Civil and Electrical Works for Rehabilitation of Koyna Dam

Amount

Sub Estimate A

Repair works for koyna stilling basin

Item No.1 : Dewatering by pumping out water collected with Diesel or Electrical pumps including cost of all materials, machinery, labour, providing sump and all other ancillary operations whenever necessary etc. complete under specific and indispensable circumstances with prior approval from competent authority with authentic evidence of records justifying dewatering etc. complete as directed including transportation of pumps and all neccessary actions etc.

Item No.2 :Removing wet silt from canal bed with 2.00 km Lead and all lift including depositing the excavated stuff etc.Complete as directed

Item No.3: Dismantling R.C.C.works and removing the stuff to a distance of 2.00 km and all lifts including stacking etc. complete as directed.

Item No.4: Providing and fixing 25mm diameter steel anchor dowel in hard rock including drilling hole of 32 mm diameter up to 0.75 mtrs depth, placing the dowel in position and effectively grouting the hole with CM 1:1 proportion including 22 km lead and all lifts etc. complete.

Item No.5: Providing and applying epoxy bonding agent for bonding old to new concrete for structural members prior applying the epoxy mortar to the concrete surfaces etc complete.

Item No.6 : Providing and fixing in position TMT-FE-500 bar reinforcement of various diameters for R.C.C. pile caps, footings, foundations, slabs, beams columns, canopies, staircase, newels, chajjas, lintels pardis, copings, fins, arches etc. as per detailed designs, drawings and schedules. including cutting, bending, hooking the bars, binding with wires or tack welding and supporting as required complete as directed.

Item No.7 : Providing and laying in situ cement concrete of High grade Silica based M-60 of trap / granite / gneiss / quartzite / graded metal for RCC works of gallery, sluice, spillway crest, spillway down stream face, energy dissipating structures, intake structures, training walls, piers, abutements, slab etc. with Batching Plant and Transit mixer including centering shuttering, scaffolding, placing, compacting, curing etc. complete with all lifts etc. complete as directed.

Item No.8 : Excavation for deep trenches for laying rising main in Hard murum, soft bhisa, Hard man and boulder including trimming to correct line and level and to specified width, including removing the excavated material and stacking or spreading the same upto a distance of 1 km and all lifts as directed, preparing the bed for foundation and necessary safety precautions, keep the trench undisturbed till pipe laying & fixing necessary specials etc complete as per detailed specifications.

Item No.9 :Providing 600 mm dia R.C.C. pipe of NP2 class conforming to IS 458-2003 offollowing diameter including cost of all material and labour required, inspection charges, transportation to stores, transit insurance, loading, unloading and stacking excluding GST levied by GOI and GOM in all respect etc. complete as Directed

Item No.10 :Laying and jointing 600 mm dia R.C.C. pipe of NP2 class or IRC standard in C.M.1:2, proportion by volume including cost of all materials (excluding pipes and collars), labour, aligning pipes, batching and mixing mortar, packing joints with hemp and mortar, finishing, curing etc. complete with all lifts as directed.

Item No.11: Providing and constructing Brick Masonry Inspection Chamber 90cmx45cmx90cm including 1:4:8 cement concrete foundation 1:2:4 cement concrete channel shalf round G.S.W. pipes, Brick Masonry, plastering from inside and C.I. lid cover of 75 Kilogram with lid and frame fixed in cement concrete.

Sub Estimate B

Epoxy Mortar to joints of Koyna Dam.

Item No13 : Underwater inspection cum videograph shall be arranged by divers to inspect from the cavity of well foundation (for monolith joint of dam) and mapping ofthecavity. A) Before rectification work

Item No14 : Providing & applying of Epoxy Mortar layers to Monolith joint of Masonry Dam with all lift etc. complete as directed. (Mouth Sealing- Above Water)

Item No15 : Underwater Crack Sealing/ Filling using underwater Epoxy mortar: Underwater Epoxy putty shall be mixed using the slow speed heavy duty mixing machine to obtain a uniform mix. The mixed materials shall be placed all along the prepared "V" groove and finished smoothly using the putty blade/ trowel within 30 minutes by using the divers. The finished surface shall be allowed for curing minimum of 24 hours to attain the strength. The item includes the cost all materials, hire charges for all machineries and all charges for divers with accessories etc., complete. Make - Material of reputed manufacturer. (Mouth Sealing- Under Water)

