Dibrugarh Town Water Supply Scheme Phase II

Amount

Survey Work, Design and As-Buit Drawing: Conducting route survey under this scope and in consonance of the approved scope relevant ongoing projects (if any) on command area map along the road, fixing up alignment, taking levels at every 50 m intervals , and at each crossing & junction of road, change of alignment by qualified surveyors and with modern equipment viz. GPS, Total Station / DGPS and preparation of drawing in Auto CAD and GIS format as per instruction of Engineer - in - Charge showing the alignment of road, route of pipeline, location of Head Works & other intake sites, important land marks in both side of the roads, habitation by hatch mark and submission of 3 (Three) copies of drawing (Hard Copy) as well as soft copy in (CD or DVD) with geo reference of all landmarks, important road crossings, head Works, Design of the complete project, As built drawing & other related sites of proposed areas as directed. Survey Work also Includes Household survey for finalizing house survey connections- Entire water supply scheme Hydraulic designing and modelling of proposed water supply main lines, distribution system, and structural design of components (if any) included in proposed water supply system completely in all respect. Any changes as required after re-designing (if needed) the system shall be informed to the Engineer-in-Charge and after approval shall be executed entire project area as directed.

Clear Water Transmission main :

DI - K9 Pipes for Clear water Pipes, Valves, Electro-Magnetic Flow Meters and Specials: - :- Design, supply, laying, hydro-testing, S&S Centrifugally Cast Ductile Iron double chamber Class K-9 pressure pipes conforming to IS : 8329:2000 with restrained joints (bolt less), all complete. Provision of DI Specials of class K-12 for push-on Jointing. Providing and laying Class K-12 Ductile Iron double chamber restrained joint (bolt less) specials such as tees, bends, collars, tapers and caps etc. conforming to IS : 9523 including testing of joints all complete. Providing and laying D.I. Specials of Class K - 12 suitable for mechanical jointing as per IS : 9523. Providing push-on-joints to Centrifugally (Spun) Cast Iron Pipes or Ductile Iron Pipes including testing of joints and the cost of rubber gasket. Supply of C. I. Mechanical Compression Collar Coupling suitable for C.I. Spun Pipes(as per-IS-1536/2001)and complete with sealing rubber gasket of SBR,.C.I. follower Glands and M.S. nut Bolts. The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS:1538/1993. Design, Supply & installation CI D/F sluice/ Washout/ Air valves and others with cap/wheel as per IS 14846/2000 PN 1.0 with ISI marking. Labour charge for carrying, placing in position, fitting and fixing C.I. sluice valve (with wheel & cap) C.I. reflex valve complete with supplying bolts and nuts, 3 mm thick rubber insertion sheet etc. (the tail pieces if required will be paid separately) all complete as directed (one valve and two flanged joints). Lowering, laying and jointing in position following C.I.D/F Reflex valves, Butterfly valves and Sluice valves including cost of all labour jointing material, including nut bolts and giving satisfactory hydraulic testing etc. complete including required excavation work for pipes, cables, sockets. FIlling of excavated earthwork for Trenches foundations, plinths and disposing off the surplus excavated earthwork material removed from the site and valve chamber with precast steel fibre reinforced concrete frame and covers (S.F.R.C. frame and covers)Providing and constructing B.B. masonry valve chamber with 15 cm thick 1:3:6 proportion PCC bedding,excluding excavation,B.B.masonry in CM1:5 proportion precast S.F.R.C. frame and cover, close timbering in trenches including strutting, shoring and packing cavities, Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana I Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate I retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge, for the following grades of concrete, centering and shuttering including strutting, propping etc for formwork removal, Steel reinforcement for RCC work, road restoration wherever required etc. and other works in complete as directed by Engineer-in-charge.

300 mm to 400mm dia Ductile Iron Class K-9 pipe (inclusive of all fittings and other relevant accessories)

Schedule II : Filter Media for Ex. WTP 42.7 MLD Filter House

Supplying and placing of filter sand of hard and resistant quartz, uniform size and shape free from dust, clay, soft grains, dirt and any other foreign materials includind inorganic salt and organic substance, washed and screened. Having uniformity coefficient between 1.3 to 1.7, effective size between 0.45 to 0.70mm, ignition loss not exceeding 0.7% by weight, soluble fraction in Hydrochloric acid not exceeding by 5% by weight, silica content not less than 90%, specific gravity between 2.55 to 2.65, wearing loss less than 3% as per IS: 1419 (Part-I):1977 all complete as directed. Supplying and placing of filter gravel of uniform size and shape without flaxy shape free from dust , clay, soft grains, dirt and other foreign materials, washed and screened to different sizes as given below as per IS 8419 (Part-I) : 1977 all complete as directed, CI D/F sluice valve with cap/wheel as per IS 14846/2000 PN 1.0 with ISI marking along with labour charges and K-12 class specials such as tee, bends, collars, tapers and caps confirming to IS: 9523 including testing of all joints and other as directed by Emgineer-in-charge.

