Trench widths shall be a minimum of twice the pipe external diameter (pipe) or width (culvert). The Supplier shall remove any trees, roots, stumps or other obstructions which interfere with the construction of the drainage works. When such unsuitable material is discovered, the Supplier shall inform the Superior, who shall determine the extent of the removal of such material and the kind of material to be used as replacement. Removal and replacement of the unsuitable material shall be at a rate to be agreed.
When such unsuitable dirt is discovered, the Vendor will inform the Supervisor, who will determine the extent of the removal of such dirt and the type of dirt to be used as replacement. Removal and replacement of the unsuitable dirt will be at a rate to be agreed. Where soft clay or silt or other unsuitable dirt occurs at the completed excavated area excavation grade, such dirt will be removed and replaced with suitable excavated area base dirt.
The Supplier shall not permit pumped water to discharge on to any areas of existing plant, or on to any areas of earthworks being constructed, but shall ensure that all pumped water discharges into appropriate drainage channels. Loose material at the bottom of the trench excavation as a result of over excavation shall be removed if so directed by the Superior and replaced with approved bedding material at the Supplier's cost. Trenches for drainage pipes shall be excavated carefully to the required grade as indicated on the drawings with due allowance made for the minimum depth of bedding material required.
Trench excavation for any drainage pipe shall not be commenced until sufficient resources (including plant, equipment, pipes, culverts, bedding material, back fill material) are on site to ensure that construction of the particular drainage pipe may be completed in a swift orderly operation.
The Contractor shall not permit pumped water to discharge on to any areas of existing plant, or on to any areas of earthworks being constructed, but shall ensure that all pumped water discharges into appropriate drainage channels.
When such unsuitable dirt is discovered, the Vendor will inform the Supervisor, who will determine the extent of the removal of such dirt and the type of dirt to be used as replacement. Removal and replacement of the unsuitable dirt will be at a rate to be agreed. Where soft clay or silt or other unsuitable dirt occurs at the completed excavated area excavation grade, such dirt will be removed and replaced with suitable excavated area base dirt.
The Supplier shall not permit pumped water to discharge on to any areas of existing plant, or on to any areas of earthworks being constructed, but shall ensure that all pumped water discharges into appropriate drainage channels. Loose material at the bottom of the trench excavation as a result of over excavation shall be removed if so directed by the Superior and replaced with approved bedding material at the Supplier's cost. Trenches for drainage pipes shall be excavated carefully to the required grade as indicated on the drawings with due allowance made for the minimum depth of bedding material required.
Trench excavation for any drainage pipe shall not be commenced until sufficient resources (including plant, equipment, pipes, culverts, bedding material, back fill material) are on site to ensure that construction of the particular drainage pipe may be completed in a swift orderly operation.
The Contractor shall not permit pumped water to discharge on to any areas of existing plant, or on to any areas of earthworks being constructed, but shall ensure that all pumped water discharges into appropriate drainage channels.
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