PART D - DITCH SHAPES OR SECTIONS
Channels or ditches are classified by their shapes. The five basic types are-
Symmetrical triangular or V
Nonsymmetrical triangular or V
Symmetrical trapezoidal
Nonsymmetrical trapezoidal
Segmental
Table 4-2 shows the commonly used shapes with corresponding data to use with Manning's Equation. Any of
these shapes may be used as side interceptor and diversion ditches. The primary consideration in the selection of
a cross-section is its capacity to meet hydraulic requirements and the availability of equipment and use.
Table 4-2. Ditch sections
4-7
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