In order for the drain to work effectively, it needs to be dug in a way that allows any water that gets into the drain to flow downhill, towards the lowest point and then have a place to escape – away from the building. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Due to the skills required, do-it-yourself efforts are recommended only for homeowners with these special skills. This booklet is intended primarily for homeowners who already have had their homes tested for radon and have decided that they need to take some action to reduce radon levels. This booklet does not attempt to give the homeowners detailed instructions for corrective action. The booklet describes methods that have been tested successfully-by EPA and/or other research groups-on houses with high indoor radon levels. In my research I found it impractical to depend much on drawing down the water table, by installing a low placed subdrain to hope the water will run to it. And if I put down weed fabric over it to keep out dirt would I put it directly on top of the pipe or up higher?
Keep in mind though that about that much again is buried beneath the clay. We excavated and hauled away what seemed like a million wheel barrows of clay. Cob buildings don’t like to have wet boots. If you would like further information or explanation on any of the points mentioned in this booklet, you should contact your state radiation protection office. Additional information will be published as it becomes available. Washed drainage gravel: the number of bags will depend on the size of your drain. If an HRV is intended to serve as a stand-alone measure to achieve 4pCi/L in a house of typical size and infiltration rate, the initial radon in the house could be no greater than 10 to 15 pCi/L. The information presented here is concerned primarily with radon which enters a house from the underlying soil. The U. S. Environmental Protection Agency strives to provide accurate, complete, and useful information. If you are uncertain of the meaning of such test results, or if you need general information about radon in houses, read the EPA booklet, A Citizen’s Guide to Radon: What It Is And What To Do About It (OPA-86-004).
Once you have the design detail finalized it is time to mark the area you are going to dig up. Then came time to draw out the stem wall/foundation/wall line with flour! From the bottom up it would become 1) drain 2) recycled concrete stem wall 3) cob wall. This makes sure that the cob stays lovely and dry. You can also use stones (mortared or dry stacked) for the stem wall which looks absolutely incredible. At the exit point, the water can be collected in a large swale or a dry well, or it can simply flow into a suitable drainage area or into a rain garden. I can most definitely say that urbanite stem walls are a character building experience! The stem wall took us ages to do (nearly as long as the rest of the project – roof and cob walls included!) and it was painful work.
The drain quickly takes water away from the building, the concrete provides a durable base for the cob and the cob creates the beautiful wall. You put hunks of concrete on top of each other – right? It’s a simple process, especially if you prepare and plan it ahead and get the right materials and tools beforehand. To get a copy, contact your state radon program office (see list at the end of this booklet). Every day we worked on it saw another bloody finger added to the list. The septic system acquires excessive water from the runoff and from the water used by your household every day. Surface water can cause all sorts of problems for a property. Some cities control what you can dig or build on your own property. Some French drains might discharge into a local storm sewer, and others might just discharge at a different location on the property. You obviously want to direct the water to a location that is away from whatever you are trying to protect from groundwater, but there could be various laws and building codes that may prevent you from placing the discharge in certain locations.