online_culvert:   Hydraulic design of highway culverts by FHWA method


Reference



SAMPLE INPUT:

[HW/D table]       [Main page]       [Description]


SAMPLE INPUT:

Units: U.S. Customary

Type of culvert: A. Square edge with headwall

The design discharge Q:   200   [cfs]

The inlet invert elevation z1:   100   [ft]

Manning's n:   0.013

The natural streambed slope So:   0.01

The tailwater depth above the outlet invert y2:   3.5   [ft]

The culvert length L:   200   [ft]

The roadway shoulder elevation Es:   110   [ft]

Freeboard Fb:   2   [ft]

Entrance loss coefficient Ke:   0.5  

Exit loss coefficient KE:   1.0  


SAMPLE OUTPUT:

Culvert diameter D:   5 ft

Critical depth yc:   4.037 ft

Normal depth yn:   3.284 ft


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