Section 21-7. Use of cofferdams during excavation work

The construction, placement, alteration or removal of a cofferdam or caisson shall only take place under the supervision of a competent person.
All cofferdams and caissons shall be inspected regularly by a competent person.
Their stability and robustness shall be checked in an expedient manner.
Formwork, temporary supports and shoring shall be designed, dimensioned, installed and maintained so that they are able to withstand the loads to which they may be exposed.