7-1. The pipe system of Fig. 7-9 is modified as a result of the analysis presented in the text. All 305-mm (12-in) lines are increased to 355 mm (14 in), the 355-mm (14-in) lines are increased to 405 mm (16 in), and the 405-mm (16-in) line is increased to 450 mm (18 in). Determine the flow in each line, the velocity in each line, and the pressure at point G assuming points A and G are at the same elevation and the pressure at A is 500 kPa (75 lb/in2). Is the system now satisfactory?

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2.2 m3/min 305 mm A Inflow 1000 m 25 m/min 2.5+ m3/min 250 mm 0.5 m3/min 1100 m B 200 mm C БО0 m E I 2.0 200 mm E Б00 m II 1.5 m3 /min 305 mm 1100 m G 2.3 m3/min 14 m3/min FIGURE 7-9 Simplified distribution system. 305 mm 305 mm 1250 m w 0001 355 mm ww 99E m 400 m 1250 m 600m 200 mm w 00 2.2 m3/min 305 mm A Inflow 1000 m 25 m/min 2.5+ m3/min 250 mm 0.5 m3/min 1100 m B 200 mm C БО0 m E I 2.0 200 mm E Б00 m II 1.5 m3 /min 305 mm 1100 m G 2.3 m3/min 14 m3/min FIGURE 7-9 Simplified distribution system. 305 mm 305 mm 1250 m w 0001 355 mm ww 99E m 400 m 1250 m 600m 200 mm w 00