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A drainage slope calculator determines the required grade for surface drainage and French drain systems. The minimum slope for surface drainage is 1–2% (1–2 inches per 10 feet); French drains require at least 1% slope (1/8 inch per foot). Inadequate slope causes standing water and foundation problems.

Guida passo passo

  1. 1Input base values
  2. 2System computes results

Esempi risolti

Ingresso
Enter the required values
Risultato
Result computed by the formula

Errori comuni da evitare

  • Precision loss
  • Ignoring variables

Domande frequenti

What does this calculator do?

Input base values

How do I use this calculator?

System computes results

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Impostazioni

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