To calculate the slope of a French drain:
\[ S = \left( \frac{D}{L \times 12} \right) \times 100 \]
Where:
A French drain slope is the gradient or incline of the drain that allows water to flow away from a specific area. The slope is critical to the functionality of a French drain system, as it ensures that water is directed away from the foundation of a building or a particular area of a yard. A proper slope prevents water from stagnating and helps to protect structures and landscapes from water damage.
Let's assume the following values:
Using the formula:
\[ S = \left( \frac{6}{10 \times 12} \right) \times 100 = \left( \frac{6}{120} \right) \times 100 = 5\% \]
The French Drain Slope is 5%.
Let's assume the following values:
Using the formula:
\[ S = \left( \frac{12}{20 \times 12} \right) \times 100 = \left( \frac{12}{240} \right) \times 100 = 5\% \]
The French Drain Slope is 5%.