Item No16 : Remove loose, disintegrated and porous concrete at cracks and joints,Repair the same with epoxy or polymer modified mortar. Drill injecting holes to a depth of 2-4 inches in the concrete depending upon width of cracks, extent of damage and dimension of structural elements. Fix the grouting nozzles. Clean all loose dust particles from the cracks and holes by blowing compressed air through all the nozzles in succession. Mix and place Polyurethane Based Leakage Sealing Grouting as approved by Engineer in charge. Mix one batch at a time using a bucket and drill connected to a stirrer. Polyurethane Based Leakage Sealing Grouting by using PU Foam Grout should have following minimum properties: 1. Viscosity @ 25°C: 1300 ± 400 cps 2. Specific Gravity: 1.16± 0.05 ,It shall be applied as per manufacturer’s specification. Specifications of Grouting PU Foam material shall be get approved from Engineer in charge before execution of work. Including crane services (Epoxy Grout- Above Water)

Item No17 : Remove loose, disintegrated and porous concrete at cracks and joints,Repair the same with epoxy or polymer modified mortar. Drill injecting holes to a depth of 2-4 inches in the concrete depending upon width of cracks, extent of damage and dimension of structural elements. Fix the grouting nozzles. Clean all loose dust particles from the cracks and holes by blowing compressed air through all the nozzles in succession. Mix and place Polyurethane Based Leakage Sealing Grouting as approved by Engineer in charge. Mix one batch at a time using a bucket and drill connected to a stirrer. Polyurethane Based Leakage Sealing Grouting by using PU Foam Grout should have following minimum properties: 1.Viscosity @ 25°C: 1300 ± 400 cps 2.Specific Gravity: 1.16± 0.05 ,It shall be applied as per manufacturer’s specification. (Epoxy Grout - Under water)

Item No18 : Providing and fixing P.V.C. water stopper,310 mm wide central bulb type to the vertical joints of monoliths to above water as directed by engineer in charge etc. complete.(Joint Sealing- Above Water).

Item No19 : Providing and fixing P.V.C. water stopper,310 mm wide central bulb type to the vertical joints of monoliths to Under water as directed by engineer in charge etc. complete.(Joint Sealing- Under Water)

Item No 20 : Underwater inspection cum videograph shall be arranged by divers to inspect from the cavity of well foundation (for monolith joint of dam) and mapping of the cavity

Sub Estimate C

Anti skid walkways in galleries and stairs.

Item No21 : Removing cement tiles, or marble or polished shahabad floor or dado without bed concrete including stacking the materials as directed with all leads, lifts etc. complete.

Item No22 : Providing and laying chequered tiles of approved quality of size 30cm x 30 cm, confirming to corresponding I.S. for flooring in required position laid on a bed of 1:4 cement mortar including cement float, filling joint with cement slurry cleaning curing etc. complete.

Item No23 : Providing and applying two coats of exterior acraylic emulsion paint confirming to corresponding I.S. of approved manufacture and of approved colour to the plastered surfaces including cleaning , preparing the plaster surface, applying primer coat, scaffolding if necessary , and watering the surface for two days etc complete.

Item No24 : Providing and applying priming coat over new/old steel and other metal surfaces including preparing the surface by thoroughly cleaning oil, grease, dirt and other foreign matter and scoured with wire brushes, fine steel wool, scrappers and sand paper, scaffolding etc. complete.

Item No25 : Providing and applying two coats of synthetic enamel paint of approved colour to new/old structural steel work and wood work in buildings, including scaffolding if necessary, cleaning and preparing the surface (excluding primer coat) etc. complete.

Item No26 : Providing and applying epoxy mortar of resin and hardner with Sillica sand upto 20mm thickness of Sika/Fosroc/Pidilite or its equivalent including proper wire brushing etc complete as per the direction of Site-In-Charge.

Sub Estimate D

Cleaning and reaming of vertical porous blocks and drainage holes.

Item No.27 : Cleaning by redrilling the verticle porous drain pipe including removing of leaching material , grout material if any inside of the V.P.D.etc complete with lifts as directed (Verticle upward drilling)

a) Upto 5.00 mts.

b) Upto 10.00 mts.

c) Upto 15.00 mts.

d) above 15.00 mts.

Item No.28 :Drilling 75 mm dia hole in masonary/rock by diamond drilling from foundation gallery floor at required depth including flushing the hole including conveying all machinary equipment & necessary dewatering etc. complete. As directed by Engineer in charge.

Item No.29 : Providing, laying and fixing P.V.C.pipe of 75mm dia. with fittings such as bends, tees, reducers, clamps, etc. including necessary excavation, trench filling etc. complete. Including removing existing pipe line if necessary and conveying and stacking the same in PWD chowky or as directed etc. complete.

