Page 566 - Fair, Geyer, and Okun's Water and wastewater engineering : water supply and wastewater removal

JWCL344_ch14_500-554.qxd 8/7/10 8:56 PM Page 523

Population Total (15) 1,080 1,593 2,093 3,206 Average (32) 9.50 10.08 10.33 11.63

Per Acre (14) 27.0 23.8 24.1 22.9 Cut Lower Upper End End (31) (30) 11.50 7.50 8.50 11.67 12.00 8.67 11.00 12.25

Total Tributary Area Domestic Acres (13) 40 67 87 140 Invert Elevation Lower End (29) 113.20 104.21 95.58 90.05

Commercial Acres (12) 4 11 12 22 Upper End (28) 120.00 113.03 104.04 95.33

Industrial Acres (11) 5 8 16 16 Design Profiel Depth Length, flow, of ft in. (27) (26) 850 6.37 1,260 8.1 1,880 9.7 1,760 12.0

Population Total (10) 1,080 513 500 1,113 Velocity, ft/s Actual (25) 2.72 3.02 2.84 2.72 28.3 L/s.

Per Acre (9) 27 19 25 21 Full (24) 2.35 2.22 2.45 2.35

Illustrative Computations for the System of Sanitary Sewers for Example 14.2
Domestic Acres (8) 40 27 20 53 Capacity, ft 3 /s (23) 0.82 1.42 2.23 3.35 0.4046 ha; 1 ft 3 /s

Adjacent Area Commercial Acres (7) 4 7 1 10 Slopes, Size, % in. (22) (21) 0.8 8 0.7 10 0.45 12 0.3 15 Sections of sewers rather than individual runs between manholes are shown in order to include major changes in required capacity and consequent size. 43.8 L/s; 1 acre

Total (20) 0.795 1.413 1.931 2.832
Industrial Acres (6) 5 3 8 — Infiltration (19) 25.4 mm; 1 MGD

Total Acres To (5) (4) 49 C St. 37 E St. 29 H St. 63 K St. Maximum Volume of Sewage, ft 3 /s Domestic (18) .044 .440 .086 .650 .115 .852 .178 1.300

Location of Sewer Stations or Limits From (3) B Ave. C St. G St. J St. Commercial (17) .155 .429 .468 .858 0.3048 m/s; 1 in.

Street (2) A Ave. D Ave. F St. I St. Industrial (16) .156 .248 .496 .496 Conversion factors: 1 ft/s

Table 14.3 Section (1) a b c d Section (1) a b c d Note:

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