Kerala Water Authority Tender

4.1.8:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40 nominal size)

5.9.1:Centering and shuttering including strutting, etc. and removal of form for:Foundations, footings, bases of columns, etc for mass concrete

5.22.6:Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

5.1.2:Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level:1:1:5:3 (1 cement 1.5 coarse sand :3 graded stone aggregate 20 mm nominal size

5.9.2:Centering and shuttering including strutting, etc. and removal of form for:Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

4.1.3:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:2:4 (cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size)

OD225579/2023-2024:Supplying, , stacking and spreading Coarse sand (zone III) in side portion of circular beam trenches as per standard norms including cost of all materials.

13.4.1:12 mm cement plaster of mix:1:4 ( 1 cement : 4 coarse sand)

13.46.1:Finishing walls with Acrylic Smooth exterior paint of required shade:New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm)

13.61.1:Painting with synthetic enamel paint of approved brand and manufacture to give an even shade:Two or more coats on new work

OD225580/2023-2024:supply, installation and commissioning of a pre-engineered, pre-fabricated, factory manufactured steel storage Water Tank Zincalume.50000 L. 1. Heavy-duty corrugated Galvalume dome roof with HDG roof trusses and lockable access hatch. 2. "Foundation contact area of Zincalume™ steel sheets will be coated with anti-corrosion paint on both sides to give additional protection." 3. Special quality Dust cum Vermin proof tape between the roof and tank wall. 4. Scour drain assembly through floor of tank. 5. bell mouth over flow with assembly. 6. M 12 HDG nuts and bolts (Grade 4.8 or 8.8) covered internally with re-inforced tape. 7. Trusses, Ladders, Nozzles are Hot dip Galvanized to minimum 610gsm as per IS 2629, 2633. 6745, 4759. 8. Special quality Mechanical Anchor Fasteners. 9. common external/internal ladder - hot dipped galvanized. 10. INFINITY liner manufactured in Japan, re-inforced 5-layered PE liner with METALLOCENE contact layer. ANSI/NSF - 61 certified. 11. External Float and board type Level indicator. 12. One special quality 400gsm Geosynthetic fabric on the base of the tank below the liner. with corrugated section Zincalume steel sheet for the shell<br>in minimum thickness of 0.6 mm, in multiple layers as required for the capacity and height of the tank and<br>multiple-layered PE sheet/membrane for the inner containment liner. The Tank Shell / Body & the Liner<br>material shall be manufactured in a facility certified and compliant to ISO 9001 2000 standards. The<br>Tank shall be supplied with access points, penetrations for inlets, outlets, drains and fittings, overflow and<br>drain, high and low water level indicators.hand rails etc for the satisfactory completion of work. All connections to the tanks shall be with flanged or threaded<br>nozzles, placed to the KWA water mains<br>TANK ROOF<br>The roof of the tank shall be of corrugated Galvalume sheet steel and shall be domed, with heavy- duty<br>Hot-dip Galvanized truss frame for support, and capable of supporting 4-5 persons for maintenance and<br>cleaning and tank shall have an access hatch with cover, on the roof, for operation and Maintenance.<br>TANK COVER<br>Tank covers shall be of approved galvanized vermin proof construction. Roof ends shall be fitted with<br>suitable vermin-proofing tape or other material, to prevent ingress of dust and foreign objects. Covers<br>shall be firmly fixed to the top edge of the tank with galvanized bolts and nuts.<br>LADDERS<br>Tanks shall be provided with Hot-dip Galvanized ladders internally or externally. External roof supports<br>shall be of an appropriately designed Hot-dip galvanized steel construction. Tanks shall comply with<br>relevant spill level, air gap and overflow requirements relative to Effective Capacity. All nuts and bolts<br>used for the panels shall be a minimum of 12mm size and hot-dip galvanized/ Case hardened. minimum 2 mm<br>thickness. Tanks shall be properly flushed out with clean water prior to being brought into service.<br>TANK DIMENSIONS<br>The dimensions of the Tank shall be of 5.50 m in diameter and 2.58 m in height DESIGN LIFE<br>The tanks shall have a design life of 50 years.<br>TANK CONNECTIONS<br>Standard design valve outlet connection : One No. 80 mm CI Flanged valve.<br>ii) Overflow connection including an internal approved bell-mouth shaped bends to maximize the overflow<br>capacity. ? One no. 100 mm.<br>iii) One (1) scour drain outlet from the floor of the tank with isolation valve. One No. 150 mm<br>TANK LINERS<br>Tank liners shall be purpose-designed and manufactured and shall comply to AS/NZS 4020 (Appendix A)<br>of 2005 and ANSI/NSF 61 ? 2008, Section 5 Certificates of compliance to above standards shall be<br>furnished by the manufacturer of the tanks.<br>Tank liners shall:<br>i) Be factory manufactured to one- piece construction, fabricated from multi-layer PE sheet, certified for<br> potable drinking water, to ANSI NSF 61 and duly UV Stabilized.<br>ii) Be of PE (polyethylene) in multi-layer construction for strength, reinforced with woven scrim industrial<br>fabric to prevent elongation and enhance tensile strength.<br>The contact surface shall be of Metallocene layer.<br>iii) The total liner material thickness shall be no less than 0.8 mm thick The tensile strength shall not be less than 2266 N (warp) and 2495 N (weft) and heat sealing strength<br>of 2056 N<br>v) All the liner welded lap joints shall be strengthened with Metallocene encapsulating tape welded over<br>the overlap.<br>vi) The Metallocene tape shall cover and protect the exposed material at the edges of the liner joints to<br>further prevent the ingress of water into the scrim.<br>vii) Liners shall be positively and continuously attached to the top outer edge of the circumference of the<br>tank to prevent entry of water from the runoff from the roof structure.<br>viii) All liners on tanks over 2 m in height shall have a continuous intermediate liner support designed out<br>of nylon (or other material)cord, around the circumference of the tank, at vertical intervals corresponding<br>to the level of each ring.<br>ix) The intermediate liner support cords shall be firmly secured to the steel shell at each level, to prevent<br>stress on the liner welded joints, and thereby eliminate possibility of failure<br>CORROSSION PROTECTION<br>The tank structure shall have a secondary corrosion protection system using sacrificial magnesium<br> anodes. The number of anodes, their location around the tank and the mass of each anode shall be<br>designed for anode replacement frequency of five years.<br>The anodes shall be installed external to the tank and concrete apron with their location marked.

