Rainwater Drainage and Roof Gutter Sizing
Roof drainage calculation, gutter sizing, downpipe sizing and rainfall intensity data.
rainwaterdrainagesizingCalculator
Overview
Engineering reference data for Rainwater Drainage and Roof Gutter Sizing in sanitary drainage.
Key Formulas
Manning's Equation
Open channel flow.
Slope
Hydraulic gradient.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Flow rate | m³/s | |
| Manning roughness | — | |
| Flow area | m² | |
| Hydraulic radius | m |