Day to day maintenance of Sewage Drainage and Plumbing systems cleaning of drains including works related to monsoon season for New Airport Colony Mumbai during 2026 27

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 desilting Of manholes and dechocking Of sewer lines. Dechocking 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

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 silt 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

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.

Providing and placing in position 100 mm thick factory made machine batched & machine mixed Precast RCC Rectangular Covers on drains of footpath of various sizes, of M-25 grade cement concrete for RCC work, including cost of centering, shuttering, reinforcement of 8 mm dia TMT bars of Fe 500 grade @ maximum 100mm c/c on both ways , neat cement punning on finished surface, properly encased on all edges with 1.6 mm thick , 100 mm wide MS sheet duly painted over priming coat , reinforcement to be welded at edges with MS sheet and providing 2 Nos. 12 mm dia bar for hooks etc i/c cost of cartage, all leads & lift, handling at site etc. all complete as per direction of Engineer-in-Charge.

Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 10 mm and down gauge), including finishing with cement mortar 1:3 (1 cement : 3 fine sand) as per standard design :

Providing and fixing on wall face unplasticised - PVC moulded fittings/ accessories for 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. 75mm diameter

Providing and fixing on wall face unplasticised - PVC moulded fittings/ accessories for 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. 110mm diameter

15 mm cement plaster on rough side of single or half brick wall finished with a floating coat of neat cement of mix: 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 direction of Engineerin-Charge. With cement mortar 1:4 (1cement: 4 coarse sand)