Construction of Valve Chamber

2.6.1:Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including disposal of excavated earth, lead up to 50 m and lift up to 1.5 m, disposed earth to be levelled and neatly dressed.All kinds of soil

4.1.3:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:2:4 (cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size)

5.1.3:Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level:1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

5.9.2:Centering and shuttering including strutting, etc. and removal of form for:Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

5.9.1:Centering and shuttering including strutting, etc. and removal of form for:Foundations, footings, bases of columns, etc for mass concrete

5.22.6:Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

13.7.1:12 mm cement plaster finished with a floating coat of neat cement of mix:1:3 ( 1 cement : 3 fine sand)

OD225581/2023-2024:Supplying and fixing C.I man hole cover with frame for manholes:560 mm diameter ( heavy duty) the weight to be not less than 208 kg.

Supplying.Laying,testing and Commissioning of 100mm Clear Water Pumping main from Mankayam sump to proposed steel tank at vitiikava- WORKING CHARGES

100.59.1:Cutting the bituminous / concrete roads with cutting machine for a minimum depth of 200mm along the sides of proposed alignment of the pipe to be laid without causing any damage to other utilities, including the charges for hire and conveyance of tools and plant, cost of consumables and charges for lighting, watching, ribbon fencing, caution boards, traffic diversion, and as per the direction of departmental officers etc. complete, before carrying out the demolition of bituminous / concrete road by mechanical means and carrying out the excavation.

