Construction of Sump with Pump Room and Storm Water Drain near Bharathi Nagar OHT in West Zone Ward No 17

Earth work Open excavation by Mechanical Means for Open Earthwork in all soils and sub-soils and 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.

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

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).

For Vertical Centering

For Sump Slab & Beam

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)

Providing and laying in position, standardised concrete Mix M-20 Grade by insitu machine mix concrete adopting weighing batch method in accordance with IS 456 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 325 kg/m3 and maximum water cement ratio of 0.55, including admixture (plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without inspiring strength and durability with about (5 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 ofreinforcement 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).

Foundation and Basement

Supplying and fixing in position SRFC Manhole covers size (light or heavy duty) of 60 X 60cm in sCement Mortar 1:3 (One part of Cement and Three part of Plastering Sand (PSand)), of best approved quality and as per standard specifications etc.,complete.

Brick work in following Cement Mortar using best quality Burnt Clay Brick of size 8 3/4” x 4 1/4” 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.

Plastering with Cement Mortar 1:5 (One cement and Five 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.

Supplying and fixing Mild Steel grills for windows, ventilators etc.,complete complying with standard specifications and as directed by the departmental officers.

Painting New Plastered Wall Surface with Two finishing coats of ready mixed (Emulsion) of approved quality and colour over one coat priming coat in all floors including the cost of primer etc., complete complying with standard specification and as directed by the departmental officers.(The make, quality and colour of paint should be got approved by the Executive Engineer before use on works.)

Painting new iron works such as steel doors, windows, ventilators, window bars, balustrades etc., with two coats of best approved first quality and colour of synthetic enamel paint over the existing red oxide priming coat in all floors excluding cost of priming coat etc., complete complying with standard specification and as directed by the departmental officers. (The make, quality and colour of paint should be got approved by the Executive Engineer before use on works.)

Wiring with 2x1.5 sq.mm. PVC insulated SC unsheathed FRLS copper conductor of 1100V grade insuitable PVC rigid pipe concealed in wall and ceiling with PVC accessoires in flush with wall with 3 mm thick hylum sheet cover with TW switch box and 5AFT switch and making good of the concealed portion with suitable colour for PVC concealed light/fan Point (for electronic regulator) (5 points per coil) SD 25

Wiring with 2x4sq.mm. PVC insulated SC unsheathed FRLS copper conductor cable of 1100V grade insuitable PVC rigid pipe concealed in wall and ceiling with PVC accessories in flush with wall with150mm x 100mm x 113mm TW switch box with 3mm thick hylem sheet for15A3 pinnon inter locking wall socket with15A flush types witch with continuous earth wire connection of 4sq.mm copper wire and making good of the concealed portion with suitable colour for concealed power plug point SD 40

Supply and fixing of TNEB meter board suitable for 32A three phase service connection with 3 Nos. 32A fuse unit (500V) 32A neutral link and earthlink (1"x1/8"copper flat) on TW plank of size 600mmx450mmx19mm with supporting TW reepers of 1" thick an either side with painting with suitable bolt and nuts for fixing the TW plank on wall with earth connection and inter connection with 7/20 PVC insulated copper wire from EB meter to fuse unit with 1No 40Amp 30 MA Four Pole RCD / RCCB (Higher End) with suitable necessary connection

Supply and fixing of 63A TPNMC switch with suitable angle iron framework with MS cable entry boxes with earth connection only

Supply and run of 4x6sq.mm. PVC insulated SC unsheathed FRLS copper conductor of 1100V grade in 32mm dia GI pipe (Class 'B') suitably bent at both ends with necessary angle iron up right and end supports for mains

Supply and fixing of single box type 4'36W fluorescent fitting complete with electronic ball as t with TW round blocks on wall or ceiling with flu tube with PVC unsheathed FRLS Copper leads from terminals to the fitting

