O AND M SCHEME 2025- 2026

Amount

Earth Work Excavation for foundation in all types of soils and sub soils to full depth (such as Soils in Rock / Silt / Light Black Cotton Soil / Ordinary Soil ) except in rock requiring blasting but inclusive of shoring, shuttering and bailing out water wherever necessary and refilling the sides of foundation with excavated earth other than sand in layers of 150 mm thick well rammed and consolidated, depositing the surplus earth in places shown by the Departmental Officers with initial lead of 10 m and initial lift of 2 m. Complete as per TNSS 23 & 24, V, VI (S2), VII, 9,10

First depth of 2m

Hard stiff clay, stiff black cotton, hard red earth, shales, murams, gravel, stoney earth and earth mixed with small sized boulders for Sump 2.00 m - 3.00 m

SDR - (Not Requiring Blasting) Earth work excavating and depositing on bank with initial lead of 10 m & initial lift of 2m in Soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting. PWD SOR Page No : 29 W 0062

MR-&-DMR (Not Requiring Blasting) Earth work excavating and depositing on bank with initial lead of 10 m & initial lift of 2m in medium rock and dense medium rock not requiring blasting PWD SOR Page No : 29 W 0064

Supplying and filling in foundation and basement with Crushed Stone Sand (M- Sand) in layers of not more than 15cm thick well rammed watered and compacted etc., complete, complete as per Standard Specification TNSS No. 24 & 25.

Plain Cement Concrete of mix 1 : 4 : 8 (One part of Cement four part of sand eight part of aggregates) using 40mm gauge hard broken including cost conveyance of all materials to site including formwork and centering labour charges, transporting and placing in position including shoring, strutting, forming protective bunds, cofferdams bailing out of water labour for mixing compacting, finishing and curing, working at depths, tools and plants and incidental charges such as sheeting, shoring and bracing and their subsequent removal etc., complete as per standard specification. TNDSS NO: 28 V, VI (S2) V,VI (S5A) VII

Providing and laying in position Standardised Concrete Mix M-20 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 325Kg/ cum and maximum water cement ratio of 0.55 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of sand, but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers - The Coarse and Fine aggregates to be used should comply with the requiremnents of IS standards. (No separate payment will be made by the Department for the excess usage of materials) -Footing, Plinth beam, Tie beam/Lintel, Ground Floor Roof beam, salbs, Sloped roof beam and slabs

Below G.L.

Ground Floor

Providing and laying in position Standardised Concrete Mix M-30 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 400Kg/ cum and maximum water cement ratio of 0.45 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of Crushed Stone sand (M- Sand) but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers - The Coarse and Fine aggregates to be used should comply with the requiremnents of IS standards.

Below G.L.

Below G.L upto 1.50m depth

1.50m to 4.50m depth from G.L

Above G.L

Above G.L upto 4.50m height

Above 4.50m to 7.32m ht., from G.L

Above 7.32m to 10.98m ht., from G.L

Above 10.98m to 14.64m ht., from G.L

Above 14.64m ht., to 18.30m ht.,

Above 18.30 m to 21.96m ht., from G.L

Supplying and errecting steel centering including necessary supports for plain surfaces for Reinforced Cement Concrete works such as Coloumn footing,Coloumn pedestals,plith beams, grade beams,staircase steps,etc which requires only nominal strutting using mild steel sheetsof size 90mm x60mm and 10Bg stiffened with welded mild steel angles of size 25mm x 25mm x 3mm for boarding, laid over silver oak joists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervels etc complete in all floors Complying with standard Specification without Strutting. ( TNSS NO or NBC No 30(S) 86 86 A V, VI(S3)VII

Plain Surface

Upto 3.30m ht., below GL

From 3.30 above

From 3.30 - 4.30M above GL

7.30 - 8.30M above GL

10.30 - 11.30M above GL

15.30 - 16.30M above GL

From 3..3m to 4.3 m from floor slab

Centering for Square column

upto 3.30m ht. Below GL

upto 3.30m ht.

From 3.30m to 4.30m ht.

