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TOTAL SIDEROLL <br />HEADLOSS = _(Sideroll Length [SRL1) x (Headloss [181 x F* <br />with 5" Lateral (2.33.)x(100) <br />PRESSURE GAIN (or LOSS) DUE <br />TO FIELD SLOPE <br />NOTE: Look at most <br />restrictive conditions <br />in an entire field. <br />PRESSURE VARIATION: <br />(/;�90)x(o�., 7)x(0,3(0 ) _ psi [191 <br />2.31x100 <br />[Sl °s x [SRLI = _( y ) x (/-, <br />2.31 x 100 2.31 x 100 <br />psi [20] pressure <br />due to elevation change <br />Sideroll Headloss [191 + Elev. pressure Gain or Loss [201 <br />[DP] <br />(�-) <br />*PRESSURE VARIATION MUST NOT EXCEED + 10! of DP. If flow control <br />nozzles are used, then ± 10o prssure ^limit can be dealt 'with easily. <br />REQUIRED PRESSURE AT MAINLINE AT BEGINNING OF SIDEROLL [MPS1 <br />For Level Laterals <br />For Lateral Laid Downhill <br />For Laterals Laid Uphill <br />(not recommended) <br />[DP] + 0.75 [191 +1 <br />_ + 0.75 +1 <br />[DP] + 0.75 [19] - 0.5 [20] + 1 <br />+ 0.75 _�)_ - 0.5 " + 1 = <br />_ [DP] + 0.75 [191 + 0.5 [20] + 1 <br />+ 0.75 _[__ I + 0.5 _r1 + 1 = <br />