SWMM 5 Inlet Control Culvert Equations
Subject: SWMM 5 Inlet Control Culvert Equations The newer option for SWMM 5 culverts uses three culvert classifications and associated equations to compute the inlet controlled flow into a culvert using the FHWA (1985) equations . The culvert code in the culvert .c code of SWMM 5 uses: 1. Two Equations for Unsubmerged culvert flow, 2. One Equation for the Transition flow, and 3. One Equation for Submerged flow.