Cleaning of underground and overhead water storage tanks, repair replacement of damaged fittings and other minor civil works in BSNL colony at Navratan Bagh, Indore under BA Indore

Amount

Cleaning of terrace/loft 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 under ground sump, Over Head R.C.C. Tank (independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations :-

(i) Tank shall be emptied of water by pumping & bottom shall be cleaned of slit and other deposits.

(ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water.

(iii) Chlorination of RCC internal surface by liquid chlorine.

(iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface.

(v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge.

Disconnecting damaged overhead/terrace PVC water storage tank of any size from water supply line and removing from the terrace including shifting at ground level as per direction of Engineer-in- charge.

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

15 mm nominal bore

Providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS : 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank.

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step CPVC solvent cement and testing of joints complete as per direction of Engineer in Charge. : Internal work - Exposed on wall

25 mm nominal bore

32 mm nominal bore.

40 mm nominal bore

50 mm nominal bore

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)

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

25 mm nominal bore

32 mm nominal bore.

40 mm nominal bore

50 mm nominal bore

Providing and fixing PVC cover of water tanks with necessary screws or nails i/c locking arrangements all complete (size of water tank feom 250 to 1000 litres).

Repairing of existing G.I. Pipe line by cutting,threading and providing necessary nipple,tee or bend etc all complete as per direction of Engineer in Charge.(a) From 15 to 32 mm dia.of pipes

Repairing of leakage in the existing 50 mm G.I. Pipe line by excavating trench cutting,threading and providing necessary nipple,tee or bend etc all complete as per direction of Engineer in Charge.(a) From 15 to 32 mm dia.of pipes

Repairing the holes (up to 200 mm dia.) inside the under ground tank concrete and rich plaster with 12 mm thick with floating coat of neat cement with mixing of water proofing powder etc all complete as per direction of Engineer in Charge.

Dilip Gadoeya Real Estate Pvt Ltd (BID ID -826050)

PRAAKRIT ENGINEERS (BID ID -826157)

MUNNA KHAN (BID ID -825889)