Chennai Port Trust Tender

Bill of Quantities

Dismantling and removing the protruded caisson of JD western entrance wall to the required size, height and level above and below water by mechanical / wire cutting method as directed by the department by cutting and removing the concrete/top slab of caisson for removing the sand hearting/ slush, existing inside the caisson using excavators with necessary arrangements without damaging the adjacent caisson structures, to facilitate removal of damaged/leaned caisson front wall as per requirements including cutting and removing the liners, hire charges for under water welding & drilling equipment, loading, transporting and unloading the debris in Port premises within a lead of 2 Km including all labour, tools, equipment, divers, diving equipment, machineries/ equipment, transport, fuel etc., complete. Note: 1. ChPA will supply crane of suitable capacity with operator and fuel as and when required for cutting, removing, lifting and placing the broken concrete blocks at free of cost. 2. The requirement of crane shall be informed by the contractor at least a day in advance. 3. Cost for providing necessary supplementary arrangements to place the excavator shall be borne by the contractor. 4. The contractor shall make necessary Safety arrangements while carrying out the work and sand /debris shall not to be let out on the sea bed / channel. 5. The volume of sand removed will not be paid for and it is deemed to have been included in the item rate.

1.Levelling the sea bed and digout upto 15cm depth with skilled underwater divers and diving equipments, required to pack the geobag pillows in front portion of cavity in the caisson including cost of all labour, divers, diving tools, equipment etc., complete. Note: The work shall be carried out when there are no vessel movements at JD entrance channel.