4.30 m to 5.30 m height

5.30 m to 6.30 m height

6.30 m to 7.30 m height

7.30 m to 8.30 m height

8.30 m to 9.30 m height

9.30 m to 10.30 m height

10.30 m to 11.30 m height

11.30 m to 12.30 m height

12.30 m to 13.30 m height

13.30 m to 14.30 m height

14.30 m to 15.30 m height

Centering for Circle column

upto 3.30m ht. Below GL

upto 3.30m ht.

From 3.30m to 4.30m ht.,

From 4.30m to 5.30m ht.,

From 5.30m to 6.30m ht.,

From 6.30m to 7.30m ht.,

From 7.30m to 8.30m ht.,

From 8.30m ht., to 9.30m ht.,

From 9.30m ht. to 10.30m ht.

From 10.30m ht. to 11.30m ht.

From 11.30m ht., to 12.30m ht.,

From 12.30m ht., to 13.30m ht.,

From 13.30m ht., to 14.30m ht.,

From 14.30m ht., to 15.30m ht.,

From 0m to 3.3 m from floor slab

Centering for curved surface

14.30 - 15.30M above GL

15.30 - 16.30M above GL

From 0m to 3.3 m from floor slab

From.3m to 4.3 m from floor slab

Supplying ribbed tor steel rods including cutting cranking fabricating assembling laying in exact position tying with soft steel wire 16 or 18 BWG etc. complete for all RCC Works. as per the design given including cost of steel and binding wire also in all floors as per standard specification. SS86 & 86A, V, VI (S3) (S6) VII.

Brick work in CM 1:5 (one cement & five sand) using II class ground moulded bricks of size 9"X43/8"X 23/4" standard specification including finishing, curing,etc., complete complying with standard specification 31 & Similar to 31C V, VI (S5) VII

Pump room Below G.L.

For Super Structure

Special Plastering in Cement Mortor 1:3 Mix (one part of Cement,,three part of sand)10mm thick including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc. complete. Complying with std. specifications.TNDSS NO: 56, 57

Plastering in Cement Mortor 1:5 Mix (one part of Cement,, five part of sand)12mm thick including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc. complete. Complying with std. specifications.TNDSS NO: 56, 57

Weathering course in brick jelly lime concrete using broken brick jelly of size 20mm uniform gauge in pure slaked lime (no sand to be used) to the proportion of brick jelly to lime being 32:12.5 by volume and laid over the RCC roof slab in a single layer of required slope and finished by beating the concrete with wooden beaters of approved pattern, keeping the surface constantly wet by sprinkling lime jaggery water, etc., complete as per standard specification and as directed by the deparmental officers.61 V VI, (VIA) 3

Finishing the top of roof with one course of machine pressed tiles of size 200 mm x 200 mm x 20 mm of approved quality in Cement Mortar 1:3 (One Cement add three sand) 12 mm thick mixed with water proofing compound conforming to ISS at 2% by weight of cement used and the joints pointed neatly to full depth of tiles with the same cement mortar mixed with red oxide and water proofing compound including curing etc., complete as per standard specification and as directed by the deparmental officers 44 H V, VI, (S5A) VII ,3

Supplying and Painting the new plastered walls with two coats of Exterior emulsion paint (weather proof ) first class quality and of approved colour over a priming coat including thorough scrapping clean removal of dirt etc. complete and including necessary plaster paris putty etc. wherever required.as per (ISI STD) (It mustprovide excellent resistance against the growth of algae and fungi on the walls. And it must offer excellent protection against alkali and UV degradation and the durability period should be 5 years. 61 V, VI (S4) 3

Supplying and fixing UPVC (Un-Plasticized Polyvinyl Chloride) Windows of casement type (open) from the profile the size of outer frame 60mm x 58mm and shutter profile are reinforcement with GI/1mm 25GSM and 100% corrosion free, the profiles are multi chambered sections with wall thick of 2mm. The EPDM rubber (black colour) covered with over all the edges of frame and shutter the shutter will be provided with spag multi power point locks and also it operates as handle. The corners and joints should be welded and cleaned. Radiations free pin headed plain or brown olour glass 4mm thick should be provided to the shutter and it should not allow leakage of water even at most ranging storms and should have key lockable action, security protective hinges, strong locking systems and as per size for arresting noise and energy loss. The connecting mechanism between sash and outer frame that enables opening of the window. The window should be fixed to the wall with 100% packing with screws and silicon packing all round the frames. The window should be got approved from the executive Engineer before use on work PWD SOR Page No : 109 Sl. No : M - 0673

