Shoring of excavations re: pits and trenches

(1) No person shall enter any excavation over 1.22 meters (4 feet) in depth in unconsolidated material or consolidated material that may collapse unless the sides of the excavation are sloped to a safe angle or the sides have been shored up using a system acceptable to the Inspector. (2) Where the excavation walls are sloped as a substitute to shoring, the walls shall provide stable faces and in no case should they exceed a slope of one horizontal to one vertical. Sloping to replace shoring. (3) Shoring shall be installed from the top down and removed in the reverse order. (4) Material excavated from a pit or trench shall be kept back at a distance of 1 meter (3.3 feet) from the edge of the (5) Where the excavation is in rock and less than 2 meters (6.6 feet) in depth, the sides shall be scaled to prevent loose material from dropping on persons working in the excavation Scaling rock excavation walls. 92 and the width shall be such that a person is able to turn around without touching the sides of the excavation. (6) Where the excavation is more than 2 meters (6.6 feet) deep, the sides shall be supported in a manner acceptable according to international standards.