COG, :=62.11 in height of center of gravity <br /> Dead Load <br /> gpipe:=293.7 lbf weight of pipe (20" Sch. 40) including conten-s <br /> ft <br /> L pipe:=5 ft length of pipe tributary to tank <br /> P�1E`=8327.3 lbf+gpipe-Lpipe=97 95.8 lbf weight of empty tank <br /> PIt1F'=60000 lbf+gpipe-Lpipe=614 68.5 lbf weight of full tank <br /> Snow Load <br /> The snow load will be included in this design as well. Per the City of Everett, the minimum <br /> design snow load is 25 psf. <br /> S:=25 psf snow load per city of Everett <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. Wind loads are considered to act on empty tanks. <br /> V:=109 mph basic wind speed per Figure 26.5-18 <br /> g exposure category per Section 26.7 <br /> project 2405-0007 date 2/25/2025 <br /> PSE Peterson Structural Engineers,Inc. <br /> www.psengineers.com designer TJC sheet 12 of 46 <br /> PEIERSM STRUCTURAL ENGINEERS <br />