The French Drain (aka Weeping Tile) Explained
To overcome that problem, the fan may be mounted on the basement floor and ducted to the living area. Then, you need to make sure that you do have a free area to build the drain. Drainage Gravel – the washed drainage gravel bags should be chosen according to the drain size you need. Choose the right size for your drain and keep in mind that most walk-behind trenchers have a size adequate for a 4-6 inches wide trench. Perforated Plastic Drain – Choose the right diameter, which depends on how big your drainage problem and the trench are. It’s something you can do yourself, but it would be better to know for sure the right dimensions and placement. As water runs downhill toward the wall, it can put an immense amount of pressure on a retaining wall. Maintains that part of the house which is in contact with the soil at a pressure higher than that of the air in the soil. They will be happy to provide you with the name, address, and telephone number for your appropriate state contact.
If you would like further information or explanation about any of the points mentioned in this booklet, you should contact your state radon program listed at the end of this booklet. If you don’t, then you might end up damaging them if you start digging in the wrong spot. One end of the trench will head in the direction of the spot where you’ve determined the water will be re-routed (if it doesn’t quite reach that spot, you’ll have to dig a connecting ditch down to it). So regular rodding ‘eyes’ should be included in the run, and a small access chamber should be included where there is a change of direction. If there is no natural slope around, you can even create one. Other things you must take into account: the source of the water you will be draining, the greatest amount of flow you can expect to get, and if it is a hazardous or contaminated source. When digging, you will also need to allow for proper pipe sloping toward the drainage circuit. Typical below-floor drain systems use PVC pipe sections and make for a difficult installation. One is heavy rainfall and the other is excessive water use.
Use an online gravel calculator to get a rough estimate based on the depth and width of the planned trench. They help you estimate how much gravel you need, depending on the depth and width of your future trench. Refill the top of the trench with dirt and finish the surface as you wish. I plan to install a surface drain at the top of this trench and, therefore, will not fill in the top of the trench just yet. Operating costs will include the electricity to run the fan (about $30 to $40 per year) and the heating penalty resulting from increased infiltration upstairs caused by the fan (as much as $400 to $500 per year). Keep in mind that the drainage route should run minimum 1 meter away from any fence or wall. If you want your home to stay dry and without any mold (and you probably do) then you must ensure you are getting a good drainage.
The foundations of your homes should always remain dry so that it can properly handle the pressures of everyone using the living space. Begin digging the trench by cutting a straight line through the sod, 3 inches (or as desired) to one side of the line, using a square garden spade. Then add a couple of stakes, some string, as well as a string level in order to set the incline of the trench. It should be found away from the buildings and set into sandy soil so that the water can go easily through it. As you dig the trench, you can do it deeper and deeper along the way. With no one entering the trench, this works most times. This prevents soil gas-including radon-from entering the home. Fold over the layer of weed fabric to prevent soil making its way into the drain and then finish off the French drain. Inserted into this trench is a metal U-shaped channel which is then connected to pipes that run water out to underground or street level drains, or potentially to a landscaped pond.