Excavation and Trenching. All trenches, 1.2m (4 feet) or more in depth, shall at all times be supplied with at least one ladder for each 30m (100 feet) in length or fraction thereof. Ladder shall be extended from bottom of the trench to at least 90cm (.3 feet) above the surface of the ground. The side of the trenches which are 1.5cm (5 feet) or more in depth shall be stepped back to give suitable slope or securely held by timber braching, so as to avoid the danger or sides to collapse. The excavated materials shall not be placed within 1.5m (5 feet) of the ages of the trench or half of the depth of the trench whichever is more. Cutting shall be done from top to bottom. Under no .circumstances undermining or under cutting shall be done.

Excavation and Trenching. All trenches, 1.5 (one decimal five) meters or more in depth, shall at all times be supplied with at least 1 (one) ladder for each 20 (twenty) meter length or fraction thereof. The ladder shall be extended from bottom of trench to at least 1 (one) meter above surface of the ground. Sides of a trench which is 1.5 (one decimal five) meters or more in depth shall be stepped back to give suitable slope or securely held by timber bracing, so as to avoid the danger of sides collapsing. Excavated material shall not be placed within 1.5 (one decimal five) meters of edge of trench or half of depth of trench, whichever is more. Cutting shall be done from top to bottom. Under no circumstances shall undermining or undercutting be done.

Excavation and Trenching. All trenches 1.2 m (4 ft) or more in depth, shall at all times besuppliedwithatleastoneladderforeach30m(100ft)inlengthorfractionthereof.Laddershallextendf rom bottom of the trench to at least 90 cm (3 ft) above surface of the ground. Side of the trencheswhich are 1.5 m (5 ft) or more in depth shall be stepped back to give suitable slope or securely held bytimberbracing,soastoavoidthedangerofsidescollapsing.Theexcavatedmaterialsshallnotbeplac edwithin 1.5 m (5 ft) of the edges of the trench or half of the depth of the trench, whichever is more.Cutting shall be done from top to bottom. Under no circumstances, undermining or undercutting shallbe done.

Excavation and Trenching. Contractor shall comply with all aspects of 29 CFR 1926.650; 1926.651; and 1926.652 with applicable appendices.

Excavation and Trenching. Under this contract, the Contractor shall solely be responsible for all costs of supplying, installing, maintaining and removing whatever dewatering equipment, sheathing, shoring and other materials and methods that may be required to cope with the ground conditions in order to complete the work. The Contractor shall be responsible for the reinstatement of the area disturbed by their operations to a condition equal to or better than the original condition. The unit bid prices under the appropriate items for restoration shall be deemed to have made due allowance for this contingency. It is strongly recommended that the Contractor use a trench box to install the watermain, sanitary sewer, storm sewer catchbasin leads, water services and any other pipes. The width of the trench box shall conform to OPSD 802.010 for Flexible Pipe, and OPSD 802.020 and OPSD 802.031 for Rigid Pipe. The height of the trench box shall be from 150mm below the bottom of the pipe to the level of the existing ground. If the Contractor does not use a trench box as described above, then payment for the Granular >A= material will be based on the theoretical dimensions, which are as follows: Width: Follow OPSD 802.010, OPSD 802.030 and OPSD 802.031 as applicable Height: From 150mm below the pipe to the level of the existing ground surface. Length: Equal to the pipe length Therefore, to calculate Granular >A= weight (tonnes): Granular >A= (tonnes) = 2.4 x (Width x Height x Length - (π x D2 x L) / 4) where, D = Pipe OD L = Length of Pipe π = 3.1416

Excavation and Trenching. All trenches, 1.5 meters or more in depth, shall at all times be supplied with at least one ladder for each 30 meters in length or fraction thereof .Ladder shall be extended from bottom to trench to atleast 1 meter above surface of the ground. Sides of a trench which is 1.5 meters or more in depth shall be stepped back to give suitable slope, or security held by timber bracing,so as to avoid the danger of side collapsing. Excavated material shall not be placed within 1.5 meters of edge of trench or half of depth of trench, whichever is more. Cutting shall be done from top to bottom. Under no circumstances shall undermining or undercutting be done.

Excavation and Trenching. All trenches, 1.5 metres or more in depth shall at all times be supplied with at least one ladder for each 20 metres in length or fraction thereof. Ladders shall be extended from the bottom of the trench to at least 1 metre above the surface of the ground. The sides of a trench, which is 1.5metres or more in depth shall be stepped back to provide a suitable slope, or be securely held by timber bracing so as to avoid the danger of side collapse. Excavated material shall not be placed within

Excavation and Trenching. All trenches 1.2 m. (4ft.) or more in depth, shall at all times be supplied with at least one ladder for each 30m. (100ft.) in length or fraction thereof, Ladder shall extend from bottom of the Trench to at least 90cm (3fts) above the surface of the ground. The sides of the trenches which are 1.5 m. (5 ft.) or more in depth shall be stepped back to give suitable slope or securely held by timber bracing, so as to avoid the danger of sides collapsing. The excavated material shall not be placed within 1.5 m. (5 ft.) of the edges of the trench or half of the depth of the trench whichever is more. Cutting shall be done from top to bottom. Under no circumstances, undermining or undercutting shall be done. 7 Demolition – Before any demolition work is commenced and also during the progress of the work,

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