How to choose the right materials for drainage and save the house from flooding ?

What materials for drainage to buy?

for removing excess moisture from the ground in the first place, will require sand and gravel.Sand is used for dumping a pillow under the branch pipes.The thickness of the sand layer is from 10 to 15 cm and the necessary amount of sand, gravel and the like, calculated by multiplying the thickness by dumping the total length of the trench.

Gravel plays in the drainage system as a natural filter, protecting the pipe from entering the soil particles, organic matter and sand.Fraction of rubble can be used from 20 to 40 mm.Instead of filling drainage ditches can use the gravel of the same faction.Loose materials for drainage should buy quality and well washed.

Excessive moisture and precipitation will bring your home a lot of trouble, if time does not care about the device vent system.Especially important is a good drainage for buildings standing on clay soils and loams, poor moisture passing.

main components for underground drainage system

Also purchase natural materials - sand, crushed stone and gravel, it is necessary to choose the right components for drainage

, by which the system assembly is carried out quickly and efficiently.

Their list is small, but requires a separate explanation for each item:

• geotextile - a synthetic non-woven material with micro, retention clay and silt particles, silt pipes.
• Drainage pipes are designed for drainage of ground moisture to the suction well.They are made of PVC or HDPE.On the surface of such a tube are applied oval openings.
• couplings used for joining drainage pipes on the straight sections.
• Shaped elements (tees, angles) are required to connect the pipes at the ring trenching system around the building foundation.
• Drain well be required to audit state and flushing clogged pipes.Its diameter may be between 315 to 425 mm and a height of from 1 meter to 3. It is made of durable plastic, is provided with a closed bottom and a lid.
• submersible pump for drainage designed for pumping water on the soil surface in the case of an overflow suction well.
• collector sump collects groundwater and stormwater, and takes them into the soil, into the outer storm sewers or open drains.

should be noted that it is not recommended to use a thin PVC pipe for laying sewage drainage system at a depth of 3 meters, as well as in areas with heavy traffic.For such cases are double corrugated drainage pipe that can be laid to a depth of 8 meters.

Why do you need and where to set the check valve for drainage?

collector well is able to accept and take a strictly limited amount of ground moisture.When heavy rains or melting snow mass surface runoff ends up in the well and the overflow drainage system, blocking its work.In order to block their access, use check valve for drainage , which is installed inside the pit.

Despite the relatively high cost, this element is required for the normal operation of the drainage system.The distance between the bottom of the check valve and the tray feed pipe, part of the collector well, should not be less than 12 cm.