Integration of Lamella Clarifier for improved Water Treatment Plant

Earth work Open excavation by Mechanical Means for Open Earthwork in all soils and subsoilsand to full depth as may be directed except in rock requiring blasting inclusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental officers with an initial lead of 100 mts and clearing and levelling including dressing of sides and raming of bottoms etc., complete complying with standard specification and as directed by the departmental officers.

(0 - 2m Depth) First Depth

(2 - 3m Depth) 2nd Depth

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

Refilling with excavated earth other than crushed stone sand with an initial head load of 100 mts. and depositing the earth as shown by the departmental officers in layers of not more than 15 cm thick well rammed, watered and consolidated etc. complete complying with standard specification.

Removal of Excavated Excess Earth away from the site to 5K.M including loading and transportation charges etc, complete as per standard specification. For 1M3

Centering

Supplying and erecting centering for plane surfaces such as RCC Floor/Roof Beam, Lintels, Cantilever Beams, Bed Blocks etc.. with necessary supports and strutting upto 3.60m height in all floors with all cross bracings using MS Sheets made of 10 gauge thick welded with MS angle of Size 25mm x 25mm x 3mm for boarding laid over Steel adjustable Span of Size 2m x 2m(expandable upto 3.60m) and Silver Oak Joists of Size 10 x 5 cm spaced at 50cm to 60cm c/c and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick) Spaced at not more than 50 to 60cm c/c , etc complete complying with standard specifications. Steel adjustable span and Steel Adjustable telescopic props shall be provided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid).

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, Sill slabs etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid with silver oak joists of size 10cm x 5cm & 7.5cm x 5cm as support runner , vertical stiffener, side support and Top Horizontal stiffener spaced at about 60cm to 90cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation. (Payment for centering shall be given after the concrete is laid).

Supplying and erecting steel centering including necessary supports For plane surfaces such as rectangular or square RCC columns etc. which require only nominal strutting using mild steel sheets made of 10 gauge thick welded with MS angle size 40mm x 40mm x 5 mm and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick).etc..complete in all floors complying with standard specifcation. Steel Adjustable telescopic props shall be rovided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid).

Supplying and erecting centering for plane surfaces such as RCC Floor Slab, Roof Slab, Loft, Landing Slabs, etc with necessary supports and strutting upto 3.60m height in all floors with all cross bracings using MS Sheets made of 10 gauge thick welded with MS angle of Size 25mm x 25mm x 3mm for boarding laid over steel adjustable span of size 2m x 2m (expandable upto 3.60m) and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick) , etc complete complying with standard specifications. Steel adjustable span and Steel Adjustable telescopic props shall be provided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid).

Providing and laying in position, Standardised Concrete Mix M-25 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 350 kglm3 and maximum water cement ratio of 0.50, 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).

Upto basement

Ground floor

Vibrated Reinforced Cement Concrete M30 (Design mix) using 20 mm ISS HBG graded metal including cost and conveyance of all materials to site and cement at site excluding cost and fabrication of steel but form work and centering soft water labour charges for mixing, transporting, placing in position, vibrating and compacting finishing and curing concrete, working at heights, hire charges for Hire charges for Tools and plants, including all other incidental charges, etc., complete as per standard specifications for Bottm Slab

Dividing Chamber

Lamella Clarifier

Sludge Recovering tank

Vibrated Reinforced Cement Concrete M30 (Design mix) using 20 mm ISS HBG graded metal including cost and conveyance of all materials to site and cement at site excluding cost and fabrication of steel but form work and centering soft water labour charges for mixing, transporting, placing in position, vibrating and compacting finishing and curing concrete, working at heights, hire charges for Hire charges for Tools and plants, including all other incidental charges, etc., complete as per standard specifications for SIDE WALL

Dividing Chamber

Lamella Clarifier

Sludge Recovering tank

Supplying, fabricating and placing in position Mild Steel / Ribbed Tor Steel reinforcement grills of all variety like HYSD/CTD/TMTand all grade like Fe 500, Fe550D, Fe 500 D etc., for all RCC works as per design given including cost of steel reinforcement and G.I. binding wire, wastage etc. complete complying with standard specification and as directed by the departmental officers.(Contractor has to make his own arrangements for the supply of steel reinforcement and binding wire)

Brick work in following Cement Mortar 1:5 using best quality Burnt Clay Brick of size 9” x 4 3/8” x 2 3/4” with class designation of 7.5 conforming to IS 1077-1992 for foundation and basement including Cost of Mortar Plasticizer curing, etc.,complete complying with standard specification and as directed by the departmental officers. Brickwork shall be done as per IS 2212-1991 adopting English Bond generally.other type of bond shall be done as directed by the Executive Engineer in charge.

