Drain Slope Calculator
Calculate the total drop for a drain pipe based on length and slope percentage, with a suitability recommendation.
How to Use the Drain Slope Calculator
- Enter the pipe length in metres.
- Enter the slope percentage (default 2%).
- Click Calculate for total drop and recommendation.
Casos de Uso
- •Residential drain pipe installation.
- •Sewer connection grade checking.
- •Retrofit drainage planning.
- •Plumbing code compliance.
Fórmula
Drop (cm) = pipe length (m) × slope (%). Recommended slope: 1–4%.
Perguntas Frequentes
What is the minimum drain slope?
Most codes require a minimum slope of 1% (1 cm per metre) for drain pipes.
Can slope be too steep?
Yes — slopes above 4% can cause liquid to outrun solids, leading to blockages.
What is the standard slope?
2% (1 in 50) is the standard recommended slope for most residential drain pipes.