SPECIAL REPAIRS OF SEWAGE LINE AND DRAIN PIPES AT MH AVADI, MAG NO 6 AND ARBORICULTURE AT MH AVADI UNDER GE AVADI

Opening and clearing blockage of kitchen trap, bath trap or WC of any pattern and in any position by rodding manually or mechanically up to the first manhole, complete all as specified and directed.

Cleaning blocked manhole of any description and in any position not exceeding 1.50 m deep, manually or mechanically, by removing sludge, night soil, silt and other deposited materials from the existing manhole of any size, collecting and transporting the sludge in sealed containers and disposing of the same outside the Cantonment/MD land in such a manner that no nuisance or unhygienic condition is created, complete all as specified and directed.

Taking out liquid sludge including floating sludge from septic tank of any description and in any position and cleaning the septic tank up to the bottom including walls to any depth from ground level by pumping through sewage disposal pump/honey sucker pump and removing the liquid sludge outside the MD land or into the nearest civil sewage manhole, ensuring that no nuisance or unhygienic condition is created, complete all as specified and directed. Note: Pump, honey sucker pump, sludge removal vehicle and all associated equipment shall be arranged by the Contractor at his own cost and nothing extra shall be paid by the Department.

Taking out sedimented sludge remaining after removal of liquid sludge/effluent from septic tank of any description, in any position and at any depth, cleaning the septic tank up to the bottom including walls, removing and disposing of the sedimented/solid sludge outside the MD land as Contractor's property in accordance with the Schedule of Credit, ensuring that no nuisance or unhygienic condition is created, complete all as specified and directed. Note: Pump, honey sucker pump, sludge removal vehicle and all associated equipment shall be arranged by the Contractor at his own cost and nothing extra shall be paid by the Department.

Demolition of cement concrete (unreinforced) of any description and in any position in ground floors/paving not exceeding 150 mm thick (below or above ground level) and disposing of the debris outside the premises of the Cantonment/MD land, complete all as specified and directed.

M&L for PCC 1:4:8, Type D-2 (using 40 mm graded stone aggregate) as in foundations, manholes, mass concrete and the like, complete all as specified and directed.

Demolition of brickwork or stone/boulder masonry built in cement mortar including quoins, arches, pillars and the like, but excluding ashlar facing, dressed stonework and precast concrete articles, and disposing of the debris outside the premises of the Cantonment/MD land, complete all as specified and directed.

M&L for modular brick masonry using fly ash bricks, built in cement mortar 1:6, straight or curved on plan exceeding 6 m mean radius, complete all as specified and directed.

M&L for PCC 1:3:6, Type C-1 (using 20 mm graded stone aggregate) as in coping, finishing exposed surfaces fair and smooth with extra cement, including necessary formwork, complete all as specified and directed.

M&L for PCC 1:2:4, Type B-2 (using 40 mm graded stone aggregate) as in benching of manholes and surface channels, including fair finish to exposed surfaces, chamfering, throating, weathering and necessary formwork, complete all as specified and directed.