Substructure

Super structure

Plastering the surface of walls with Cement Mortar 1:3 (One cement and Three plastering sand), 12mm thick in all floors including mortar plasticizer at 200ml per 50Kg of cement used, curing etc., complete complying with standard specification and as directed by the departmental officers.

Plastering the surface of walls with Cement Mortar 1:5 (One cement and Five plastering sand), 12mm thick in all floors including curing etc., complete complying with standard specification and as directed by the departmental officers. (Internal wall)

Plastering the surface of walls with Cement Mortar 1:4 (One cement and Four plastering sand), 20mm thick in all floorswith water proofing compound including curing etc., complete complying with standard specification and as directed by the departmental officers. (External)

Painting

Painting two coats of newly plastered wall surface with ready mixed plastic emulsion paint of first class quality and of approved colour over a priming coat including thorough scrapping, clean removal of dirt, and including necessary plaster of paris putty, wherever required etc., complete complying with standard specification and as directed by the departmental officers.

Painting the wall two coats with approved weather proof Exterior Emulsion paint over one primer coat on cement plastered wall surface ect., complete complying with standard specification and as directed by the departmental officers.

Joinery

Supplying and Erecting Pull and Push Type Rolling Shutter with ISI make of approved size and section using 18 GI sheet. The shutter shall be painted with one coat of red oxide primer and the rate is inclusive of hood covers, transportation charges etc ROLLING SHUTTERS (WITH ISI MONOGRAM). Manually Operated (up to 8 sqm. Area)

UPVC Window Specification: 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 125GSM 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 Espag 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 colour 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

IPS Flooring: Providing and laying IPS (Indian Patent Stone) flooring of average 50 mm thick in panels of approx. 2 m × 2 m with cement concrete mix 1:2:4, including base preparation, glass/PVC joint strips, finishing, curing, cleaning etc. complete as per drawings and specifications.

Terrace waterproofing + tiling

Providing and Applying CFTRI approved two component flexible polymer modified acrylic cementitious waterproofing coating with a mix ratio of (5 Liquid :7 Powder) to the RCC surface like Roof, bathroom, toilet, balcony & utility area applied @ 2.2kg/m2 in 2 coats to achieve 1.2mm DFT, having Elongation at break >120% as per ASTM D 412, Tensile strength >1N/ mm2 as per ASTM D 412, Adhesion strength: 0.80N/mm2 as per ASTM D 4541, crack bridging upto 2mm as per ASTM C 836. The finished cost to include surface preparation, making coving of 50 mm X 50mm at all right angles of wall Junction with Polymer Repair Mortar and lay 45 gsm glass fibre mesh over the angle fillet when the first coat in still wet, treatment of cracks completely as per specification.

Weathering course in brick jelly lime concrete using broken brick jelly of size 20mm uniform gauge in pure slaked lime (no crushed stone 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.

Finishing the top of roof with one course of machine pressed tiles of size 200 mm x 200 mm x 16 mm to 18 mm of approved quality in Cement Mortar 1:3 (One part of Cement and Three part of Plastering Sand (P- 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

Design, supply, fabrication, erection, fixing, testing and commissioning of Lamella Clarifier Internals for a 5.0 m × 5.0 m clear RCC tank, complete in all respects, comprising the following: Providing FRP / PVC lamella plates of size 2.4 m × 1.2 m × 5 mm thickness, arranged at the required inclination, including all spacers, clamps, fasteners and accessories; providing and fixing structural supports fabricated out of ISMC 100 sections, duly cut, welded, erected and provided with FRP lining / approved anti-corrosive coating, complete with anchor fasteners; providing and fixing Stainless Steel (SS 304) V-notch launder plates, laser cut and accurately aligned for uniform overflow; providing and fixing Cast Iron sluice valves of 150 mm diameter for sludge withdrawal including necessary fittings; providing and laying 150 mm diameter Cast Iron pipes for sludge withdrawal lines including jointing and connections; providing and fixing Mild Steel step ladder of 1000 mm width with anti-skid steps and handhold; providing and fixing Mild Steel hand railing of 32 mm diameter, 1.0 m height with vertical posts at 1.5 m c/c spacing; providing all bolts, nuts, washers, clamps, anchor fasteners and miscellaneous fittings; carrying out surface preparation and painting to all mild steel works with one coat of primer and two coats of approved enamel paint; including erection, alignment, fixing, testing and commissioning of the complete lamella clarifier system inside the RCC tank.