Supply and delivery of submersible centrifugal sewage non-clog pumps, vertical spindle type pump, wear resistance with submersible motor for the various duty conditions. Pump shall be capable of handling min 100 mm solid size with sewage specific gravity of up to 1.05. Pump shall be of robust construction, Liquid passages shall be finished smooth and designed as to allow free passage to solids. Pump Impeller should be of Non-clog semi open type, single vane / multi vane preferably contra bloc or vortex impeller design. Double mechanical seal with silicon carbide faces should be provided to protect the motor from ingress of sewage along the shaft. The critical speed of the rotor shall be at least 30% above the operating speed. Pumps should have double bearings between the pump & motor. The bearings life shall be minimum 100,000 hrs of operation with greased for life. Pump should be provided with automatic coupling device including pedestal, duck foot bend, stainless steel guide pipe or related accessories of suitable size to facilitate lifting and lowering into guide rails for easy maintenance. Pump shall be provided with a stainless steel lifting chain conforming to BS 970 Gr 304. Pump speed shall be of 9600 rpm for high duty pumps and 960/1450 rpm for low duty pumpsets. Casing and impeller should be of CI Gr. FG 260:IS210 more preferably with hardened impeller.Shaft should be of stainless steel AISI 410. All the fasteners and bolts shall be of AISI 410.The submersible motor shall be operated with 3ph, 415 V (+or– 10%), 50Hz (+or-5 %) dry induction type. Motor shall be capable of giving rated output without reduction in the expected life span when operated continuously. The rotating assembly shall be dynamically balanced as per standards. The starting current of the motor shall not exceed 200% of rated full load current for Star / Delta or ATS starting under any circumstances .The motor shall be suitable for full voltage star delta / ATS starting. The locked rotor current of the motor shall not exceed 600% of full load current unless otherwise specified. Motor shall be designed to withstand 120% of rated speed for two minutes without any mechanical damage, in either direction of rotation. The motor vibration shall be within the limit specified in applicable standards. Motor should be of IE2, explosion proof compatible for VFD operation together with star-Delta /ATS starter, protection against increase in stator winding temperature (15 deg Celsius), bearing temperature, leakage in the stator housing and terminal box shall be provided and to be suitably interlocked with the control panel for tripping the pump in case of increase in temperature beyond set limit.

Supply and delivery of HDPE PIPES - PE 100 AS PER IS 4984/2016 PN 6 the rate includes all cost and conveyence labour charges etc complete 160mm dia

Supply delivery of specials for HDPE PIPES AS PER IS 8360/1977/Part I(Reaffirmed 1992) Part II and III (Reaffirmed 2002) PN 6 the rate includes all cost and conveyence labour charges etc complete160mm dia Bend

Earth work exacavtion for pipe lie trenches with proper gradient without damaged to the water pipe line the rate includes all cost and conveyence labour charges etc complete

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 (part2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per directed by TWAD Board Officers.

Lowering 160mm dia HDPE pipes and specials to trench and laying to proper grade and alignment and as directed by the TWAD Officers

Refilling for for pipe lie trenches after laying the pipe laying without damaged to the water pipe line the rate includes all cost and conveyence labour charges etc complete

Supply and delivery of DUCTILE IRON CLASS PN10 FLANGED PIPES AS PER IS 8329/2000 the rate includes all cost and conveyence labour charges etc complete

1 m length of pipe

2.5m length of pipe

3m length of pipe

Supply and delivery of DUCTILE IRON SPECIALS AS PER IS 9523/2000 all flange, the rate includes all cost and conveyence labour charges etc complete

Supply and delivery of DI D/F Gate (sluice) valves (soft seated) resilient seated soft sealing Gate Valves (Sluice Valves) with body Bonnet of Ductile cast iron of Grade GGG 40 or GGG 50, 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 14846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and outside with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 and with 5 years warranty -100mm dia

Manufacture, supply and delivery of DI D/F Slanted seat Tilting Disc Swing Check Valve in single piece body and closed eye disc construction. Hemispherical disc with 59 degree inclination for fast open and closing. Corrosion proof and wear resistent(triple offset) disc face & body seat face, both made of fusion bonded Nickel Chromium weld overlay and microfinished. Body and disc of ductile cast iron GGG-40 or GGG-50, medium free (dry) shafts of stainless steel and bearings of Zinc-free Bronze, Valve should have provision for internal damping unit for reducing the effects of water hammer/surge, if required at later stage. Electrostatic epoxy powder/liquid coating (EP-P) inside and outside color blue RAL 5005 with minimum coating thickness of 150 microns. The EPDM rubber & Epoxy Powder should be approved by W 270.(EP-P it is a resicoat powder approved for drinking water application, applied through fusion bonding technology process by dipping the shot-blasted casted components heated upto 200deg C). Face to face dimensions as per EN 558-1 series 14 and flange connections as per EN 1092-2/IS and with 5 years warranty -200mm dia

Supply and delivery of MS BOLTS AND NUTS 20mm dia and above x 90mm to 120mm length fully threaded bolts and with nuts 2 Nos.

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