Providing granolithic floor finish of the following thickness with plain cement concrete 1:2:4 (One Cement, Two sand and Four aggregate) using 10 to 12mm gauge hard broken stone jelly including laying, finishing and the top rubbed smooth with power trawl, thread lining, curing etc. complete complying with standard specification and as directed by the departmental officers. (The rate is inclusive of necessary planking for panelling wherever necessary and as directed by the departmental officers)

Supply and fixing of Collposible gate and M.S Grills for Windows, with one coat of Red oxide Primer including all costs such as welding, grinding and fabrication charges, cost and conveyance of all materials to site etc,complete as per standard specification. including phosphating as per ISI with rust preventive primer & ready to assemble condition for easy installation at site including dismantling making necessary with power drill to the accessories such as supplying and fixing holdfasts, plastic bush inserts receiver runner bottom shock absorbers etc. and Steel Door Complete as Directed by the Departmental Officer.

Providing and fixing RCC inside access ladder for Sump of approved pattern and design in RCC M20 design mix of ISS gauge 0.40m width, 0.10m thickness, 0.12m breadth for side post, 0.05m thickness 0.12m breadth for steps with suitable inclination including cost of cement, reinforcement centering, finishing, curing etc., complete and as directed by Departmental Officers.

Construction of RCC Spiral stair case in RCC M20 design mix concrete of 1.80m dia of required height for approach to the roof of Service Reservoir with RCC hand rails as per type design No.Sanitary Engineer/PH(M) NO.18/64 - 65 Sanitary Engineer(PH) 3/64 including necessary earth work excavation in various classification of soils met with at the site of work for providing foundation concrete in CC 1:4:8 mix, RCC footing M30 mix, GL platform etc., including cost of steel reinforcement, fabrication charges, scaffolding, centering precasting charges, cement painting the surfaces etc.,complete and as directed by the TWAD Board Officers. The staircase shall be braced to the column of Service Reservoir at suitable interval (Height is mentioned from GL to roof slab)

Providing and fixing in position of precast RCC (1:11/2:3) Hand rails of approvced design for one meter height by using 20mm HBG stone including cost of all materials, centering, shuttering, strutting, reinforcement, placing of concrete, finishing, curing and fixing in position on the roof slab etc.,complete and as directed by dept officers.

Supply,delivery and fixing in position of CI Manhole frame with cover of size 0.60m x 0.60 (heavy duty) etc.complete and as directed by TWAD Board Officers.

Refilling the sides of foundation with excavated earth (other than sand) in layers of 15cm thick,watered well rammed and consolidated etc. complete complying with standard specification removing and spreading the surplus earth at the placed shown and as directed by the Departmental Officers.

Plastering in Cement Mortor 1:4 Mix (one part of Cement,, four part of sand)20 mm thick including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc. complete. Complying with std. specifications.TNDSS NO: 56, 57

Supplyong of Ductile Iron class PN - 10 flanged pipes as per IS 8329/2000 (each double flanged pipe length shall be 2.0m) TWAD,P.No - 37 WD M 0686

For over flow 250mm dia TWAD,P.No - 37 WD M 0686

For outlet 300mm dia TWAD,P.No - 37 WD M 0687

Supply and delivery of the following dia of DI D/F Gate sluice valves (soft seated) resilient seated soft sealing Gate Valves(Sluice Valves) with body Bonnet of Ductile cast iron ofGrade GGG 40 or equivalent grade,Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 ORing protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 4846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and out side with pocket less straight through body passage. All the valves are to be compatible for buried application withpressure rating PN 10/16. TWAD SoR P.No - 66, 67

For DI 250mm dia Valve WD M 1202

For outlet 300mm dia WD M 1203

Supply & delivery of following DUCTILE IRON SPECIALS AS PER IS 9523/2000 for valve for OHT as per IS standards TWAD SoR P.No - 40 WD M 0779