15.59:Dismantling of flexible pavement ( bituminous courses ) by mechanical means and disposal of dismantled material up to a lead of 1 kilo metre, as per direction of Engineer-in-charge.

15.2.1:Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in-Charge.Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

100.1.1:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

100.1.5:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50 m, in Ordinary Rock.

100.1.13:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in Hard Rock where Blasting is Prohibited.

100.8.1:Fencing one side of trenches, 1.50m height with two rows of 10cm plastic caution tape in vertical casuarina pole (girth 15cm to 24cm) fixed at 2m intervals.

100.14.1:Conveying and laying S&S Centrifugally Cast (Spun) / Ductile Iron Pipes conforming to IS: 8329 excluding cost of pipes and specials: 100mm diameter Ductile Iron Class K-9 Pipes.

18.70.1:Providing push - on-joints to Centrifugally (Spun) Cast Iron Pipes or Ductile Iron Pipes including testing of joints and including the cost of rubber gasket:100 mm dia pipes

18.30.2:Providing flanged joints to double flanged C.I./ D.I pipes and specials, including testing of joints:100 mm diameter pipe

18.83.2:Labour for cutting C.I. pipe with steel saw.100 mm diameter C.I. pipe

100.35.1:Testing 100mm DI/CI pipeline with potable water to the required test pressure 100 mm dia

100.31.1.2:Conveying and fixing C.I. sluice valves (with cap) by providing bolts, nuts, rubber insertions etc., complete, but excluding the cost of the valve (tail pieces, if required, will be paid separately): 100mm diameter, Class I.

100.32.1:Conveying and fixing C. I. Single Acting Air Valve of approved quality with bolts, nuts, rubber insertions etc., complete, but excluding the cost of air valve (tail pieces, if required, will be paid separately): 25mm Single Acting Air Valve.

4.1.4:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:2:4 )1 cement : 2 coarse sand : 4 graded stone aggregate 40 mm nominal size)

Construction of anchor blocks

2.6.1:Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including disposal of excavated earth, lead up to 50 m and lift up to 1.5 m, disposed earth to be levelled and neatly dressed.All kinds of soil

5.1.2:Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level:1:1:5:3 (1 cement 1.5 coarse sand :3 graded stone aggregate 20 mm nominal size

5.9.1:Centering and shuttering including strutting, etc. and removal of form for:Foundations, footings, bases of columns, etc for mass concrete

5.22.6:Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

cost of pipes and specials

100.98.115:Supply of DI K9 Pipe Conforming to IS 8329/2000, 100mm Dia.

18.72.15:Providing and laying S & S Centrifugally Cast (Spun) / Ductile Iron Pipes conforming to IS : 8329:100 mm dia Ductile Iron Class K - 9 pipes

100.98.440:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Single Orifice, Small Orifice Type S1, Size 25mm.

100.98.458:Supply of CI Double Flanged Sluice Valve Conforming to IS 14846 - 2000, Sluice Valve with Cap PN 1.6, Size 100mm.

OD225584/2023-2024:Ductile Iron K-12 specials suitable for push on jointing upto 600 mm dia

OD225585/2023-2024:Ductile Iron specials suitable for mechanical jointing as per I.S. 9523 upto 600 mm dia

Supply,Erection,Testing and Commissioning of Clear Water Pump Set for sump at mankayam to vittikavu colony

OD225582/2023-2024:Supplying and fitting 100 mm an Electra-Magnetic Flow Meter confirming to protection level of IP-68 for flow sensor and IP-67 for transmitter and having an accuracy level of 0.5% with LED/LCD display unit. The flow meter should have the (flow sensor) to be made of SS 304/Carbon Steel with anti corrosive protection and inside liner to be made up of Hard rubber/neoprene all confirming to drinking water standards. The flow meter should be coupled with HART for data acquisition and transfer, with provision for wireless transfer through GSM. The manufacturers should have the calibration standards as per ISO 17025 and the product shall have sufficient warranty provisions and including insulation charges with required fittings etc complete.Test certificate from FCRI palakkad.

