What Is Corrugated Pipe?
Corrugated pipes are pipes that promote underground drainage through culvert drainage.
If a large amount of moisture remains in the ground, crops with growing roots cannot take in heat and air from the soil, which hinders their growth. Corrugated pipes have small holes in the wall of the pipe, and their role is to take in excess moisture from the ground. The water that permeates into the interior of the pipe flows through the pipe, creating a stream.
Drainage in farmlands and fields is handled by ditches, but corrugated pipes are used in areas away from ditches. Pipe diameters range from 50 mm to 150 mm, with polyethylene pipes being the most common. Piping connections are available with sockets or with sockets and caps.
Uses of Corrugated Pipe
Corrugated pipe is used for underground drainage around farmland, land, and gardens. Especially in farmland, after rain or excess watering, if water remains in the ground, it is difficult for crops to grow. In addition, water puddles not only in the ground but also above ground, exposing the roots of crops and causing root rot.
Corrugated pipes are therefore useful in wet and humid areas and in geological conditions that are difficult to drain. In particular, areas with a lot of low-lying land, such as Saga and Niigata prefectures, are heavily used for drainage.
Characteristics of Corrugated Pipe
Advantages
Corrugated pipe’s wavy pleats make it flexible and give a turbulent effect to the fluid. Its lightweight and high strength make it easy to handle and install. Another important feature of corrugated pipes is their low cost and long service life.
Corrugated pipe has fine holes and has excellent water collection and drainage properties, but it is sometimes used in combination with PVC pipe rather than on its own. This is because corrugated pipe is an excellent hydrophobic material, especially for crushed stone.
Disadvantages
The corrugated pipe has the advantage of being easy to handle, but it is difficult to install in a home garden because it requires rough design drawings and deep digging in the ground.
Types of Corrugated Pipe
The corrugated pipe comes in a variety of diameters. They are also available in a wide range of lengths, from 4m to 50m, allowing you to choose the length you need for your installation.
A corrugated pipe is characterized by its corrugated folds, but if the inside is corrugated, the liquid will not flow smoothly. There are products with a flattened inner surface that can solve this problem. This type is useful when you want to prevent clogging as much as possible.
How to Select Corrugated Pipe
The corrugated pipe comes in a great variety of diameters and lengths. They should be selected based on the area where they are planned to be installed, the expected drainage volume, and the depth at which they can be dug during installation.
When choosing a corrugated pipe, it is important not to mistake it for a product called Corrugated Tube, which is similar to corrugated pipe. Corrugated pipe is a product used to bundle wires, and although it is smaller than corrugated pipe, it is very similar in appearance.
Since the sizes and uses are very different, it is necessary to check carefully when considering the purchase of corrugated tubes through online shopping, etc.
How to Use Corrugated Pipe
When installing a corrugated pipe, first observe and survey the topography and soil conditions to determine the drainage destination. Next, the drainage route is determined, and a trench is dug with a slope to allow water to move smoothly toward the drainage destination. It is important to dig the trench to a depth of at least 30 cm to prevent exposure to hydrophobic material and loss of drainage capacity.
Once the hole has been dug sufficiently, large gravel, called crushed stone, is placed at the bottom and a corrugated pipe is installed. The area around the corrugated pipe is backfilled with hydrophobic material until it is completely hidden and then wrapped with a permeable sheet or non-woven fabric. The final step is to backfill the area with excavated soil, sand, or sand soil.
The final drainage destination is always to dig a hole in the underground permeable layer to ensure the flow of water after drainage.