Maintenanceforwater tank and distribution lines Lichubagan

Amount

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

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

Half brick masonry with common burnt clay F.P.S. (non modular) bricksof class designation 7.5 in foundations and plinth in :

a ) Cement mortar 1:3 (1 cement : 3 coarse sand)

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

a ) 1:4 (1 cement: 4 fine sand)

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 directions of Engineer-In-Charge.

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

Cleaning and de-silting of gully trap chamber, including removal of rubbish mixed with earth etc. and disposal of same, all as per the direction of Engineer-in-charge.

Cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer cleaning machine fitted with pump having 4000 litres suction capacity and 6000 litres water jetting tank capacity including skilled operator, supervising engineer etc. for cleaning and partial de-silting of manholes and de-chocking of sewer lines. De-chocking and flushing of sewer line from one manhole to another by high pressure jetting system of 2200 PSI for sewer line from 150mm dia upto 300mm dia for all depth.

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)

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge..

a ) In cement mortar

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings. This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge : External work

a ) 20 mm nominal outer dia. Pipes.

b ) 25 mm nominal outer dia. Pipes.

c ) 32 mm nominal outer dia. Pipes.

d ) 40 mm nominal outer dia. Pipes.

Making connection of G.I. /CPVC distribution branch with G.I. main of following sizes by providing and fixing tee, male/female brass threaded CPVC connector etc. complete including cutting and threading the pipe etc. complete :

a ) 25 to 40 mm nominal bore

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :

a ) 25 mm nominal bore

b) 32 mm nominal bore.

c ) 40 mm nominal bore

d ) 50 mm nominal bore

Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete :

a ) 25 mm nominal bore

Providing and fixing G.I. Union in existing G.I. pipe line, cutting and threading the pipe and making long screws including excavation, refilling the earth or cutting of wall and making good the same complete wherever required :

a ) 25 mm nominal bore.

b ) 32 mm nominal bore.

c ) 40 mm nominal bore.

d ) 50 mm nominal bore.

Cleaning of over head pvc water storage tank (inside surface area) upto 2000 litre capacity at all heights with coconut brushes, duster etc., removal of silt, rubbish from the tank and cleaning the tank with fresh water disinfecting with bleaching powder @ 0.5gm per litre capacity of tank, including marking the date of cleaning on the side of tank body with the help of stencil and paint and disposing of malba, all complete as per direction of Engineer-in-Charge. (The old date already written on tank should be removed with paint remover or black paint and if date is not written with the stencil or old date is not removed deduction will be made @ Rs. 0.10 per litre if during cleaning any GI fittings or ball cock is damaged that is to be repaired by contractor at his own cost and nothing extra will be paid on this account)

Cleaning of existing R.C.C. base platforms at all heights for existing PVC water storage tank capacity upto 1000 litres including removing of shrubs,mallba,rubbish,bushes and cleaning the surface by repair work including necessary cuttings/repairs to plaster in patches etc all and making good and true to the horizontal surface etc all complete as per the directions of Engineer in charge.

Providing and fixing CPVC brass threaded fittings ( Male/female ) for making connection with existing G./I. Pipe line to replaced CPVC water supply pipe lineincluding necessary solvents/tafflon tape, testing of water supply line etc all complete as per the directions of Engineer in chagre. a) up to 25 mm nominal bore

Milan Dhar