What is the minimum permitted width of a trench for a 150 mm drain?

The minimum permitted width of a trench for a 150 mm drain is based on construction and safety standards to ensure adequate space for installation and maintenance. A trench that is too narrow can pose difficulties during the installation process, as well as create complications when trying to access the drain for repairs or inspections.

For a 150 mm drain, the minimal width of 350 mm provides sufficient space not only for the pipe itself but also allows for proper bedding material, which is critical for supporting the pipe and preventing damage. This width helps to accommodate necessary clearances and ensures that workers can safely maneuver and perform their tasks without risking collapse or other hazards associated with a poorly sized trench.

Having a width of 350 mm also aligns with industry best practices, promoting overall safety and efficiency in drainlayer operations. This understanding is crucial for maintaining the integrity of the drainage system and ensuring compliance with regulatory requirements.