Road & Infrastructure Drainage
Roadway drainage, culvert sizing, channel design, and infrastructure-scale systems.
6 calculators recommended for this problem
Recommended Calculators
These tools are most useful for solving "road & infrastructure drainage" problems.
Manning's Equation for Pipe Flow Calculator
Enter circular pipe diameter, slope, roughness, and flow depth to calculate full- or partial-flow discharge, velocity, and hydraulic properties with Manning's equation.
Manning's Channel Calculator
Enter channel geometry, slope, roughness, and depth to calculate discharge and velocity with Manning's equation for rectangular, trapezoidal, triangular, or parabolic sections.
Culvert Outlet Control Calculator
Calculate outlet control hydraulics for culverts including headwater depth, outlet velocity, critical depth, normal depth, and head loss breakdown. Uses FHWA HDS-5 methodology for circular and box culverts.
Inlet Interception Calculator
Enter gutter flow and grate, curb-opening, or combination-inlet geometry to calculate HEC-22 interception efficiency, captured flow, and bypass flow.
Gutter Flow Calculator
Enter gutter shape, dimensions, slope, and roughness to calculate flow capacity, velocity, hydraulic radius, and Froude number with Manning's equation.
Outlet Protection Calculator
Design riprap aprons and outlet protection structures for culverts using FHWA HEC-14 methodology. Calculate D50 stone size, blanket thickness, and apron dimensions.
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