OD225583/2023-2024:Design, Supply , erection, testing, Trial run and commissioning of CF pump set with the following specification - 1. Pump - Supply, erection, testing and commissioning of KWA pre-qualified reputed make centrifugal pump sets with Bronze/SS impeller, SS shaft and CI pump casing with suitable types base plate with coupling, coupling guard, foundation bolts and nuts etc. complete including providing suitable concrete foundation including cost of material etc. complete. as per CEA regulation 2010 and present code of practice for discharge 3.47 lps on 4 (avg) hours pumping against actual head (92 m ) including 1 as stand by including cost of all required protection equipment with an efficiency not less than 75%, Suction head &ndash; positive suction, 2. Motor Supply, erection, testing and commissioning of KWA prequalified reputed make horizontal solid shaft foot mounted TEFC squirrel cage induction motor suitable for the above pump working on 3 phase 50 Hz Ac supply, working voltage 415V/3300 V(select suitable), 1500rpm. The motor shall confirm to Latest IE standards, including providing suitable concrete foundation, including cost of materials etc. complete for 3300 V motors digital motor protection. Relay shall be included in starter as per present IE rules. . Flexible coupling shall be used for coupling of pumps and motors 3. Starter. Supply erection testing and commissioning of suitable rating (Fully automatic starter with air break contact for less than 100 HP and for above 100 HP FCMA starter to be used) . Here soft starter to be provided. Starter suitable for the above motor with over voltage and under voltage protection, single phase preventor, overload relay with motor protection relay with main contactor and bye pass contactor as per IE rules and code of practice etc complete 4. Panel board - Supply , erection, testing and commissioning of cubical type wall mounted MS fabricated dust and vermin proof common control panel board consisting of 1 No. suitable capacity motor protection MCCB as incomer and and No of suitable capacity MCCB as outgoing providing suitable size Aluminium bus bar to interconnect the above MCCBs and fitted with 3 Nos of indicator lamps,1 no. volt meter with selector switch ,1 no. Ammeter with selector switch for measuring current in each phase etc. complete and provided with a common earth bus for the entire panel and inter connect with the MCCBs as per IE rules and code of practice. The panel shall be fitted on a common base frame on suitable foundation. 5. Cabling work - Supply, laying testing and commissioning of suitable size XLPE copper cables for the above pump set from panel board to starter and from starter to motor considering energy conservation for a total length of 10 M. 6. Earthing - Supply of all materials and providing suitable earthing by using suitable size pipe /plate earthing GI/copper strip buried in ground and giving double earthing to motor, starter, panel board etc. as per IE standards. 7. Capacitor - Supply, erection testing and commissioning of heavy duty APP capacitor for the motor to get a power factor above 0.95. Capacitor should be connected to external contactor, and the capacitor shall confirm to IS 2834 8.Valves and Pressure gauges &ndash; Supply, Erection and commissioning of suitable size best quality heavy duty ISI marked CI double flanged Sluice Valve electrical actuator (capable of operating in Fully, Semiautomatic modes and also in manual mode), Non Return Valve and Pressure Gauges with suitable Pressure rating. Fitting of valves shall include proper RCC support. In case of positive suction pipes set sluice valve should be in suction as well as delivery sides for easy repair works. 9. Suction and delivery pipe connection - Supply and fitting of suitable size best quality MS pipe of shell thickness not less than 10 mm for a total of 10 m. suitable for the above pump set and suitable size foot valve and connecting the suction pipe and valve with suitable flanges, nut and bolts IR sheet etc complete and connecting the delivery side of thr pump with the valves and suitable specials to connect the pumping main. If the dia of suction pipe is above 80 mm CI pipes and specials shall be provided. Efficiency of pumpset shall not be less than 75 %. The guarantee period is minimum two years with full replacement of above mentioned units . As per the order no. 9710/ae 15/2021/kwa dtd 8-2-2023.