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Tank Inputs tank dimensions, weights, and volumes are supplied by the tank manufacturer <br />Tank Type Type  Tank type: SW for single wall, DW for double <br />wall, TW for triple wall <br />Type "DW" <br />Flag to set if the <br />design is for a tank <br />with a dry or wet <br />annular space <br />Annular_Space  <br />Annular_Space "Wet" <br />Tank Weight if Dry Wttk_dry 8550 lbf value provided by the tank manufacturer <br />Tank Weight if Wet Value provided by the tank manufacturer for <br />reference. Only the dry weight is used in the <br />calculations. For a wet tank, the vol of the annular <br />space is not buoyannt since it is filled with liquid. <br />Wttk_wet 6550 lbf <br />Tank Weight Factor Wtfactor 80% Normally use 80% of the tank drawing weight. The <br />drawing tank weight value is reduced because it is a <br />conservative value to insure that lifting equipment is <br />appropriate. <br />Tank <br />Weight <br />Wttk Wttk_dry Wtfactor 6840lbf  tank weight used in calculations <br />as contributing to the hold down <br />force and for the tank wall vol for <br />buoyancy calculationsID Tank IDtk 120in <br />Effective Tank Thickness Tshell 0.65 in thickness value is approximate and is only used to <br />estimate the tank outside cylinder dimension. <br />normally use 0.35 for SW, 0.65 for DW, 0.95 for TW <br />OD Tank Wall ODtk IDtk 2Tshell121.3 in  this is the approx OD of the tank <br />cylinder wall not counting the ribs <br />Tank Length Ltk 23 ft 8.5in285 in outside tank length end to end <br />including end caps <br />End Cap Plan View <br />Area <br />plan view area of one end capAreaec464.0in2 IDtk 48in=if <br />729.6in2 IDtk 72in=if <br />1932.9in2 IDtk 92in=if <br />5654.9in2 IDtk 120in=if <br />2438.4in2 IDtk 138in=if <br />0 otherwise <br /> <br />Areaec 5654.9 in <br />2 <br />Tank Buoyancy, Rotten Robbie No 69, <br />Manteca CA, dwg 17366-001, 10ft DWT <br />Date Printed: 9/7/2023 Page 7 of 46