Page 21 - Fair, Geyer, and Okun's Water and wastewater engineering : water supply and wastewater removal

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Contents xv
12.3.3 Determine Existing Conditions 406
12.3.4 Set Site-Specific Goals 406
12.3.5 Collect and Analyze Additional Data 407
12.3.6 Refine Site-Specific Goals 407
12.3.7 Assess and Rank Problems 407
12.3.8 Screen Best Management Practices 408
12.3.9 Select Best Management Practices 408
12.3.10 Implement Plan 408
12.4 Best Management Practices 409
12.4.1 Best Management Practice Overview 409
12.4.2 Best Management Practice Screening 409
12.5 Urban Runoff Control Practices 413
12.5.1 Regulatory Controls 413
12.5.2 Source Control Practices 416
12.5.3 Detention Facilities 416
12.5.4 Infiltration Facilities 422
12.5.5 Vegetative Practices 428
12.5.6 Filtration Practices 431
12.5.7 Water Quality Inlets 434
12.6 Combined Sewer Overflow (CSO) Control
Practices 436
12.6.1 Source Controls 436
12.6.2 Collection System Controls 436
12.6.3 Storage 437
12.6.4 Treatment 438
12.7 Selection of Best Management Practices 443
12.7.1 Alternatives Development 443
12.7.2 BMP Selection Process 444

13. Hydraulics of Sewer Systems 457
13.1 Nature of Flow 457
13.2 Flow in Filled Sewers 457
13.3 Limiting Velocities of Flow 462
13.3.1 Transporting Velocities 463
13.3.2 Damaging Velocities 465
13.4 Flow in Partially Filled Sewers 466
13.5 Flow in Sewer Transitions 469
13.6 Alternate Stages and Critical Depths 472
13.7 Length of Transitions 474
13.8 Hydraulic Jumps and Discontinuous Surge Fronts 477
13.9 Bends, Junctions, and Overfalls 479
13.10 Street Inlets 480
13.10.1 Gutter Sections on Grade 482
13.10.2 Grate Inlets on Grade 485
13.10.3 Curb Inlets on Grade 488
13.10.4 Combination Inlets on Grade 490
13.10.5 Inlets in Sag 491