Identify and Prepare the Drain Exit Point — Connect to Discharge Point

Beginner3 mins

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French Drain Installation · Step 9 of 10

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The first critical step for any French drain is to establish a suitable exit point. In this case, the crew identifies an existing storm sewer inlet near the street. A worker climbs into the storm sewer to inspect and confirm the presence of an existing drain pipe that can be utilized. They find a pipe already connected to the storm sewer, which they will tap into. The pipe identified has a small amount of water dripping from it, confirming its function.

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FAQs

What are the most essential tools I'll need for this French drain project, and are there any specialized tools I should consider renting?

You'll definitely need a sturdy digging shovel, measuring tape, and a wheelbarrow for moving excavated soil and gravel. For long trenches or difficult soil, renting a trenching machine can significantly reduce the physical effort and time required, making the project much more manageable.

What safety precautions should I take before I start digging, especially regarding underground utilities?

Always call 811 (or your local equivalent) a few days before you plan to dig to have underground utility lines marked; this is crucial for your safety and to avoid costly damage. Wear appropriate personal protective equipment, including heavy-duty gloves, eye protection, and steel-toed boots, and be aware of potential tripping hazards in the work area.

How much time should I realistically budget for installing a French drain, and is it truly a beginner-friendly project?

The estimated time for a French drain installation is around 3 days, but this can vary greatly depending on the length of the drain, the soil type, and whether you're hand-digging or using machinery. While the steps are straightforward for a beginner, the project is physically demanding due to the excavation and material handling, so plan for adequate breaks.

What are the most common mistakes people make when installing a French drain, and how can I avoid them?

A common mistake is not ensuring a consistent downhill slope (typically 1-2% grade) in the trench, which is essential for proper water flow; use string lines and a line level to guide your excavation. Another error is failing to properly wrap the perforated pipe and gravel with landscape fabric, leading to premature clogging from silt and soil.

Transcript

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all right every French train must have an exit point and you're gonna see where we're gonna exit ours this is kind of unique all right so here's our the drain tiles coming out of from the backyard through this PVC you kind of see it dripping so that it's doing what it's supposed to do we'll see how just coming through there once we tie the rest of the drain tile in there I always get stuck in tiny spots man so this French drain job is going to be a bit different than what I would air quote a standard French drain now a standard French drain is really designed to collect your surface water move it along underground and daylight it out to wherever you can get it to go well we're going to be doing is what I call a modified or hybrid French drain and what we're trying to do with this system is capture the ground water because the groundwater table is so high in this area it's automatically flooding the house if we can dry and capture that water up underground before it has a chance to raise we're gonna hopefully be able to keep these guys's backyard drier and their basement from flooding out so this everything that we're going to be doing today is a standard French drain except deeper at the exit point in the field we get back to the right elevation but we'll show you what we mean in a moment now the first thing that you've got to do with the French drain is daylight it you got to have some place

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