Storm sewer system is to be provided to drain storm water to protect urban areas from flooding after episodes of rainfall. Storm sewer layout along with the contributing areas drained in specific sewer lines is shown in Figure A2= 26 ha SS1 SS2 SS3 SS4 SS5 C2=0.56 A2=16 ha C2=0.75 A6=26 ha C6=0.65 MH1 MH3 MH5 MH6 MH2 MH4 Main Sewer 56 51 51 66 61 Length of Sewer (m) A1=11 ha C1=0.60 A3=26 ha C3=0.70 A5=31 ha C5=0.70 MH1 MH1 MH2 MH3 MH4 MHS MH2 MH3 MH4 MH5 MH6 GE=142 m MH2 MH3 MH4 MH5 MH6 GE=140.9 m Design the storm sewer system for "gravity flow" using the data given in Table Q1 assuming that the entry time to the pipe is the same for all sections and is equal to 6 min. All pipes are circular and made of concrete. All areas are in hectares. Sewer Name Head of run End of run GE=140 m GE=139.1 m GE=138.2 m GE=137.0 m

A town with a sewer population of 4,000 has a daily wastewater flow, including industrial wastewaters of 1,600 m³ and an average BOD of 280 mg per liter. The industrial discharges to the municipal sewers are 60 m³ at 1,800 mg per liter BOD from a meat processing plant and 100 m³ at 400 mg per liter BOD from a soap canning plant. Determine the contribution of domestic flow in liters per person and the BOD in grams per person based on the town's wastewater, excluding the industrial wastewater.

Subject water system design

Determine the theoretical diameter of a single 1-mi-long pipeline from A to C that would be equivalent to the pipe system shown in Figure 7-31 A. 0.5 mile 16 in. B 0.8 mile 12 in. 0.7 mile 8 in. C