Culvert Preliminary Design

Calculate peak discharge, linear waterway, scour depth, and structural sizing for cross-drainage per IRC SP 13.

Hydrology & Site

Catchment Area A (ha)

Runoff Coeff C

Rainfall Intensity i (mm/hr)

Road Top Level (m)

Design Fill Depth (m)

HFL (m)

Tailwater Level (m)

Silt Factor Ksf

Allow Multi-Cell Split

Enter the hydrological catchment data, road levels, and silt factor to determine the appropriate cross-drainage structure and scour depths.