Maintenance of Filter Beds Kalapathar water treatment plant at Swaraj Dweep under CD-I, .AP.W.D., Port Blair

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 upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

All kinds of soil.

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

1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources: 4 graded stone aggregate 20 mm nominal size derived from natural sources).

1:3:6 (1 Cement : 3 coarse sand (zone-III) derived from natural sources: 6 graded stone aggregate 40 mm nominal size derived from natural sources).

Centering and shuttering including strutting, propping etc. and removal of form work for :

Foundations, footings, bases for columns

Providing and fixing up to floor five level precast cement concrete solid block, including hoisting and setting in position with cement mortar 1:3 (1 cement : 3 coarse sand), cost of required centering, shuttering complete :

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).

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 coarse sand derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources) over 75mm thick bed of dry brick ballast 40 mm nominal size, well rammed and consolidated and grouted with fine sand, including necessary excavation, levelling & dressing & finishing the top smooth.

Providing, hcisting and fixing above plinth level up to floor five level precast reinforced cement concrete work in string courses, bands, copings, bed plates, anchor blocks, plain window sills and the like, including the cost of required centering, shuttering but, excluding cost of reinforcement, with 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.

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

Providing and fixing hand rail of approved size by welding etc. to steel ladder railing, balcony railing, staircase railing and similar works, including applying priming coat of approved steel primer.

G.I. pipes

Cement concrete flooring 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement, including cement slurry, but excluding the cost of nosing of steps etc. complete.

40 mm thick with 20 mm nominal size stone aggregate

12 mm cement plaster of mix :

1:4 (1 cement: 4 fine sand)

Distempering with oil bound washable distemper of approved brand and manufacture to give an even shade :

New work (two or more coats) over and including water thinnable priming coat with cement primer

Finishing walls with Acrylic Smooth exterior paint of required shade :

New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm)

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade :

Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground, all complete as per direction of Engineer-in-Charge.

With cement mortar 1:4 (1 cement : 4 fine sand)

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

Nominal concrete 1:4:8 or leaner mix (i/c equivalent design mix)

Providing wood work in frames of doors, windows, clerestory windows and other frames, wrought framed and fixed in position with hold fast lugs or with dash fasteners of required dia & length ( hold fast lugs or dash fastener shall be paid for separately).

Standard hard wood cat-II(A)

Providing and fixing panelled or panelled and glazed shutters for doors, windows and clerestory windows including ISI marked M.S. pressed butt hinges bright finished of required size with necessary screws including panelling with 12 mm thick marine ply (BWR) confirming to relevent specification with wooden cleats and block all complete as per direction of Engineer-in-charge.

35 mm thick shutter

Standard Hardwood

Providing and fixing glazed shutters for doors, windows and clerestory windows using 4 mm thick float glass panes including ISI marked M.S. pressed butt hinges bright finished of required size with necessary screws.

35 mm thick shutter

Standard hard wood

Taking out the old filter materials and staking at site with in lead of 50 Mtrs as per the Direction of Engineer-in-charge

Aggregate

Taking out perforated slabs and cement concrete blocks including stacking, shorting, clearning the surface by scrapping and wire brushing with fresh water including necessary repairs to minor damages or cracks as per the Direction of Engineer-in-charge

Removing and disposing of deposited silt from the filter bed unit and cleaning the surface and outlet pipes/chambers etc as per the direction of Engineer-in-charge

Re-setting the perforated slab excluding the cost of slab but i/c cost of shifting / setting and rearranging the blocks and perforated salbs in original position etc complete

Removing fungal and other deposited forgin materials from the surface by scapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc complete

Supplying and filling in plinth with stone aggregate for filter i/c washing cleaning watering consolidting and dressing up complete as per required gradation as per specification and as approved by the Engineer-in-charge

63mm to 22mm stone aggregate

20mm to 12.5mm stone aggregate

River sand

Extra for every additional lift of 1.5m or part thereof

Sand and soil/silt

Stone aggregate

Pre-cast concrete/slab

Providing and fixing name board of Radha Nagar Treatement Plant of size 6 x 4ft framed work and arrangement for fixing the same to ground with 40mm G.I. Pipe and M.S. Sheet 1.5mm thick with approved matter written on it as per the direction of Engineer-in-charge

C.M.ROY CONSTRUCTION