Construction Of 3.50 LL Capacity of water Storage Ground Level Reservoir at vellyur Head works cum Pump Arrangement, 4 Nos of Borewell with Pipe line in Tiruvallur Municipality

Drilling Of 200mm Dia Sedimentary Bore Wells Near Kosasthalaiyar River At Velliyur Headworks Geo physical investigation Charges etc Completed as directed by department officer

Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc. By first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs, fuel, labour and drilling bentonite and water required for drilling at site ( Site will be shown by the TWAD Board Officers) including construction of mud pit.upto 60m depth ending below G.L. (SOR VOL - II) (WD-W0783)

Reaming 140/150 mm dia pilot bore to 300mm dia bore as directed by the TWAD Board Officer- Upto 60 m depth ending below ground level - (For 200mm dia borewell) (SOR VOL - II) (WD-W0794)

Reaming 300 mm dia pilot bore to 400/450 mm dia bore as directed by the TWAD Board Officer.Upto 60 m depth ending below ground level - (For 200mm dia borewell ) - (SOR VOL - II) (WD-W0816)

Labour Charges for inserting the PVC casing pipes assembly ( with slots or without Slots) in the drilled hole including welding the joints etc., complete and supplying and packing the angular space with pebbles if size and quality as approved by the Executive Engineer ,TWAD Board. The pebble should be of approved specification and stacked for premeasurement.- 200 mm dia PVC Casing Pipes assembly (SOR VOL - II) (WD-W0831)

Charges for developing the borewells for the entire depth with suitable Air Compressor (minimum 8 Hours) including transportation charges for Air Compressors as directed by the TWAD Board officersand conducting yeild test V notch method. Using 300 cfm. compressors. (SOR VOL - II) (WD-W0839)

Supply and delivery of unplasticised plain PVC Shallow casing pipes of the following diametres in 3 metre lengths both ends treaded as per IS 12818 / 1992 and as amended from time to time to suit shallow bore wells upto 60 metres depth with ISI marking including Loading unloading, freight, transit, insurance, excise duty sales tax etc., complete 200 mm CM dia PVC plain Casing Pipes - (SOR VOL - II) (WD-M0031)

Supply and delivery of unplasticised plain PVC ribbed screen pipes of the following diametres in 3 metre lengths both ends treaded as per IS 12818 / 1992 and as amended from time to time to suit shallow bore wells upto 60 metres depth with ISI marking including Loading unloading, freight, transit, insurance, excise duty sales tax etc., complete 200 mm dia PVC slotted casing pipes - (SOR VOL - II) (WD-M0032)

Supply and delivery of 200 mm dia end cap including taxes etc., as per standard specification etc .,complete (SOR VOL - II) (WD-M0115)

Supply and delivery of the following sizes of HDPE PE100 pipes (as per IS 4984/2016) & as per standard Specification. - 140mm HDPE 6KSC - (SOR VOL - II) (WD-M0190)

Supply and delivery of the HDPE specials conforming to ISO 21307-2011 and as per IS 7634 (part- 2) : 2012 and as amended from time to time with ISI marking including cost, all taxes, loading, freight unloading and stacking at site etc. complete and as directed by the TWAD Board officers. - 140mm HDPE 90 deg Bend for connecting main - (SOR VOL - II) (WD-M0288)

Supply and delivery of Tamper proof DI single chamber Air release valves with pressure range from PN 1.0 to 2.5 with body and cover made of Ductile Iron of grade GGG 40/45/50 or equivalent grade conforming to IS 1865 with food Grade Epoxy powder coating ( EP-P) inside and for outside of colour blue RAL 5005. ALL internal parts such as float,shell etc., cover bolts, made of Austenitic allloy steel of SS AISI 304/316. The float for DN50 made of polytetrafluroethylene/ Austentic alloy steel of AISI 304/316. Gaskets and seals of EPDM/ Neoprene rubber for TWAD Board works including all taxes, loading freight, transit, unloading and stacking them at site etc. complete and as directed by TWAD Board Officers. - 50 mm dia AV in 140 mm Main - (SOR VOL - II) (WD-M1192)

Supply and delivery of DI / GI specials required for Air valves (Arriaved sheet)

Earth work excavation for laying of various type / size of pipes in hard stiff clay, stiff block cotton soil, hard red earth shales murrams, gravel stoney earth and earth mixed with small sized boulders and hard gravelly soil and depositing on bank with an initial lead of 10M and initial lift of 2m including shoring, strutting bailingout water from the trenches wherever necessary and all other incidental charges such as barricading providing danger light etc., complete and as directed by the TWAD Board Officers. - Connecting main - 140mm HDPE 6KSC - (SOR VOL - II) (WD-W0700)

