Rejuvenation of existing open wells RWH Astanthiranaicker street in East Zone within the Coimbatore City Municipal Corporation (CCMC) Area in Ward No 58 East Zone

Clearing of bushes, grass, and undergrowth around and inside the open well area including uprooting of vegetation and disposal of the same up to a lead of 50 meters, complete as directed by the Engineer-in-Charge.

ORDINARY SOIL (SS20B) Earth work excavating and depositing on bank with initial lead of 10m & initial lift of 2m in Sand, silt or other loose soil, wet sand or silt not under water, light black cotton soil, sandy loam and ordinary soil including excavated earth (SS20B) [CCMC DSR, Item No.-1,a]

Removal of sludge, slush, silt, debris, plastic waste, water weeds, using appropriate special machineries like dredger along the cutter section having maximum capacity of 300cum solids per hour which can dredge to a maximum of 8.00m depth and dispose the dredged material to a maximum of 4Km on either one of the outer slope of river banks whichever is convenient as per the prevailing site conditions for easy conveyance and jungle clearance by pumping operation along with suitable pipeline and other required accessories with other mechanical devices for the entire stretch to reach the bank. the rates including cost of transportation, Mobilization and demobilization of machinery, hire charges, cost of fuel, labour charges for surveying and operation of dredger, crew and other related works etc.

22.29 to 23.0 Mtr.

23.0 to 24.0 mtr.

24.0 to 25.0 mtr.

Dewatering using 3HP to 70HP diesel engine pumpset including Hire charges, cost of Diesel, Engine oil, pump operator, labour charges, conveyance of pumpset and fuel to site and back, loading, unloading and any other incidental charges etc., complete.

Random rubble masonry in cement motor 1:5 (one Part of cement, Five part of Crushed Stone Sand (M- Sand)) mix using all granite stones and bond stones for foundation and basement from approved quarry including watering, curing, and labour charges etc., completed as per standard specification.

Plain Cement Concrete 1:2:4 (M-15) (one cement, two fine aggregates and four coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification.

Pointing Random Rubble masonry with Cement Mortar1:3 (One Part of Cement and Three Part of Palstering Sand (P- Sand)) to flush pointing , curing etc complete - 10 sqm S.I.327

Plastering with cement mortar 1:3 (One part of Cement and Three part of Plastering Sand (P- Sand)) 20mm thick in all floors including cost and conveyance of all materials to site and labour charges etc, Complying with standard specifications

Supplying Mild Steel Grills over the open well including painting etc. complete.

Fixing in position mild steel grills for windows, ventilators, etc.

Painting two coats of newly plastered wall surface with ready mixed Cement paint of first quality and of approved colour over apriming coat including preparing the surface, clean removal of dirt and including necessary plaster of paris putty wherever required etc., complete complying with standard specification. (Sl.No.395)

Construction of underground filter having size- 1mx1m. Inside with 230mm thick brick masonry, with inside-outside plaster, bed concrete and coping in M-15 Grade including filling filter sand (of size 1mm to 2mm) 500mm thick over garvel (of size 5 to 10mm) 500mm thick over Boulder (of size 5 to 20mm) 500mm thick with all labour material etc. complete.

Construction of underground Chamber having size- 0.60mx0.60m inside with 230mm thick brick masonry, with inside-outside plaster, bed concrete and coping in M-15 Grade including excavation and necessary labour and material etc. complete.

Providing and fixing M.S Ladder 600mm wide, with vertical angle 65x65x6, Horizontal 16mm Dia. MS Bar @ 300mm C/c with 50x50x6 MS angle support @ 3000mm C/c with necessasry painting and fixing in Concrete block etc. complete.

Supplying PVC Pipes for rainwater harvesting [working pressure: 4kg/Sq.cm] (M0873) PWD DSR Pg. No. 146 (2024-25)

160mm Dia

Lowering PVC/ DWSC rigid pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste.

160mm Dia