Sub Estimate E

Repairs to Deck Slab beam of spillway bridge.

Item No.30 : Dismantling of cement concrete pavement by mechanical means using pneumatic tools, breaking to pieces not exceeding 0.02 cum in volume and stock piling at designated dismantled materials up to a lead of 1000 metres, stacking serviceable locations and disposal of and unserviceable materials separately etc. complete.

Item No.31 : Crack Groove Cutting: Groove shall be cut using hand held electrically operated concrete cutting machine of size of 50 mmwide and 75 mm deep on each side of the crack to form as "V"groove all along the crack to fill the polyester resin/ Epoxy putty(horizontal and vertical cracks). After the groove cutting, theconcrete shall be removed from the groove using the pneumaticconcrete chipping machine to form "V" groove. The item includes the cost of hire charges for all machineries, tools and barges and all labour charges etc., complete.

Item No.32 : Providing and injecting epoxy grout including structuring of crack in the body of slab girder by sand blasting, fixing inlet tube arrangement including cost of materials, machinery required for thework and labour charges etc. complete.As directed by Engineer in charge.

Item No.33 : PICC Coating for concrete Bridge repair work :-Providing and applying Poly Ironite Ceramic Cementitious (PICC) material of Self curing ,High Abrasion resistant , Non shrink ,High strength,UV resistant, repair mortar coating on bond coat Kelox water missable epoxy on concrete surface upto 10 mm thickness including Cleaning the concrete surface of bridge by grinding the surface by grinder machine with wire brush /diamond wheel, removing existing loose particles etc. by using grinder, wire brush,breaker machine, water jet(using other mechanical / manual means) also removing of algae fungi by special chemical of clonon etc.complete with all leads and lifts, Material, Machinery, Labour,Scaffolding etc. complete as per specification and as directed by engineer-in-charge

Item No.34 : Providing & Applying DuraClean- WR - for cleaning the TMT bars,steel structure etc. of structure by Waterjet cleaning/ grinding the surface by grinder machine, wire brush, removing existing corrosion from the metal surface also removing loose particles(using other mechanical / manual means) and apply on prepared surface of DuraCap 2 coats corrosion preventive coat on prepared TMT bars,steel structure,metal surface etc. to protect it from corrosion etc. as per manufacturer's specification ( using other manual / mechinical means) complete as per specification including cost of all materials,machinery, labour, insurance charges as directed by the Engineer in charge.As directed by Engineer in charge.

Item No.35 : Carry out application of "Bi-polar migratory corrosion inhibitor" on concrete surface. This inhibitor has migratory kind of property which permits the material to migrate to a virtual extent of 100mm, through pores of concrete,inhibiting the corrosion etc complete.As directed by Engineer in Charge

Item No.36 : P/Fixing of carbon fiber sheet of 430 GSM with adhesive including of hanging scofolding of all manpower and equipments complete in all respect

Item No.37 : Lifting of span and bearing locations by suitable hydraulic jacks connected by high pressure, rubber hoses to pump & removal of old exsting bearing ( Roller side only) As per Quotation

Item No.38 : Supplying, fitting and fixing in position true to line and level POT- PTFE bearing consisting of a metal piston supported by a disc or unreinforced elastomer confined within a metal cylinder, sealing rings, dust seals, PTFE surface sliding against stainless steel mating surface, complete assembly to be of cast steel / fabricated structural steel, metal and elastomer elements to be as per IRC: 83 part I and II respectively and other parts conforming to BS:5400, section 9.1 and 9.2 and clause 2006 of MORT & H specifications as per drawing and approved technical specifications etc. complete.

Item No.39 : Providing and laying chequered tiles of approved quality of size 30cm x 30cm, confirming to corresponding I.S. for flooring in required position laid on a bed of 1:4 cement mortar including cement float, filling joint with cement slurry cleaning curing etc. complete.

Item No.40 : Penetration Coat Over Top Layer of Crushed Cement Concrete Base-Spraying of bitumen over cleaned dry surface of crushed cement concrete base at the rate of 25 kg per 10 sqm by a bitumen pressure distributor, spreading of key aggregates at the rate of 0.13 cum per 10 sqm by a mechanical gritter and rolling the surface as per clause 506.3.8

Item No.41 : Providing and fixing in position TMT - FE - 500 bar reinforcement of various diameters for R.C.C. pile caps,footings, foundations, slabs, beams columns, canopies, staircase, newels, chajjas, lintels pardis, copings, fins, arches etc. as per detailed designs, drawings and schedules. including cutting, bending, hooking the bars, binding with wires or tack welding and supporting as required complete.

