Circular Concrete Pipe Culvert Hydraulic Design Calculator

Culvert Hydraulic Design Calculator

MKS System | Circular Concrete Pipe | Inlet & Outlet Control Analysis

Based on FHWA HDS-5 & IRC:SP:13 Guidelines

Input Parameters

Stream Width

m

Design Flow (25-yr)

m³/s

Design Flow (50-yr)

m³/s

Culvert Length

m

Barrel Slope

m/m

Manning's n

Entrance Type Groove-end Projecting (kₑ=0.2) Square Edge Headwall (kₑ=0.5) Mitered (kₑ=0.7) Thin-edge Projecting (kₑ=0.9)

Allowable Headwater

m

Tailwater Depth (25-yr)

m

Tailwater Depth (50-yr)

m

Inlet Invert Level

m

Road Top Level (RTL)

m

Pipe Diameter

m

Wing Wall Angle

°

Culvert Design Calculator v1.0 | Based on Hydraulic Engineering Standards

Always verify results with professional engineering judgment and site-specific conditions