Step One: Mark Installation Area. Before you begin, clearly mark the path for the installation of the drainage pipe. … Step Two: Dig a Trench. Dig a deep trench where you plan for the drainage to end. … Step Three: Attach Pipe. … Step Four: Fill Trench.

How deep should a 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 is the correct fall for underground drainage?

Here is some common guidance for ensuring compliance when installing your pipes: Foul water pipe gradients must ensure wastewater velocity of 0.7m/s at minimum. For less than 1l/s, a fall of 1:40 (25mm per metre) is appropriate. For discharge from any WC, a fall of 1:80 (12.5mm per metre) is recommended.