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Submerged Weight of Fill Wedge Acting on the Tank from Side The submerged weight of the backfill wedge acting on the sides of the tank will be considered for the tank cylinder length only and will only be added to the total anchoring force for the NO ANCHORING SYSTEM condition. Angle of Tank Side Based on full scale float out tests in peagravel by Owens Corning , the Wedge maximum wedge angle is 23 degrees. A conservative value of 15 degrees will be used , but any value between 0 and 23 degrees may be selected . The width of the wedge at grade will also be limited based on testing to 32" for a single tank or 112 of the tank spacing for multiple tanks side by side . Installation = " Tanks Side by Side " Spacingtk = 36 - in Aside tk : = Odeg Typically use a wedge angle of 15 degrees. The depth of the soil wedge will be to grade and the wedge will be considered to be all fill even though there may be concrete at the top that extends beyond the tank plan view. This will be conservative . Effective Width of Tank Side Wedge at Grade Wtk wedge : = mir>I 32in , I ODtk + Covertk) tanAside_tk�J if Installation = "No Adjacent Tanks " minL0 . 5 • Spacingtk , 32in , 1 ODtk + CovertkJ • tan(Aside_tk�J otherwise 2 Wtk wedge = Ob in effective width of the tank wedge at grade ( ODtk 1 3 includes Volume of the Tank Side Voltk wedge • = 2 + Covertk) ' Wtk_wedge• Ltk_cyl — 0 ft both Fill Wedges — sides Submerged Weight of Wttk wedge Voltk wedge• �Ysub_fill = O lbf Tank Side Fill Wedges this anchoring weight will only be added to the case of a tank without any anchoring system Submerged Weight of Fill Wedge Actinq on the Tank at the Ends The submerged weight of the backfill wedge acting on the ends of the tank will not be considered . Tank Buoyancy, Loves Ripon , Store 223 , Date Printed : 6/12/2020 Page 10 of 25 Ripon CA , Dwg 22022-001 , 10 ft Dia ,