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SAMPLE CALCULATIONS (CONT.)SECTION 13, NO R.B.B. <br />Demonstrating methodology used to calculate results shown in summary tables. <br />MR = -465 ft-lb Resisting moment due to weight of pool wall. <br />(wall loaded by earth pressure) <br />MT = OTMsoil + MR =-465 ft-lb SEE POOL WALL SUMMARY <br />= 0.018 <br />= 0.471 <br />= 0.843 <br />= -13325.3 psi < 20000 psi OK <br />= -1042.0 psi < 1125 psi OK <br />= 0.0 psi < 55.0 psi OK <br />= -2856 ft-lb Overturning moment due to water pressure <br />=-1318 lb Shear due to water pressure <br />MR =-90 ft-lb Resisting moment due to weight of pool wall. <br />ρ = sA <br />bd <br />ρ ρ ρ+ −2k = ( ) 2n n n <br />−j = 1 3 <br />k <br />1 <br />fs = T <br />s <br />M <br />A j d <br />2 <br />1 <br />2fc = TM <br />j k bd <br />1 <br /> = TV <br />bdυ <br />3 <br />water <br />1OTM = 6 w wHγ <br />2 <br />T water <br />1V = V = 2 w wHγ <br />ρ = sA <br />bd <br />ρ ρ ρ+ −2k = ( ) 2n n n <br />−j = 1 3 <br />k <br />2 <br />fs = T <br />s <br />M <br />A j d <br />2 <br />2 <br />2fc = TM <br />j k bd <br />2 <br /> = TV <br />bdυ <br />MR -90 ft-lb Resisting moment due to weight of pool wall. <br />(wall loaded by water pressure) <br />MT = OTMwater + MR =-2946 ft-lb SEE POOL WALL SUMMARY <br />= 0.004 <br />= 0.251 <br />= 0.916 <br />= 15521.4 psi < 20000 psi OK <br />= 456.1 psi < 1125 psi OK <br />= 14.6 psi < 55.0 psi OK <br />ρ = sA <br />bd <br />ρ ρ ρ+ −2k = ( ) 2n n n <br />−j = 1 3 <br />k <br />1 <br />fs = T <br />s <br />M <br />A j d <br />2 <br />1 <br />2fc = TM <br />j k bd <br />1 <br /> = TV <br />bdυ <br />3 <br />water <br />1OTM = 6 w wHγ <br />2 <br />T water <br />1V = V = 2 w wHγ <br />ρ = sA <br />bd <br />ρ ρ ρ+ −2k = ( ) 2n n n <br />−j = 1 3 <br />k <br />2 <br />fs = T <br />s <br />M <br />A j d <br />2 <br />2 <br />2fc = TM <br />j k bd <br />2 <br /> = TV <br />bdυ <br />W:\Details\Release\Calcs 2019\660 [19v1].pdf 07/28/2020 03:38:34 PM © Pool Engineering, Inc. 2020, Page 7 of 18