Geometric Calculations for Circular Partially Filled Culverts

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Circular Culvert Geometry

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You may enter numbers in any units, so long as you are consistent.  (L) means that the variable has units of length (e.g. meters).  (L2) means that the variable has units of length squared (e.g. m2).
Top width, T, is the top width of the water in the pipe.  T=0 if the pipe is empty or full.

Equations:

Culvert Geometry Equations

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