Flanged spigot (tail pcs) specials for 250mm dia Valves (Such as Inlet,scour & over flow)

Flanged spigot (tail pcs) specials for 300mm dia outlet Valves

Specials for installation of double flanged pipes

DI 250mm dia Duck foot D/F bend

DI 300mm dia Duck foot D/F bend

DI 250mm dia flanged socket

DI 300mm dia flanged socket

DI 250mm dia 90 degree D/F bend

DI 300mm dia D/F 90 degree bend

Providing pipe connection by lifting pipes and specials in vertical direction and placing the same for required alignment including lifting the pipes and specials in various heights of inlet, outlet, overflow and scour including earthwork excavation conveying the pipe and specials into the trenches, laying to proper grade and alignment cutting, threading and jointing with jointing materials with required specification including labour charges and supply of valves pipes, specials MS Clamps to fix the pipes with the columns including all taxes duties and connected charges etc. complete and taxes duties and connected charges etc. complete and as directed by Engineer incharge.TWAD,P.No - 196 WD W 0753 - WD W 0762

Vertical laying up to 2m ht. from G.L.

Vertical laying from 2m to 4m.

Vertical laying from 4m to 6m

Vertical laying from 6m to 8m

Vertical laying from 8m to 10m

Vertical laying from 10m to 12

Vertical laying12,m 14m

Vertical laying14m 16m

Vertical laying16m 18m

Vertical laying18m 19.5 m

Labour charges for painting Name Board Emblem in accordance with the size and specifications as approved by the Board on the Service Reservoirs including cost of all consumables etc., complete and as directed by Departmental Officers. TWAD SOR Page No : 195 WD W 0745

Providing and fixing of cut stone (Rough dressed) set in CM 1:3 of size 0.45 X 0.45 X 0.15M at site including cost of all materials, labour charges, curing etc., complete and as directed by Departmental Officers. (TWAD SOR Pg no.307 M 0057

Providing pipe connection work for Sump Rate including supply & laying of pipes, specials and valves etc., complete and as directed by Departmental Officers.

Supplying and fixing in position of RCC in side access ladder for oht of following size using 20mm size HBS jelly including cost of all materials, centring, shuttering,strutting,fabrication and placing in position of reinforcement, finishing, curing etc., complete and as directed by Departmental Officers.

Providing 110 mm PVC Ventilating Cowl using 20mm HBG stone including cost of all materials, centering, shuttering, strutting,reinforcement, placing of concrete, finishing, curing and fixing in position on the roof slab with mosquito proof net arrangement and etc., complete and as directed by Departmental officers.

Wiring with 2 x 1.5 Sq.mm (22/0.3) PVC insulated SC Unsheathed Cu. Conductor of 1100V grade in cuitable PVC rigid pipe concealed in wall and Ceiling with PVC accessoires in flush with wall with 3mm thick Hylum Sheet cover with TW Switch box and 5A F.T. Switch and making good of the Concealed portion with suitable colour for PVC CONCEALED LIGHT POINT/FAN POINT (for Electronics Regulator) (SD NO: 25)

Wiring with 2 x 1.5 Sq.mm (22/0.3) PVC insulated SC Unsheathed Cu. Conductor of 1100V grade in suitable PVC rigid pipe concealed in wall and Ceiling with PVC accessoires in Flush with wall 150mm x 100mm x 113mm TW Switch box with 3mm thick Hylum sheet cover for 5A 3 pin non inter locking CS Plug with continuous earth wire connection of 14SWG TC wire and making good of the Concealed portion with suitable colour for CONCEALED PVC PLUG POINT (SD NO: 38)

Supplying and Fixing of 3 phases 4 wire 4 way ICDB of 32 amps per way with 100 amps TPN MC switch with suitable trucking box. MS cable entry boxes and internal connection on suitable angle iron frame work with earth connection [ SD 148 ]

Supplying and Fixing of Horizontal Type 4 way Triple Pole natural MCB distribution board in sheet steel enclosure with 40 amps 4 pole MCB isolator as incoming and 12 Nos. 6A to 32 A MCB as outgoing in flush with wall and making good of the concealed portion with earth connection. [ SD 532 ]