Refilling the excavated earth after the pipes were laid jointed and tested etc. complete.- 140mm HDPE 6KSC - (SOR VOL - II) (WD-W0700)

Lowering the following size of HDPE pipes and specials into the trenches and laying to proper grade and alignment etc. complete and as directed by the TWAD Board Officer - 125mm to 160mm dia (OD) HDPE pipe - 140mm HDPE 6KSC - (SOR VOL - II) (WD-W0431)

Jointing HDPE Pipes and Specials by butt fusion welding / electro fusion welding joints using fusion equipment as per ISO 21307-2011 and as per IS 7634 (part- 2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as directed by TWAD Board Officers. - 140mm HDPE 6KSC - (SOR VOL - II) (WD-W0621)

Testing of following HDPE pipes wiith hydraulic testing equipment by fuilling with water (including cost of water @ Rs.60/KL) and testing to recommended pressure in convinient stetches and attending the bursts if any occured during the tests, excluding cost of pipes, including other incidental and operational charges etc., complete as directed by TWAD Board Officers.- 140mm HDPE 6KSC - (SOR VOL - II) (WD-W0461)

HGS SS 20-B, Earth work excavation and depositing on bank with initial lead of 10 m and initial lift of 2 m in hard stiff clay, stiff black cotton, hard red earth, shales, murrums, gravel, stoney earth & earth mixed with small size boulders SS 20-B (CW-0061).

Earth work excavation & depositing on bank with initial lead of 10 m & initial lift of 2 m in soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting (W-0062).

Supplying and filling in foundation, basement, etc with filling crushed stone sand(M-Sand) in layers of not more than 15 cm thick well watered, rammed and consolidated etc. complete complying with standard specification and as directed by the departmental officers. ( Building Data 2025 -26

Cement Concrete 1:5:10 (One Cement, Five crushed stone sand and Ten hard broken stone jelly) using 40 mm gauge hard broken granite stone jelly for foundation including dewatering wherever necessary and laid in layers of not more than 15 cm thick well rammed, consolidated and including curing etc. complete complying with standard specification and as directed by the departmental officers -Mixing by mechanical means - (Building data 2025-26)

Providing and laying in position, Standardised Concrete Mix M-30 Grade by insitu machine mix concrete adopting weighing batch method 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 content of 400 kg/m3 and maximum water cement ratio of 0.45, including admixture (plasticiser / superplasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5.0 Cu.m) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 Cu.m) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m’) 7670 kg. of crushed stone sand, but excluding cost of reinforcement grill and fabricating charges, centering and shuttering and also 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, 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 requirements of IS Standards. (No separate payment will be made by the Department for the excess usage of materials).Beyond 1.50 m & upto 4.50 m below GL

Upto 1.50 m Below GL

upto 4.50 m above GL

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 2.10 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 50 cm spaced at abote 90 cm centre to centre and upported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton and as directed by the departmental Officers(Payment for centering shall be given after the concrete is laid) (Building Data 2025 -26)For 0.00 to 3.30 M ( Curved Surface)

Supplying and erecting steel centering including necessary supports for plane surfaces such as circular RCC column which require only nominal strutting using mild steel sheets made of 10 gauge thick welded with MS angle size 40 mm × 40 mm × 5 mm and supported by steel adjustable telescopic props of size 2 m × 2 m (expandable upto 3.60 m) made with outer steel pipe with dia 50 mm (3.60 mm thick) and inner pipe with dia 40 mm (2.90 mm thick) etc., complete in all floors complying with standard specifications. Steel adjustable telescopic props shall be provided by the department officers (payment for centering shall be given after the concrete will be laid).

Supplying, fabricating and placing inposition of RTS rods for reinforcement including cost of steel and binding wire, labour charges etc., complete fo r RCC works and as directed by TWAD BoardOfficers.For RCC works - up 16mm Rods - (Building Data 2025 -26)

Providing and fixing of cut stone (Rough dressed) set in CM 1:3 of size 0.30 X0.30 X 0.15M at site including cost of all materials, labour charges, curing etc., complete and as directed by Department. - Inside Sump

Supply delivery and fixing 100 AC cowl in position on the roof slab with mosquito proof net arrangement and etc.,complete and as directed by Department. (SOR VOL - II) (WD-W0593)

Supply, Delivery and fixing of CI Manhole frame with cover of following size including labour cost of all materials, fixingof MS clamps, Bolt and nuts etc.,complete and as directed by Department.