Supply, installation, and commissioning SCADA System for New Filter Bed and Modification Panel of Whole System into Single Control at WTP in all complete and any other works as directed by Engineer/ authority.

Elevated Service Reservoirs

Elevated Service Reservoir :-Design, construction, supply, erection, testing and commissioning of 2(Two) Zonal Over head service reservoirs of Circular/Rectangular shape, RCC framed staging of capacities 20.00 LL at PWD Campus and 10.00 LL at Dibrugarh Universityat locations under the command areas to be served. RCC Reservoir having adequate foundation including excavation along with the lift and lead, Providing and Laying Cement concrete adn ready mix design mix concrete for the works up to the plinth level and M-30 Grade concrete for all the works above the plinth level. Steel for reinforcement works. Filling the ecxavated earthwork in trenches, plinths and sides of foundation and disposing off the excavated surplus earthwork Centring and shuttering including strutting and propping for foundations, footings base of columns, column, pillers, piers, abutments, lintels, plinth beam, girders, cantilevers, suspended floors, roofs, landings, balconies etc. Cement plaster for internal plastering, Finishing of walls with Premium Acrylic smooth exterior paint with silicon additives. Supply and transportation of S.P fire hydrants, lightning arrestor with earthing system, providing CC topping on bottom dome & conical dome inside the reservoir & CC Skirting on inner faces of reservoir wall, providing cement mortar plaster to all other exposed surfaces of the structure and painting of the RCC structure with weather resistant cement paint over priming coat & anti corrosive paint over a coat of lead primer to M.S. work. Provision of valves for various purposes like Inlet, Outlet, Bypass, fire Hydrant, Washout of required sizes including cost of labour charge for carrying, placing in position, fitting and fixing of the valves all complete, as directed and specified including construction of operator room in the premises and any other works as directed by Engineer in charge/ employer. For Pro.ESR-1 & Pro.ESR-2, Separate Scada Room 2 No-Size-3.5m x 3.5m x 3m and other works as directed by engineer in charge.

SCADA for Elevated Service Reservoir (ESR-1 20.00 LL and ESR-2 10.00 LL):- Supply, Installation, testing and commissioning of PLC Based RTU Panel, Ultrasonic/Radar/Hydro static level Transmitter including all accessories & Fittings etc. including Mounting structure, painting , tagging, cabling and termination up to PLC Panel, complete as per approved drawing, scope of work, detail technical specification and engineering supervision. Design, Supply, Installation, Testing and Commissioning of Sealed Diaphragm Type Pressure Transmitter. Piezo-resistive sensor technolgy based pressure transmitter with Micro-processor based integral LED/ LCD display, with accuracy of ± 0.3% of span, external zero and span adjustment, self diagnostics, temperature sensor for compensation. 15 to 36 V DC power supply, output signal of 4-20 mA DC with HART. Minimum IP 65 degree of protection. Supply, Laying of power cable with Brick protection for underground work as per IS specification, Laying of cable on cable tray with glanding, labeling, tagging, with suitable lugs. Full bore electromagnetic flow meter of 300 mm, 350 mm & 450 mm at inlet with similar double solonoid altitude control valve, and flow control valve of as per approved drawing and instruction of Engineer in-charge.

