Unstable Excavations

A competent person is to design the trench support techniques to suit the type of excavation and the ground conditions.

Consider the effects of the excavation on nearby structures.

Caissons & cofferdams are to be designed, constructed, maintained altered and dismantled by suitably qualified and competent people.

The history of the site is to be explored to determine whether there are any ground contaminants that may lead to IDLH environments during excavation.