What Is an Internal Drainage Board?

The plastic drainage plate is made of polystyrene (HIPS) or polyethylene (HDPE) as the raw material. The plastic base plate is stamped and made into a conical projection or a stiffened rib (or a hollow cylindrical porous). The raw material has been greatly improved and changed. Now it is made of polyvinyl chloride (PVC) as the raw material. The compressive strength and overall flatness have been greatly improved. The width is 1 to 3 meters and the length is 4 to 10 meters or more. .

The top surface of the conical projection is glued with a layer of filtering geotextile to prevent the dirt particles from passing through, so as to prevent the drainage channel from being blocked and the channel drainage to be smooth. The traditional drainage method uses masonry tiles as the filter layer and uses more pebbles

Plastic drainage boards are divided into two series: coils and sheets. The molding process uses a special process to press the plastic sheet out of a closed convex columnar shell to form a concave-convex film. The shell is continuous, with three-dimensional space and a certain support height. It is heat-sealed with a butyl rubber strip, and the top of the shell is covered with a geotextile filter layer, which is used for water seepage, hydrophobic, drainage and water storage products. Also known as: lap glue adhesive drainage board, drainage board, drainage protection board, water filter board, plastic bump drainage board,

Greening project: green roof of garage, roof garden, vertical greening, greening of pitched roof, football field, golf course.

Municipal works: airports, roadbeds, subways, tunnels, landfills.

Construction engineering: the upper or lower floors of the building foundation, the basement interior and exterior walls and floor, as well as the roof, roof impervious and thermal insulation layer.

Water conservancy projects: seepage prevention in reservoirs, impoundments, artificial lakes.

Traffic engineering: highway, railway subgrade, dam and slope protection layer ^[1]

1. Clean up the rubbish and cement on the laying site so that there are no obvious bumps on the site. The outdoor garage roof and roof garden need to have a slope of 2-5 .

2. The water discharged from the drainage board can be concentrated to the nearby sewer pipe or the nearby city sewer.

3. The basement floor is impervious to water, and the floor is suspended above the foundation, that is, a layer of drainage board is made before the floor. The round projection is downward, and there are blind ditches around the ground. The space of the drainage board flows into the surrounding blind ditch, and then flows into the catchment pit through the blind ditch.

4. The basement wall is impervious to water. Drainage panels can be laid on the main wall of the building, and the round projections face the main wall. A single wall is built outside the drainage board or steel mesh powder cement is used to protect the drainage board, so that the space of the seepage board outside the wall flows straight down into the blind ditch to reach the catchment pit.

5. When laying drainage boards in any area, care must be taken not to allow dirt, cement, yellow sand, and other garbage to enter the front space of the drainage boards to ensure that the space of the drainage boards is unobstructed.

6. When the drainage board is laid, protect it as much as possible. When laying the drainage board on the floor or in the outdoor garage, backfill the soil as soon as possible to prevent the wind from disturbing the drainage board and affecting the laying quality. The basement and inner wall must be protected as soon as possible to prevent the drainage board from being damaged by people or objects.

7. The backfill soil is cohesive soil. It is ideal to lay yellow sand on the geotextile for 3-5 cm, which is good for the drainage of the geotextile. If the backfill soil is a kind of nutritious soil or light soil, it is not necessary to lay one. Layer of yellow sand, the soil itself is very loose and easy to filter water.

8. When laying the drainage board, lay the next 1-2 fulcrum point to the right, or you can touch the two bottom boards together, and the top is covered with geotextile. As long as no dirt enters the drainage channel of the drainage board, you can keep the drainage smooth. .

1. Please store the drain board in a dry and ventilated environment to prevent direct sunlight and keep away from fire sources.

2. Please place the drainage protection board vertically or horizontally. Do not tilt or cross the horizontal pressure. Do not stack it more than 3 layers. Do not stack heavy objects.

3, laying should be smooth and natural, laying down the slope or according to the flow of water.

4. The overlap area should be 150cm when laying the geotextile alone. The overlap area should be compacted with glue or sand to avoid movement, and then backfilled. The first layer of backfill soil should be compacted before proceeding to the next step. The layered backfill must be compacted ^{[1 ]} .