Calculate The Seepage Loss Per Meter Length Of Sheet Pile

Calculating seepage loss per meter length of sheet pile is crucial in geotechnical engineering to assess the stability and performance of retaining structures. This calculator helps you determine the amount of water that may seep through the soil behind a sheet pile wall, aiding in the design and maintenance of these structures.

1. Enter the length of the sheet pile, soil permeability, hydraulic head, and pile diameter.
2. Click the “Calculate” button.
3. View the results and chart below the calculator.

The formula used to calculate seepage loss is:

Q = k * i * A

where:

• Q is the seepage loss (m³/s),
• k is the soil permeability (m/s),
• i is the hydraulic gradient (dimensionless), and
• A is the cross-sectional area of the sheet pile (m²).

Comparison of Soil Permeability Values

Soil Type	Permeability (cm/s)
Clay	10^-7 to 10^-9
Silt	10^-5 to 10^-7
Sand	10^-3 to 10^-5

Hydraulic Head Values in Different Scenarios

Scenario	Hydraulic Head (m)
Normal rainfall	0.5 to 1
Heavy rainfall	1 to 2
Flooding	2 or more

• Always consider the soil type and its permeability when designing sheet pile walls.
• Regularly monitor and maintain sheet pile walls to prevent excessive seepage.
• Consult with a geotechnical engineer for complex projects or uncertain soil conditions.

What is hydraulic head?

Hydraulic head is the height of a column of water that would produce the same pressure as the water in a given location.

How does soil permeability affect seepage loss?

Soil permeability is a measure of how easily water can flow through the soil. Higher permeability means more water can seep through, increasing seepage loss.

For more information, see the following authoritative sources:

• US Army Corps of Engineers – Engineering Circular 1110-2-2800
• FHWA Geotechnical Engineering Circular No. 3