Supplying, laying, jointing of following DI specials as per IS 9523 : 2000 with DI pipes etc., complete as directed by the Engineers and provision for pipe connection arrangements for inlet, outlet, scour & overflow etc., including cost of pipes, specials, valve, labour charges for lifting, aligning, fixing of DI pipes etc., complete as per detailed specification.

Painting two coats of newly plastered wall surface with ready mixed Cement paint of first quality and of approved colour over a priming coat including preparing the surface, clean removal of dirt and including necessary plaster of paris putty wherever required etc., complete complying with standard specification.( Building Data 2025 -26)

Supply, delivery and fixing of outside MS ladder 30 cm clear wide made out of 50 mm × 50 mm × 6 mm MS angle for sides and steps in 16 mm MS plain rods fixed at 30 cm c/c jointed etc., providing with suitable side supports, clamps, locking arrangements, provided with two coats of enamel paint over one coat of red oxide paint, for providing roof top of suitable length, including bottom anchoring, transportation and as directed by municipal officer

Provision for supply & fixing of MS ladder including painting etc complete for sump outside of vertical height

Refilling the foundation with excavated Soil (other than sand) in layers of not more than 15cm thick, watering, well ramming, consolidating, complying with standard specification and as directed by Department.

Providing and fixing of RCC inner access ladder in 1 : 1.5 : 3 (one cement, one and half sand, three aggregates) using 20 mm HBG stones for OHT including grill in position, shuttering charges, mixing concrete, curing etc., to required height and clear width of 45 cm consisting two nos vertical post of 10 × 15 cm and step slab of 25 × 25 mm complete and as directed by municipal officers.

Supply and delivery of Bore well type submersible pumpsets with following capacity of lpm against Noted head in Metre suitable for erection into the BORE WELLS with stainless steel shaft, bronze impeller and stainer with brass screws, water lubricated bearings and protected from sand. The non return value located at the top of the pump in the discharge outlet connection used to be designed with minimum friction. The pump should be directly coupled to a suitable HP. 2880 RPM, 3 phase, 50 HZ, 380/440 B motor suitable for DOL / Star Delta starters of adequate capacity for continuous operation. The pump should be provided with the minimum length of 20 m suitable size PVC insulated copper flat cable. The pumpset should confirm to IS 8034 and amended thereafter. (page no.138)For Borewells - 10 HP with Duty of 600 Lpm x 40 m Head (6w+1s)

3.0 Core Armoured Aluminium conductor UG cable - 95 sqmm (SOR VOL - II - (WD -M1966) / 3 core

3 Core Armoured Aluminium conductor UG cable - 50 sqmm (SOR VOL - II - (WD -M1964)

3 Core Flat Copper cable - 16 sqmm (SOR VOL - II - (WD -M1978)

3.5 Core 95 sqmm Aluminium conductor cable - (SOR VOL - II - (WD -M 2016)

3 Core 50 sqmm Aluminium conductor cable - (SOR VOL - II - (WD-M1964)

3 Core 16sqmm Copper cable - (SOR VOL - II - (WD -M1978)

3.5 Core 95 sqmm Aluminium conductor cable - (SOR VOL - II - (WD -M 1192) / 3 core

3 Core 50 sqmm Aluminium conductor cable (SOR VOL - II - (WD -M 1190)

Jointing of following sizes as detailed below : 3 Core 16sqmm Copper cable (SOR VOL - II - (WD -M 1987)

Supply and delivery of floor mounting type vermin, weather and dust proof power coated factory made LT Cubical panel board fabricated with 14 SWG MS Sheet & MS angle irn frame work with enclosed Copper / Aluminium Bus bar of Electrolyte grade E.91 PVC sleeved of suitable size for phase and neutral with hinged fron door and railway type lock and key arrangments 4 Nos of PVC colour sleeved aluminium bus bar of ample capacity current carrying capacity with all internal wiring as per IE rules and as per IS 8633 and as per safety requirements of CEIG. The design of of panel should facilitate for quick operation os allswitchjes from the front side. The panel bard should be completed with all internal wiring including necessary twin earthing arrangements and consists of the components for controlling incoming and out going supply at the pump room at Zone-1 area

Supply delivery and erection of LT Metering box for additional supply at HW 60HP - (SOR VOL - II) WD-M2032

Supply and delivery of GI / PVC / HDPE pipes & specials suitable as per relevent IS for erection of Pump sets for Bore wells etc. - For Bore wells (vide Annexure - I)

Supply and Delivery of 65 MS clamp sets for erection of sub pumpset in Bore wells. WD-M0617

