Maintenance of existing pump house at different schemes within the jurisdiction of Raishyabari RD block area under DWS sub-division Gandacherra (Gr-II

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means over areas (exceeding 30cm in depth, 1.5m in width as well as 10 sqm on plan) including disposal of excavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed. -All kinds of soil

Supplying and filling in plinth, under floor, foundations etc. with sand (fine) from local quarry with all lifts including spreading in horizontal layers, watering, grading to required slope, ramming, consolidating and compacting each layer by using plate compactor or by any suitable method complete.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering. a) All work upto plinth level

ii) 1 : 3 : 6 ( 1 cement : 3 fine sand : 6 graded well burnt brick aggregate of 40 mm nominal size)

iii) 1 : 4 : 8 ( 1 cement : 4 fine sand : 8 graded well burnt brick aggregate of 40 mm nominal size)

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 fine sand : 6 graded well burnt brick aggregate 20 mm nominal size) over 75mm bed of dry brick ballast 40mm nominal size well rammed and consolidated and grouted with fine sand including finishing the top smooth.

First class brick work in foundation and plinth including cost of all materials as required complete:

i) In cement mortar 1:4 ( 1 cement : 4 fine sand )

First class brick work in superstructure above plinth level & upto floor-five level including cost of all materials as required complete:-

i) In Cement mortar 1:4 ( 1 cement : 4 fine sand )

Half brick masonry work with first class bricks in foundation and plinth including cost of all materials as required complete:-

i) In Cement mortar 1:4 ( 1 cement : 4 fine sand )

Half brick masonry work with first class bricks in superstructure upto floor five level including cost of all materials as required complete:-

i) In Cement mortar 1:4 ( 1 cement : 4 fine sand )

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete.

i) Hot finished welded type tubes

Providing and fixing M.S. grills of required pattern in frames of windows etc. with M.S. flats, square or round bars etc. all complete.

I ) Fixed to steel windows by welding.

Providing and fixing 1mm thick M.S. sheet door with frame of 40x40x6mm angle iron and 3mm M.S. gusset plates at the junctions and corners, & with cleats with bolts & nuts, rivets, locking arrangement, handles, hooks & eyes, pinlets including embedding in cement concrete of required grade for fixing in position, all necessary fittings, including applying a priming coat of approved steel primer etc. complete as required.

i) Using flats 30x6mm for diagonal braces and central cross piece.

Providing and laying cement concrete 1:2:4 (1 cement: 2 fine sand : 4 graded well burnt brick aggregate) flooring finished with a floating coat of neat cement including cement slurry, rounding of edges and strips and cost of glass strips etc. complete.

i) 40 mm thick with 20 mm well burnt brick aggregate

Providing corrugated G.S. sheet roofing including vertical/curved surface fixed with polymer coated J or L hooks, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers or with G.I. limpet washers filled with white lead and including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete (up to any pitch in horizontal/ vertical or curved surfaces) excluding the cost of purlins, rafters and trusses and including =cutting to size and shape wherever required.

i) 0.63 mm thick Zinc Coating not less 275 Gm/m2

12 mm cement plaster of mix.

i) In cement mortar 1:4 (1 cement : 4 fine sand)

15 mm cement plaster on the rough side of single or half brick wall of mix

In Cement mortar 1:4 ( 1 cement : 4 fine sand )

Finishing walls with water proofing cement paint of required shade of approved brand and manufacture [Payment shall be made after submission of Test Certificate issued by the Manufacturer] :

New work ( two or more coats applied @ 3.84 kg/10 sqm)

Neat cement punning.

Demolishing reinforced cement concrete manually / by mechanical means including stacking of steel bars properly and disposal of unserviceable material with all lifts and upto 50 m lead etc. complete as per direction of the Engineer- in-charge.

Dismantling GS sheet roofing including ridges, hips, valleys, gutters wind ties etc. including dismembering and stacking of serviceable materials and unserviceable materials separately with all lifts and upto a lead of 50 m etc.complete as per direction of the Engineer- in-charge.

Dismantling old plaster or pointing, raking out joints, cleaning and preparing the surface for re plastering or re-pointing including disposal of rubbish to the dumping ground with all leads and lifts etc.complete as per direction of the Engineer- in charge.

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