STP/WTP (Inside) waterproofing with Anticorrosive & Protective Coating - Providing and Applying two component flexible polymer modified acrylic cementitious waterproofing coating with a mix ratio of (5 Liquid :7 Powder) to the RCC surface of the STP/WTP tank applied @ 2.2kg/m2 in 2 coats to achieve 1.2mm DFT, having Elongation at break >120% as per ASTM D 412, Tensile strength>1N/ mm2 as per ASTM D 412, Adhesion strength: 0.80N/mm2 as per ASTM D 4541, crack bridging upto 2mm as per ASTM C 836. The finished cost to include surface preparation, making coving of 50 mm X 50mm at all right angles of wall Junction with Polymer Repair Mortar and lay 45 gsm glass fibre mesh over the angle fillet when the first coat in still wet, treatment of cracks completely as per specification. Followed by applying 15 mm thick dimensionally stable fibrous reinforced cementitious structural grade dual shrinkage Polymer Mortar on as protective plastering @ 29kg/m2. The material having Compressive strength of 38 MPa at 28 days as per EN 12190, Adhesive Bond Test, >1.5 Mpa as per EN 1542, followed by Water curing by sprinkling water for 3 times a day for 5- 7 days. followed by applying two component coal tar epoxy-based coating on inside surface of Sewage & Effluent treatment tank @ 0.30 kg/ m2 in 2 coats to achieve a DFT of 200 microns when fully cured. Ensure that this coating is applied over the protective plaster. The material shall have Scratch resistance, for 7kg load as per ASTM : D 7027 - 05, Chemical resistance, immersion in dilute acid alkali & salt solutions – 7 days confirms to ASTM : C 868, Salt Spray resistance confirms to ASTM : B 117.

Underground structures waterproofing with HDPE membrane - Providing and laying water proofing treatment to the Rafts, below grade slab, Lift pits, water retaining structures with fully bonded 1.5 mm thick HDPE waterproofing pressure sensitive adhesive membrane over PCC before laying raft concrete having higher puncture resistance of 1000N as per ASTM E 154, confirming to BS 8102 & IS 16471:2017, requirements of UG waterproofing structures. Laying adjacent sheets by keeping overlap of 75mm, end overlaps to be treated using double sided tape. The membrane shall have Tensile strength >25 Mpa as per ASTM D 412, Elongation > 500% as per ASTM D 412, Hydrostatic head resistance >70m head of water as per ASTM D 5385, Low Temperature Flexibility: -25 deg C, Peel Adhesion to Concrete >880 N/m as per ASTM D 903 Modified, UV Exposure > 45 Days. The finished cost including surface preparation completely as per specification - base

Supply and delivery of ductile iron restrained joint pipes (K9) as per IS 8329/2000 (Restrained joints are designed & tested as per ISO 10804) with all accessories i.e, required number of locking bars/ plates with EPDM rubber spacers, 1 No. Of EPDM rubber gasket confirming to IS 5382-1985/8329 2000 with latest amendments for each restrained joint socket end. TWAD SOR2025-26 PG 47

150mm dia DI pipe

100mm dia DI pipe

Lowering of D.I Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers. TWAD SOR 2025-26 PG 180

150mm dia DI pipe

100mm dia DI pipe

Jointing the C.I/ D.I - S/S pipes and specials with molten lead and Yarn including caulking the joints. (Including cost of jointing materials) TWAD SOR 2025-26 PG 183

150mm dia DI pipe

100mm dia DI pipe

Testing of pipes for water supply with hydraulic testing equipment by filling with water (including cost of water) and testing to recommended pressure in convenient stretches and attending the bursts if any occured during the test, excluding the cost of pipes but including other incidential and operational charges etc., complete for the following diametres of pipes. TWAD SOR 2025-26 PG 194

150mm dia DI pipe

100mm dia DI pipe

Cutting C.I./D.I Pipes true to axis and filing smoothly and finishing the ends complete TWAD SOR 2025-26 PG 194

150mm dia DI pipe

100mm dia DI pipe

Butterfly valve : Manufacturing, supply and delivery of resilient seated wafer type butterfly valve in accordance with EN 593, centric disk mounted in three maintenance-free bearing bushes, tight in both flow directions, Replaceable rubber sleeve with integrated seal for functionally reliable use for flared flanges, welding flanges, PE flanges as well as loose flanges with V-collar, Stable seat due to collar with vulcanized support ring. Vaccum tight upto 1 Torr. Face to face length acc.to 558-1, basic series 20 (DIN 3202/k1). With Electrostatic epoxy powder coating (EP- P) inside and outside color blue RAL 5005 with minimum coating thickness of 250 microns. The EPDM rubber & Epoxy Powder should be approved by W270. (EP-P, it is resi-coat powder approved for drinking water application, applied through fusion bonding technology process by dipping the shot-blasted casted components heated upto 200 deg C) and with 5 years warranty

150 mm dia (TN-2024-25 V-II WD-M1233, P.No-69)

Supply and fixing of 10.0 HP Submersible Pump including fixing of 3 phase panel board and labour charge.

Supply and fixing of Nylong Rope for the installation of Submersible Pump

Supply and fixing of UPVC Pipe (Un-Plasticized Polyvinyl Chloride) 100mm dia UPVC used for commercial applications operate and designed to handle higher water pressure (Schedule - 80)

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