Rainwater 排水 與 roof gutter 選型
Roof 排水 計算, gutter 選型, downpipe 選型 與 rainfall intensity 數据.
rainwaterdrainagesizing計算器
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 |