Houston French Drain Installation


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How do you install a French drain? Step 1: Dig a trench wider than your pipe at a gradient. Step 2: Lay a water-permeable landscape fabric in the trench. Step 3: Fill the bottom of the trench with aggregate. Step 4: Lay the perforated pipe. Step 5: Place more aggregate into the trench. Step 6: Cover the entire French drain with the remaining.


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Step 4: Lay the perforated drain pipe onto the aggregate. Lay the drainage pipe with the perforated holes down to ensure that the water will be able to exit the pipe once it is full. In the event that you decide to extend the French drain beyond its capacity, you will need to use strong and stable connectors and couplers in order to do so.


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Design of French Drains. In order for the french drain to perform adequately it must pass three main design criteria; The trench must be wide and long enough for the full volume of rainwater to enter the trench and percolate through to the pipe. The pipe must include enough percolations large enough to allow the volume of water to enter the pipe.


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First, dig a "French trench.". Whether installed in the yard or the basement, a French drain works on the same principle. First, a drainage trench is dug, sloping in the direction you want the.


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Bedding & Filter Materials. The french drain detail should consist of an excavated trench lined with a suitable geotextile french drain filter fabric. Then bedding material is installed in the bottom of the trench. The type and depth of bedding material depends on the structural design of the pipe as described in our French Drain Depth post.


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Here's a step-by-step guide to installing a French drain on your property. Determine the best location. Determining the best location depends on where the problem areas are located, nearby elevation, and the condition of the soil. Use the design tips above to help with siting to ensure proper slope, depth, and more.


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French Drain - Gravel Perforated Pipe - Holes Point Down. See examples of both holes up and holes down. Apple Drains Drainage Contractorswww.AppleDrains.comT.


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Place the drain with the drainage holes face down in the trench. Lay the pipe in the trench so the slotted holes face downward, as this allows the water to flow through the pipe into the draining site. Make sure you have enough pipe to fill the length of the trench. The pipe should sit snugly in the gravel.


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Step 3: Determine trench dimensions. Assuming a trench gradient of 1% and a depth of 60cm (0.6m) for our French drain, we will now calculate the trench width. We know the pipe diameter is 100mm (0.1m), and we want to leave at least 5cm (0.05m) of gravel on all sides. So, the trench width will be:


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Fill the bottom of the trench to around a third of the depth of the trench. 4. Add pipe. Now lay your perforated land drain pipe - 100mm pipe is a good option - on top of the recently laid aggregate. The perforations in the pipe need to be face down, so when the water rises it will seep into the pipe straight away.


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Plan Your French Drain - Generally a trench of about 200-300mm wide is suitable in most cases, but if you have a large amount of water to drain you may need a trench of up to 450mm wide. The trench should be about 300-500mm deep, and dug so that it slopes at a ratio of 1:50. That means that for every 2 meters of trench length, it should fall.


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Steps for Installing a French Drain. The steps include digging a trench whose bottom slopes, and that is long enough to lead to a discharge point. In the area where water is to be collected, the sides and bottom of the trench are lined with filter fabric to keep dirt from washing in and clogging the drain. Perforated pipe is laid in the bottom.


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The French drain diagram will change accordingly to help you visualize your selected French drain system. Enter your French drain depth, width, and length in our French drain calculator. The tool will then give you the volume of excavation you need for your French drain system.


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French Drains - How They Work. The drainage should be installed at a low point in the affected area to allow it to drain surface water away to storm drain, or a Soakaway. Water will always find its way to the lowest point in the landscape, so it is common sense that the area most affected is the place you should build your French drain.


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The next diagram shows what the drainage pipe layout would be for a COMPLETE drain installation . Notice that the locations of the drain lines have been shifted away from the trees to avoid the root areas. Also notice how all the pipe runs are straight and how connecting pipes intersect at either 90 or 45 degree angles.


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French Drains. PDF DOWNLOAD . DEFINITION. A french drain is a trench that has a land drain installed at the bottom of the trench and has been backfilled with shingle or similar coarse stone. Modern techniques include lining the sides of the drain with a geotextile filter membrane that will stop the transmission of fines within surrounding into.