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Dry Well Storage Volume Equation:
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Dry well storage volume refers to the capacity of a dry well to store stormwater or other runoff. It is calculated based on the physical dimensions of the well and the porosity of the surrounding soil or fill material.
The calculator uses the dry well storage volume equation:
Where:
Explanation: The equation calculates the effective storage capacity by accounting for the void spaces in the porous material that can hold water.
Details: Accurate dry well volume calculations are essential for proper stormwater management, preventing flooding, and ensuring adequate infiltration capacity for sustainable drainage systems.
Tips: Enter area in square meters, depth in meters, and porosity as a decimal between 0 and 1. All values must be positive numbers with porosity not exceeding 1.
Q1: What is a typical porosity value for dry well materials?
A: Porosity values typically range from 0.2 to 0.4 for gravel and crushed stone commonly used in dry wells.
Q2: How does dry well storage differ from tank storage?
A: Dry well storage utilizes porous media with void spaces, while tank storage uses empty containers. Dry wells allow for gradual infiltration into the surrounding soil.
Q3: What factors affect dry well performance?
A: Soil permeability, well design, maintenance, and the porosity and gradation of the fill material all impact dry well performance.
Q4: How often should dry wells be maintained?
A: Dry wells should be inspected annually and cleaned as needed to prevent clogging and maintain infiltration capacity.
Q5: Can this calculator be used for different well shapes?
A: This calculator assumes a uniform cross-sectional area. For irregular shapes, more complex calculations or specialized software may be needed.