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Rainwater drainage と roof gutter 選定

Roof drainage 計算, gutter 選定, downpipe 選定 と rainfall intensity data.

rainwaterdrainagesizing計算機

Overview

Engineering reference data for Rainwater Drainage and Roof Gutter Sizing in sanitary drainage.

Key Formulas

Manning's Equation

Q=1nARh2/3S1/2Q = \frac{1}{n} A R_h^{2/3} S^{1/2}

Open channel flow.

Slope

S=ΔhLS = \frac{\Delta h}{L}

Hydraulic gradient.

Variables

SymbolDescriptionUnit
QQFlow ratem³/s
nnManning roughness
AAFlow area
RhR_hHydraulic radiusm

References