OPERATION and MAINTENANCE SCHEME 2024-2025

Amount

Sinking of well below water level including all incidental charges using special tools and plants such as air compressors, helmets etc complete including bailing out water for 4.50 m dia well

I depth of 2 m

II depth of 2 m

III depth of 2 m

IV depth of 2 m

V depth of 2 m

RCC 1:1½:3 (one cement, One & half sand, Three course aggregate) using 20mm size hard blue granite stone (machine crushed) for plinth beam excluding cost of reinforcement, fabrication and placing the grills in position and excluding cost of centering, shuttering, strutting but including curing and finishing mixing concrete using machanical mixer machine and compaction by machanical vibrator etc., complete and as directed by TWAD Board Officers.

Well curb

Ring Beam

Pillasters

Cover slab

Porous Concrete in CC 1:4 (one cement and four 20 mm size HBS) for steining of infiltration well including cost of mixing, placing, curing but excluding cost of centering etc complete as directed by Board officers.

RCC 1:1½:3 (one cement, One & half sand, Three course aggregate) using 20mm size hard blue granite stone (machine crushed) for plinth beam excluding cost of reinforcement, fabrication and placing the grills in position and excluding cost of centering, shuttering, strutting but including curing and finishing mixing concrete using machanical mixer machine and compaction by machanical vibrator etc., complete and as directed by TWAD Board Officers.

Providing Steel Centering using MS plates of size 90cmx60cm and stiffend with welded MS angle of size 25mmx25mmx3mm supported with country wood scantlings of size 10cmx6.5cm at 50cm c/c) and strutting with casurina props of 10cm to 13cm dia etc., complete as directed by the TWAD Board Officers.

For Plane Surface

For Curved Surface

Supplying fabricating and placing in position of RTS grills at all heights for reinforcement including cost of steel for all works and labour charges including cost of binding wire etc., complete for all RCC works and as directed by TWAD Board Officers.

Supply ,fabricating and fixing of 10cm thick RCC manhole cover of size 0.75 m x 0.75 m with necessary reinforcement and MS angle of size 50mm x 50mm x6mm thick fixed around the edges of the slab complete as directed by board officers.

Supply, delivery and fixing of PVC Encapsulated CI steps in position at 30cm center to center in zigzag manner as directed by board officers.

Providing Ventillating arrangements using 100 mm GI Pipe verticle length of 0.60m, 1 No of 100mm Tee and 2 Nos 900 elbow with welded mesh as directed by Board officers

100mm GI pipe

100mm GI Tee

100mm GI Elbow

Supply, delivery of MS cutting edge provide in the well curb portion using MS angle of size 65mm x 65mm x 10mm thick as per ISI standards and specification this cost includes fabrication and fixing in position etc., complete as directed by Board officers. (P 62)

Colour washing with Emulsion paint approved colour and quality over two coats of white washing for outside of the room including the cost of materials, labour charges, cleaning and preparation of the surface and curing etc., complete and as directed by TWAD Board Officers. Well Outside

Stening wall and Cover slab Rib

Plugging the bottom of the well with coarse sand of approved sizes and grade as directed by the Board officers Well portion

Labour charges for painting twad board Emblem in accordance with the size and specification as approved by the board (P 278)

Supply and fixing of RSJ beam of size 300mm x400 mm for supporting the submersible pumpset in infiltration well including painting and fixing in the infiltration well as directed by Board officers

Drilling of borewells of size 4” to 5” dia. in sedimentary formation using hand boresets including insertion of casing pipes and removal of casing pipes etc., including collection of samples as directed by the TWAD Board Officers.

Supply and delivery of 15 HP( 1000 x 60 lpm x m ) open well submersible motor with pump set including all labour charges etc., complete.,

20HP Pannel Board

Supply and delivery of 7.50 HP( 400 x 60 lpm x m ) open well submersible motor with pump set including all labour charges etc., complete.,

15.00HP Pannel Board

Jointing of L.T. Cables- 3,3.5,4 Core 1.1 KV Grade Armoured Aluminium Conductor Cable Conforming to IS 1554 Part I and as Amended Thereafter with ISI Marking

3.50 core 25 sqmm cable

3.50 core 35 sqmm cable

Earth work excavation for foundation and depositing on bank with in the initial lead of 10m and a lift of 2m in hard stiff clay, stiff block cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc. complete. complying with std. specifications.SS 20 B

Supply and delivery of DUCTILE IRON CLASS PN10 FLANGED PIPES AS PER IS 8329/2000 including cost of all materials, labour charges,etc Complete

DI Pipe 100mm

Jointing C.I/ D.I double flanged pipes and specials with rubber insertion or any equivalent to the required specifications with M.S. bolts and nuts etc., complete including charges for special tools and plants such as air compressor and helmets and sheet piles. etc (including cost of jointing materials)

DI Pipe 100mm

Refilling with excavated earth other then sand Complying With Standard Specifications including all labour charges etc.completed(DI Pipe 100mm)

Lowering GI pipes and specials to trench and laying to proper grade and alignment, jointing Cost.,

GI Pipe 100mm

Supply and eraction of motor pump set with pipes and transport charges rethreading, motor fittings and all labour charges etc., complete.,

Supply and delivery and fixing of 16mm dia Nylone Rope, including all cost and labour charges.,

Supply delivery of 140 mm PVC 6 Ksc pipes for casing

Supply and delivery of MS flat 50mm x12 mm size for anchoring of pipes

Plain Cement Concrete 1:2:4 Mix (one Part of cement, two Part of M- Sand and four Part of aggrigate) using 20mm size ISS HBG metal machine crushed from approved quarry including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc., complete as per TNDSS NO: 28 & VI (S2) VI (S5A) VII standard specifications as directed by Engineer incharge.

Supply, delivery and Fixing of 20 mm Anchoring Bolts with washer and Nuts