Hydraulic Design of Sewers and Culverts

        Strong, durable reinforced concrete pipe has a long history as an efficient hydraulic conduit. In this portion of the catalog, a common method of hydraulic design is presented to assist you in the selection of the proper size of Cretex concrete pipe for your project. Sample problems demonstrate the engineering principles involved and illustrate the use of the hydraulic charts and nomographs. The hydraulic charts and nomographs follow this text.

For specific design information, please click any of the following links.
    General Hydraulics
    Storm and Sanitary Sewer Design
    Culvert Design  

Hydraulic Design Figures
1 Full Flow Curves for Circular Pipe, n = 0.010
2 Full Flow Curves for Circular Pipe, n = 0.012
3 Full Flow Curves for Circular Pipe, n = 0.013
4 Full Flow Curves for Arch Pipe, n = 0.012
5 Full Flow Curves for Elliptical Pipe, n = 0.012
6 Full Flow Curves for Box Sections, n = 0.012
7 Relative Velocity and Flow for Circular, Arch, and Horizontal Elliptical Pipe
8 Relative Velocity and Flow for Box Sections
9 Relative Velocity and Flow for Box Sections
10 Hydraulic Properties for Circular Pipe
11 Hydraulic Properties for Arch Pipe
12 Hydraulic Properties for Elliptical Pipe
13 Hydraulic Properties for Box Sections
14 Slopes Required to Maintain Minimum Velocities
15 Roughness Coefficient
16 Culvert Capacity for Circular Concrete Pipe, 18"-66"
17 Culvert Capacity for Circular Concrete Pipe, 60"-180"
18 Culvert Capacity for Circular Corrugated Metal Pipe, 36"-72"
19 Culvert Capacity for Horizontal Elliptical Concrete Pipe, 18"-72" Equiv.
20 Culvert Capacity for Horizontal Elliptical Concrete Pipe, 72"-120" Equiv.
21 Culvert Capacity for Concrete Box Sections, 6'x3' - 12'x5'
22 Culvert Capacity for Concrete Box Sections, 8'x4' - 12'x12'
23 Culvert Nomograph for Circular Concrete Pipe Culverts with Inlet Control
24 Culvert Nomograph for Horizontal Elliptical Concrete Pipe Culverts with Inlet Control
25 Culvert Nomograph for Concrete Box Culverts with Inlet Control
26 Culvert Nomograph for Circular Concrete Pipe Culverts with Outlet Control
27 Culvert Nomograph for Horizontal Elliptical Concrete Pipe Culverts with Outlet Control
28 Culvert Nomograph for Concrete Box Culverts with Outlet Control
29 Critical Depth Charts for Circular, Arch, and Horizontal Elliptical Pipe
30 Critical Depth Chart for Box Sections