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4.3 Hydraulic Calculations <br /> 4.3.1 Interconnect Capacity <br /> The discharge capacity for pressure flow conditions was calculated using the following <br /> equation: <br /> Q A 2gh <br /> = L <br /> 1 + Ke + fl <br /> Where: <br /> Q= discharge in cubic feet per second <br /> A = flow area in square feet <br /> g = acceleration due to gravity in square feet per second <br /> 1 = standard value for exit loss coefficient <br /> KQ = entrance loss coefficient <br /> f=Darcy-Weisbach friction factor <br /> L = length of pipe in the direction flow in feet <br /> R = hydraulic radius in feet <br /> 4.3.1.1 Friction Losses <br /> The Darcy friction factor (fl for the interconnects was calculated using the Swamee-Jain <br /> Equation: <br /> _ 0.25 <br /> f £ ))2 <br /> 5.74 <br /> login + R 0.9 <br /> e <br /> Where: <br /> f = Darcy-Weisbach friction factor <br /> = specific roughness in feet <br /> D =pipe diameter in feet <br /> Re = Reynolds number <br /> Generally, longer pipe lengths, smaller pipe diameters, and faster flow velocities translate to <br /> increased friction losses. Conversely, larger pipe diameters, slower flow velocities, and <br /> lower friction factors translate to decreased friction losses. The specific roughness was <br /> Hydrology and Hydraulics 1 13 <br /> GE1 <br />