Do you need gravel around solid drain pipe?

In this system, the pipe is solid, and not perforated, so there’s no need to provide gravel for drainage along the length of the drainpipe. One advantage of a smooth-wall pipe is that it will drain water quickly, and if it gets clogged, you can use a drain snake to clean it out.

Does drain pipe with sock need gravel?

Quote from the video:
Quote from Youtube video: You don't need a pipe with a sock or sleeve on it what happens when you go with a pipe that has a sleeve or sock on it.

How much gravel goes under a sewer pipe?

about 3 inches

Pour and compact about 3 inches of gravel or landscaping stone along the bottom of the trench. This will act as bedding for the drainage piping.

Do you put gravel under French drain?

The old way of installing French drains is to do it without the gravel and the fabric. Without the gravel and the fabric, however, the drain can clog up with sand and soil over time.

What do you put around underground pipes?

Use sand around buried sewer or water pipes: Sand is bedded beneath and around buried plumbing lines to avoid damage. This article describes the use of sand around a sewer pipe during backfill when a sewer pipe or “drain line” is replaced.

How deep should drain pipe be buried?

Maintaining a depth of 12 to 18 inches is best for drain pipes, but the depth of the pipe may vary in order to maintain a downward slope, which is critical for proper drain functioning.

What size gravel is best for drainage?

½ inch to 1-inch gravel

In general, you want to aim for ½ inch to 1-inch gravel for drainage. Areas that will see especially heavy flow may need larger gravel. Or, projects without drainage pipes may also need larger gravel. For example, a French drain without perforated pipe needs 1 ½ inch gravel.

What size gravel is best for French drain?


Use Natural 1-1/2″ round rock for best drainage. Washed rock is ideal. Avoid small pea gravel as the spaces in between stone is smaller minimizing flow rates. Avoid Crushed Rock (minus) that compacts and has “fines” that will clog pipe inlets.

Should I use landscape fabric in French drain?

Non-woven geotextile fabric is the best choice for drainage applications where water flow through (permeability) is the main concern. Non-woven landscape fabric is commonly used in French-drains, drain-fields, and erosion control.

Do french drains need rocks?

The stone should be no less than ¾” and dense (we suggest Granite, or River Gravel) so it will allow good water flow. Lime Rock, although inexpensive, is a poor choice for a French Drain because it will begin to deteriorate over time and eventually begin to pack down and restrict flow.

Is river rock good for French drain?

Hard rocks such as granite or river gravel prove viable options for a French drain because they won’t break down over time as much as other rock varieties, such as sandstone and limestone.

What kind of rock do you use for drainage?


For the best drainage, look for coarse washed rock (gravel) that is screened, with a stone size of 1/2 to 3/4 inch. Smaller rock with fine particles could clog the holes of the drain pipe. Pea stone works, but the smooth stones settle together and don’t move as much water as coarse rock.

How does pea gravel help drainage?

Because the individual stones of pea gravel are rounded, pea gravel is prone to packing together to form a solid mass. This prevents water from draining.

How do you backfill a drain pipe?

Quote from the video:
Quote from Youtube video: Used it is always important to knife the backfill material under the Hodge of the pipe to prevent voids. To help ensure even placement of backfill material around the pipe dump the material directly.

Can you pour concrete over drain pipe?

Pouring concrete around PVC pipes can be useful in a variety of household and industrial applications, such as building garden ponds or installing outdoor plumbing. The job can be simple and cost-effective when the correct preparations and techniques are applied.

Does concrete eat PVC?

A. According to Bernard Erlin, the principal chemicals in concrete that could conceivably attack plastics are calcium hydroxide, sodium hydroxide and potassium hydroxide. Erlin cites a table from Handbook of Chemistry and Physics stating that rigid PVC has excellent resistance to strong alkalies.

How deep should drain pipe be under concrete?

You will find your sewer lines 12 to 24 inches below the concrete slab in a slab house. All homes require a foundation to help support the weight of the house. A slab house uses a concrete slab as its foundation.

How do you bury a waste pipe in concrete?

Quote from the video:
Quote from Youtube video: So it's really important that as you backfill. You go a little slowly. And you use your fingers and hands and tuck the material underneath the pipe watch how I do it.

Can I bury PVC in concrete?

For properly designed and installed concrete structures, there is no damage to PVC pipe from contact with concrete: no physical damage, no chemical attack, no harmful long-term effects.

Can you bury PVC pipe in concrete?

PVC pipe embedded in concrete should be fine under most codes I’ve seen. You’d need to sleeve something like black, galvanized, or no-hub iron pipe, but PVC and ABS are impervious on any reasonable timeline (~hundreds of years.)