Erection commissioning of Bore well / Open well type Submersible pumpsets and accessories as directed by TWAD officers - Bore well type submersible pumpsets 10 HP for borewells - (SOR - WD-0873)

Twin Earthing for pump room as per I E Rules including cost of all materials up to 60 HP - WD- 2036

Electrical gloves tested to 11KV/22KV with wooden box dusted with french chalk powder

Electrical quality 6mm thick rubber mat]

Fire Extinguisher Co2, 4.5 kg. confirming to TAC Norms (SOR - WD-1982)

4 Nos. Fire Buckets Hooked to MS stand made out of 40 x 40 x 6mm MS Angle (SOR - WD-1979)

Shock Treatment Chart fixed in glass frame (SOR - WD-1978)

First Aid Box complete with all First Aid Medicines (SOR - WD-1977)

Rechargable Emergency Lamp (600mm Flouracent lamp)

6" chain wrench best India make (SOR - WD-M2039)

8" Chain wrench best India make (SOR - WD-M2040)

Connector screw driver 901 Taparia make(SOR - WD-M2041)

200 screw Driver 825 Taparia make (SOR - WD-M2042)

300mm screw driver 829 taparia make(SOR - WD-M2043)

400mm screw driver 930 Taparia make (SOR - WD-M2044)

200mm cutting plier taparia make (SOR - WD-M2045)

800gm ball pane hammer with handle taparia make (SOR - WD-M2046)

Hacksawframe with blade (SOR - WD-M2055)

DE spanner set 6 to 32 Jhalani make (SOR - WD-M2059)

Rings spanner set 6 to 32 Jhalani make (SOR - WD-M2060)

Supply deilvery and fixing of Capacitor bank for the following locations - At Well cum pump house at HW

65mm GI Medium as per item. No. 5.0 / page 30 of SoR 2025-26 (IS 1239/PART-I /2004) (SOR - WD-M0490)

65mm GI Coupling (Heavy) (SOR - WD-M0596)

65mm GI flange (Heavy) (SOR - WD-M0597)

65mm GI bend (Heavy) (SOR - WD-M0602)

125mmx65mm GI Reducer (Heavy) (SOR - WD-M0523)

125mm PVC Threaded Coupler (SOR - WD-M0114)

65mm GM Gate valves as per IS 5154 (SOR - WD-M0618)

65mm GM Non Return valves as per IS 5155 (SOR - WD-M0619)

b. 63 Amps MCCB - 3 pole to feed 10HP motors - 6 Nos individually with 1 No of spare Panel Board

e. 63 Amps MCCB - 3 pole for capacitor bank of 20 KVAR

d. 16 Amps MCB - 3 pole to feed lighting loads

Fabrication and fixing charges of the Cubical panel board including cost of all accessories listed above @35% of cost of materials vide sub-total

Supply and delivery of the following sizes of DI pipes as per standard specification - Pumping main - 600mm DI K7 S/S Pipes (SOR VOL -II - WD-M0629)

Supply and delivery DI specials required ( vide separate sheet )600 DI 900 D/S Bend - (SOR VOL -II - WD-M0781)

600 DI 450 D/S Bend - (SOR VOL -II - WD-M0780)

Manufature,Supply and delivery of Tamper proof DI single chamber air release valves with pressure range from PN 1.0 to 2.5 with body and cover made of Ductile Iron of grade GGG 40 conforming to IS 1865 with food Grade Epoxy powder coating ( EP-P) inside and for outside of colour blue RAL 5005.ALL internal parts such as float,shell etc., cover bolts, made of Austenitic allloy steel of SS AISI 304/316. The float for DN50 made of polytetrafluroethylene/ Austentic alloy steel of AISI 304/316. Gaskets and seals of EPDM/ Neoprene rubber - 80mmDI Single Chamber Air Valve for 600 main - (Arriaved Data )

Earth work excavation and depositing on bank with an initial lead of 10m and initial lift of 2m in Hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil - Pumping mains - 600mm DI K7 S/S Pipes - (WD-W0673)

Refilling the excavated earth after the pipes were laid jointed and tested etc. complete. - 600mm DI K7 S/S Pipes (WD-W0673)

Lowering of D.I.Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers. - 600mm DI K7 S/S Pipes (WD-W0255)

Jointing the DI S/S Pipes and specials with rubber gasket (Tyton Joint) (including cost of Jointing materials) - 600mm DI K7 S/S Pipes - (WD-W0318)

Testing of DI S/S pipes as per specification including cost of Tools, materials and labour charges ect completed as per specification - 600mm DI K7 S/S Pipes - (WD-W0470)

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