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<br />i <br /> <br />aa = downstream section velocity head coefficient <br />a u = upstream section velocity head coefficient <br />a = area of downstream cross section <br />a = area of upstream cross section <br /> <br />For reach 1 to 2: [1.6081 - 1.6324 * (635.3/617.5) 2 ] <br />= -.1197 so k = 0.5 <br /> <br />For reach 2 to 3: [1.5370 - 1.6081 * (610.3/635.3) 2 ] <br />= .0529 so k = 0.0 <br /> <br />5.5.2.4 Compute the discharge for the entire reach (Sections 1-2-3 <br />inclusive) using Equation (2). <br /> <br />5.5.2.4.1 Assemble variables. Note that the entire process lends it self <br />to spreadsheet computations with commercial software such as Lotus 1-2-3 or Smart <br />II. <br /> <br />K, = 44,756 <br /> <br />a 1 = 617.46 a, = 1.6324 L '-2 = 252 <br /> <br />K2 = 57,133 <br /> <br />a2.= 635.3 O2 = 1.6081 L2_3 = 193 <br /> <br />K 3 = 42,223 <br /> <br />a3 = 610.31 a3 = 1.5370 g = 32.2ft1sec <br /> <br />k 1-2= 0.5 <br /> <br />k 2-3 = 0.0 <br /> <br />Clh = 0.5 + 0.4 = 0.9 <br /> <br />1-12 <br />