Dry Well Size Calculator

How to calculate drywell size needed.

Dry well size calculator.

How to determine the correct size of a dry well. If you have slow percolating soil you re going to get a bigger dry well so that it acts as a reservoir when you collect the water and then it could take days for it to percolate into the subsoils. Harris precast supplies new york city and long island with dry wells detention systems manholes catch basins trench drains and other related storm water products. You have to factor in the percolation of the soil how well it percolates.

How to size a dry well. Scalable and flexible commercial solutions for office buildings banks grocery stores and more. Most places that would still require a permit since it s changing the surface water runoff pattern and i don t think the neighbor will like it. If the neighbor is 3 higher put a block wall along that side to dam it out.

If no soil permeability data is available assume a conservative value of 0 5 inches hr. Sizes and stats of our drain storm and solid rings. Volume weight and other important information based on diamater and height of our products. A dry well is a buried tank or a rock filled excavation used to capture storm drainage and drain storm water runoff to groundwater.

Depending on the average amount of storm water you need to control you can choose install a dry well that s as small as a couple feet in depth and diameter or as large as several feet wide and. Environmental protection agency in the code of federal regulations at 40. The dry well is essentially a box filled with gravel and you need to find the height length and width of the box to store the runoff. This is a means of stormwater management that works well for relatively small volumes of storm water runoff in a location where the groundwater table is low enough so that the bottom of the dry well can remain at least 2 feet above the groundwater table.