Article 20 COFFERDAMS AND CAISSONS
Article 20
COFFERDAMS AND CAISSONS
1. Every cofferdam and caisson shall be -
(a) of good construction and suitable and sound material and of adequate strength;
(b) provided with adequate means for workers to reach safety in the event of an inrush of water or material.
2. The construction, positioning, modification or dismantling of a cofferdam or caisson shall take place only under the immediate supervision of a competent person.
3. Every cofferdam and caisson shall be inspected by a competent person at prescribed intervals.