Cleaning and repairing of choked sewerlines of CTO compound, Dhanbad.(BA- Dhanbad)

Amount

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan) including dressing of sides and ramming of bottoms, lift up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

a) All kinds of soil.

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50m outside the periphery of the area cleared.

Felling trees of the girth (measured at a height of 1 m above ground level) including cutting of trunks and branches, removing the roots and stacking of serviceable material and disposal of unserviceable material.

a) Beyond 30 cm girth up to and including 60 cm girth

b) Beyond 60 cm girth up to and including 120 cm girth

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :

a) 1:1½:3 (1 Cement: 1½ coarse sand(zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level :

a) 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level.

a) Thermo-Mechanically Treated bars of grade Fe-500D or more.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes.

a) 110 mm diameter

12 mm cement plaster finished with a floating coat of neat cement of mix :

a) 1:3 (1 cement: 3 fine sand)

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

a) Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Constructing brick masonry manhole in cement mortar 1:4 ( 1 cement : 4 coarse sand ) with R.C.C. top slab with 1:1.5:3 mix (1 cement : 1.5 coarse sand (zone-III) : 3 graded stone aggregate 20 mm nominal size), foundation concrete 1:4:8 mix (1 cement : 4 coarse sand (zone-III) : 8 graded stone aggregate 40 mm nominal size), inside plastering 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with floating coat of neat cement and making channels in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement complete as per standard design :

a) Inside size 90x80 cm and 45 cm deep including C.I. cover with frame (light duty) 455x610 mm internal dimensions, total weight of cover and frame to be not less than 38 kg (weight of cover 23 kg and weight of frame 15 kg) :

i) With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Extra for depth for manholes

a) Size 90x80 cm

i) With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Deduct for Supplying and fixing C.I. cover without frame for manholes :

a) 455x610 mm rectangular C.I. cover (light duty) the weight of the cover to be not less than 23 kg.

Making connection of drain or sewer line with existing manhole including breaking into and making good the walls, floors with cement concrete 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) cement plastered on both sides with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement and making necessary channels for the drain etc. complete :

a) For pipes 100 to 250 mm diameter

Periodic cleaning of sewer line, sewer manhole, by using bamboo/rod for clearing the sewer line,taking out sludge, debris, rubbish and other waste materials, if any, from the sewer line and flooding/flushing with sufficient quantity of water with pressure to ascertain through cleaning of drainage system for smooth and proper functioning of sewer line including disposal of the all waste material outside the muncipal limit or burried into pits at safe available distance as directed all complete. (Note-The operation includes cost of all and nothing shall be paid extra on any account)

a) Sewer line upto 150 mm dia

b) Sewer Manholes of all sizes.

Cleaning of septic tank, adjoining chambers and connecting soil waste pipe lines by diesel running vehicle mounted hydraulic operated high pressure suction cleaning machine , removing the sludge deposits on floor and walls of the tank and chambers, removal of chokage, if any, from the pipe line, all complete as per direction and entire satisfaction of Engineer-in charge

Supply of labour for carrying out miscellaneous jobs like cleaning, manual shifting of materials, etc as and when required, on per day basis.

PRAMOD KUMAR (BID ID -825914)