learn.howToCalculate
learn.whatIsHeading
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.
Steg-för-steg-guide
- 1Input base values
- 2System computes results
Lösta exempel
Ingång
Enter the required values
Resultat
Result computed by the formula
Vanliga misstag att undvika
- ✕Precision loss
- ✕Ignoring variables
Vanliga frågor
What does this calculator do?
Input base values
How do I use this calculator?
System computes results
Redo att beräkna? Prova den kostnadsfria Drainage-kalkylatorn
Prova själv →