Supplying and run of 4 of 4 sqmm (56/0.3) PVC ubsykated SC unsheathed Cu.Conductor of 1100V grade in suitable heavy gauge MS conduit pipe on wall and ceilling with continuous earth wire connection of 14 SWG TC wire with painting of suitable colour. [ SD 49 ]

Earthing as per PWD standard with an earth electrode of 2 M class ‘B’ GI pipe of diameter not less than 32 mm Complete with necessary masonry work. [ SD 212 ]

Supply and fixng of TNEB Moter Board suitable for 3 Phases 63A service connection made up of suitable angle iron frame work of size 2 feet x 1 1/2 feet using angle iron of size 1 1/2" x 1 1/2" x 1/4" rigidly fixed on wall covered with hylem sheet of size 2 feet x 1/2 feet of 6mm thickness with necessary bolts and nuts supports and supply and fixing of 3 Nos 63A fuse units (500V) 1 No. Neutral link, copper earth flat of size 1" x 1/4" with inter connection of EB meter to fuse units by 7/16 PVC insulated copper wire with earth connection complete(SD No :129)

Supply and delivery of Three phase of 600 LPM 50 mtr Head Submersible pumpset of Motor ISI/ISO with Three PHASE PANEL BOARD WITH TWO LEVEL GUARD AND AUTO START as per ISI Specifications including all cost and conveyance to site etc., Complete

Three phase of 600 LPM 50 mtr Head Submersible pumpset TWAD Page No :110 WD M 1780

Supply and delivery of Three Phase Panel Board - Star Delta with two level Guard and auto start (10.00 HP) suitable for Submersible pumpsets and accessories including all fittings suitable for Submersible pump sets.Panel Board should be provided as per specification. Rates inclusive of Packing, Loading, Freight, Unloading, Stacking, Transit and Insurance charges etc, complete TWAD Page No : 120 WD M 1916

Supplying and fixing of PVC insulated and sheathed 3 core 6sq.mm Flat type Copper cable cofirming to IS 694/ 1990 and including cost and conveyance of all materials to site and labour charges etc, complete as per standard specification.TWAD Page No : 124 WD M 1976

Earth work excavation and depositing on bank with initiallead of 10 m and lift of 2 M in for Laying of 250mm dia DI K7 Pipe for Pumping Main from Sump to OHT Line narrow trenches for layingof pipes for water supply and sewerage works in thefollowing type of soils as directed by Departmentalofficers such as Hard stiff clay, stiff black cotton, hard red earth, shales,murram gravel, stoney earth and earth mixed with smallsize boulders and hard gravelly soil.One cubicmetre ( TWAD SOR page No: 191 WD W WD-W 0664)

Supplying of DI Pressure pipes of 250mm dia of K7 of Standard quality Pipes as per IS 8329/2000 including Excise Duty and VAT at Site TWAD Page No : 34 WD-M0623

Conveying and Lowering DI pipes and Specials and to trench and Lowering in to the trenches,laying to proper grade and alignment including conveyance of waterfrom 1KM lead for filling during testing. TWAD Page No : 160 W0233

Jointing the D.I. -S/S Pipes and specials with rubber gasgket ( Tyton Joint ) curing and testing to the required pressure with water (inculding cost of lubricants ) including cost of Jointing Materials TWAD Page No : 164 WD-W0312

Supplying of CI D/F Sluice valve with Cap / Wheel as per IS 14846/2000 PN 1.0 with ISI mark including Excise Duty and VAT TWAD Page No : 57 WD-M1076

Supplying of CI Double air valve as per G & K Catalogue including Excise Duty and VAT TWAD Page No : 59 WD-M1109

Supplying of D/F Non return Valve CI single door Conforming to IS 5312 to be fixed after water metre flow recorder on pumping main near pump house with dash pot arrangements for 90% fast closing & 10% slow closing. TWAD Page No : 64 WD-M1168

Supply and delivery of DI D/F 250 mm Gate sluice valves (soft seated) resilient seated soft sealing Gate Valves(Sluice Valves) with body Bonnet of Ductile cast iron ofGrade GGG 40 or equivalent grade, Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 O- Ring protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 4846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and out side with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 ( TWAD SOR page No:66 WD M 1199)