Sub Estimate F

Supplying, Installing, Testing and commissioning of 20 KWp Off grid Solar Power Pack with LED fittings etc for Koyna Dam top area.

Item No 42 : Supplying, installing, testing and commissioning of 20 kWp off grid solar power pack with GI mounting structure and interconnecting wires / cables along with 24V/12V pure sine wave solar power inverter (THD<5%), 24V/12V charge controller and 24V/12V C-10 rated lead acid battery bank of required capacity and required SPV modules for battery backup of 6 hrs complete, with 5 years on site performance warrantee as per Specification no. ESD-RT-OFG4. Note - For item no. 4-5-4 add Rs. 87714/- per kWp for off grid solar power pack above 11 kWpupto 25 kWp ( 942857 + (85714 x 9) = 942857 + 771426 = 1714283

Item No 43 : Supplying and erecting LED Street light fitting suitable for above 40W to 48W lamp, including lamp, with PF > 0.95 class IP 65 and above housing of pressure die cast aluminium alloy and heat sink extruded aluminium complete per specification No . FGODF/ FLS2.

Item No 44 : Supplying and erecting LED Flood light fitting of 200W,including lamp, with PF > 0.95,class IP 65 and above Housing of pressure die cast aluminium alloy and heat sink extruded aluminium complete per specification No FG-ODF/FLS-2

Item No 45 : Supplying and erecting LED Flood light fitting of 120W, including lamp, with PF > 0.95,class IP 65 and above Housing of pressure die cast aluminium alloy and heat sink extruded aluminium complete per specification No FG-ODF/FLS-2

Item No 46 : Supplying and erecting LED Flood light fitting of 50W, including lamp, with PF > 0.95,class IP 65 and above class IP 65 and above housing of pressure die cast aluminium alloy and heat sink extruded aluminium complete per specification No FGODF/ FLS-2

Item No 47 : Supplying & erecting LED 20W tube light fitting (4 feet) with aluminium housing, heat sink, integrated HF electronic driver complete

Item No 48 : Supplying and erecting LED Flood light fitting of 90-100W, including lamp, with PF > 0.95, class IP 65 and above housing of pressure die cast aluminium alloy and heat sink extruded aluminium complete per specification No FG-ODF/FLS-2

Item No 49 : Supplying and erecting mushroom shaped integral 12W-16W LED decorative bollard upto 680mm with IP65 protection on provided foundation complete ( For Gate)

Item No 50 : Supplying and erecting Street light bracket for erection of Single fitting on tubular welded pole with 40 mm. dia 1.0 m long “B” grade G.I. pipe along with pole cap of 125mm dia 600 mm long duly welded as per specification no. FG-BKT/BPC

Item No 51 : Dismantling the existing W.T. fluorescent fitting/ S.V./M.V. / M.H. lamp /LED fitting from pole with brackets complete.

Item No 52 : Supplying and fixing 36U floor mount rack (Dimension- DxWxH – 800x600x1600 mm) as per specification No. WGNAS/RAK

Item No 53 : Supplying and erecting marine plywood 18/19 mm thick fixed to wall or on provided panel board with necessary materials such as screws, wall fasteners, supports, nut bolts etc. complete

Item No 54 : Supplying, fixing and commissioning MCB type change over switch 4 pole, 63A with 3 positions (I-O-II) with centre off position as per specification no. SW-SWR /MCBCOS

Sub Estimate G

Supplying & erecting Search Light installation on Koyna Dam for security purpose.

Item No 55 : RA Revolving Search light (Imported ) Scorpion Having specification as follows. 1) Heavy Duty Professional Search Light usable for patrolling of the police forces. 2) Range 2000-5000 Mtr. 3) Input Voltage AC 120-240V 50-60 Hz 4) Lamp Specification -Xenon Lamp. 5) Output Light (Lumens) - 5600K. 6) Angle of Hunting -Pan 120o.

Sub Estimate H

Supplying & erecting RMU & 11KV Vacuum circuit breaker for uninterrupted power supply to koyna dam.

Item No 56 : Supplying & erecting 11 kV 630A, indoor type ring main unit with 1or 2 incoming & 2 or 1 outgoing with HRC fuses complete erected on provided cc foundation/MS channels/trench, etc, as perspecification no SW-HTS / RMU

Item No 57 : Supplying and erecting 11kV, 630A, vacuum circuit breaker of required rating, on provided MS channels / trench / foundation as per specification no SW-HTS / VCB