WMS:Curb and Gutter Flow Analysis
The Hydraulic Toolbox's Curb and Gutter Analysis calculator that uses the FHWA HEC-22 equations, is built into WMS and can be used to examine flow across storm drain inlets for a variety of curb and gutter openings. The dialog is reached through the Calculators | Curb & Gutters command in the Hydrologic Modeling module.
The dialog has three main parts as described below.
The Gutter section has values for defining the gutter dimensions. Values include:
- Longitudinal Slope of Road
- Cross=slope of Pavement
- Define Cross-slope of Gutter
- Manning's Roughness
- Gutter Width
- Design Flow
- Width of Spread
- 'Compute Unknown
The final values show the results of the computation.
- Gutter Depression
- Area of Flow
- Eo (Gutter Flow to Total Flow)
- Depth of Curb
The Inlet section allows entering parameters for the inlet.
- Inlet Location
- Percent Clogging
- Inlet Types
- Grate Types
- Grate Width
- Grate Length
- Length of Inlet
- Curb Opening Height
- Local Depression
The parameters table will display the inlet data after the Compute Inlet Data button has been clicked.
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