Distribution Network

A) DI - K7 Pipes for Distribution network:- Design, Detailed Engineering and Drawings with technical specifications, Supply, delivery, Stacking, laying, Trial run, Flushing Disinfection and Commissioning of pipelines by flushing with water containing bleaching powder at 0.5 gms per litre of water and cleaning the same with fresh water, operation to be repeated three times including getting the sample of water from the disinfected main tested in the laboratory for the entire implemented network system. Road cut / railway crossing/ nalla/ drain/ culvert crossing, jointing and hydro-testing for distribution pipe network of Ductile Iron (DI) Pipes of Class K7, and P 1.6 rating, IS marked conforming to IS 8329:2000 Centrifugally Cast (SPUN) Pressure Pipes for water with Socket, Spigot ends and tyton joints in standard working lengths of 5.5 & 6m for classification K-7 as per details given below suitable for Push- on Joint (EPDM Rubber Gasket Jointing) with cement mortar lining inside the pipes as per Annexure-“B” of IS 8329:2000 and Zinc Coating with a finishing layer of Epoxy Resin (Blue Epoxy) on external surfaces as per Annexure-“A” of IS 8329:2000, Third Party Inspection (Pre & Post) as per Technical Specifications and direction of Engineer including all labour, material, equipment all lead and lift all work complete including earth work, back filling & thrust blocks, including Providing & Fixing Steel Bridges For DI / HDPE Pipe Crossing ,of Required Strength On nalla/Stream/ culverts, construction of pedestals including all up to commissioning, Third party inspection (Pre & Post), Road restoration including providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:1.5:3 (1 Cement: 1.5 coarse sand (zone-Ill) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources) Providing and laying 60 mm thick faciory made cement concrete interlocking paver block of M -30 grade made by block making machine with strong vibratory compaction, of approved size, design & shape, laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with line sand etc. including supplying and stacking of aggregate at site for WBM Road, and other various activities for WBM Road such as Preparation and consolidation of subgrade with power roller of 8 to 12 tonne capacity, laying, spreading and compacting of stone aggregates with specified size to WBM specifications, Supply & installation CI D/F sluice/ Washout/ Air valves and others with cap/wheel as per IS 14846/2000 PN 1.0 with ISI marking. Labour charge for carrying, placing in position, fitting and fixing C.I. sluice valve (with wheel & cap) C.I. reflex valve complete with supplying bolts and nuts, 3 mm thick rubber insertion sheet etc. (the tail pieces if required will be paid separately) all complete as directed (one valve and two flanged joints). Lowering, laying and jointing in position following C.I.D/F Reflex valves, Butterfly valves and Sluice valves including cost of all labour jointing material, including nut bolts and giving satisfactory hydraulic testing etc. complete including required excavation work for pipes, cables, sockets. FIlling of excavated earthwork for Trenches foundations, plinths and disposing off the surplus excavated earthwork material removed from the site and valve chamber with precast steel fibre reinforced concrete frame and covers (S.F.R.C. frame and covers)Providing and constructing B.B. masonry valve chamber with 15 cm thick 1:3:6 proportion PCC bedding,excluding excavation,B.B.masonry in CM1:5 proportion precast S.F.R.C. frame and cover, close timbering in trenches including strutting, shoring and packing cavities, Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana I Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 all completeall complete as per the direction of Engineer-in-charge.

300 mm to 400 mm dia DI K-7 (inclusive of all fittings and other relevant accessories)

B) HDPE Pipes for Distribution System confirming to IS 4984 / 14151 / 12786 / 13488:- Providing and supplying in standard lengths Polyethelene Pipes, confirming to IS 4984 / 14151 / 12786 / 13488 with nesessary jointing material like mechanical connector i. e. thread / insert joint / quick release coupler joint / compression fitting joint or flanged joint excluding coupler/specials, including transportation and freight charges, inspection charges, loading / unloading charges, conveyance to the departmental stores & stacking the same in closed shade duly protecting from sunrays & rains, excluding GST levied by GI & GOM in all respect etc.complete. Hydraulic testing of HDPE (PE 80 PN-8) pipe including all pipe, specials, fittings and all relevant accessories (using electrofusion) confirming to IS 4984 and the specifications, including third party inspection (Pre and Post), all taxes and duties, transportation, freight charges, loading and unloading, construction of Thrust Block where necessary, conveyance to the project site and stacking with cost of all labour and material for following pipe diameters. including all labour, material, equipment all work complete as per specification and as directed by the Engineer In Charge with all lead and lift-including earth work, back filling &thrust blocks, nalla/Stream/ culvert crossing, construction of pedestals including all up to commissioning, Third party inspection (Pre & Post), Road restoration including providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:1.5:3 (1 Cement: 1.5 coarse sand (zone-Ill) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources) Providing and laying 60 mm thick faciory made cement concrete interlocking paver block of M -30 grade made by block making machine with strong vibratory compaction, of approved size, design & shape, laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with line sand etc. Including supplying and stacking of aggregate at site for WBM Road, and other various activities for WBM Road such as Preparation and consolidation of subgrade with power roller of 8 to 12 tonne capacity, laying, spreading and compacting of stone aggregates with specified size to WBM specifications, Supply & installation CI D/F sluice/ Washout/ Air valves and others with cap/wheel as per IS 14846/2000 PN 1.0 with ISI marking. Labour charge for carrying, placing in position, fitting and fixing C.I. sluice valve (with wheel & cap) C.I. reflex valve complete with supplying bolts and nuts, 3 mm thick rubber insertion sheet etc. (the tail pieces if required will be paid separately) all complete as directed (one valve and two flanged joints). Lowering, laying and jointing in position following C.I.D/F Reflex valves, Butterfly valves and Sluice valves including cost of all labour jointing material, including nut bolts and giving satisfactory hydraulic testing etc. complete including required excavation work for pipes, cables, sockets. FIlling of excavated earthwork for Trenches foundations, plinths and disposing off the surplus excavated earthwork material removed from the site and valve chamber with precast steel fibre reinforced concrete frame and covers (S.F.R.C. frame and covers)Providing and constructing B.B. masonry valve chamber with 15 cm thick 1:3:6 proportion PCC bedding,excluding excavation,B.B.masonry in CM1:5 proportion precast S.F.R.C. frame and cover, close timbering in trenches including strutting, shoring and packing cavities, Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana I Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 all complete as per the direction of Engineer-in-charge.

HDPE PE 80, PN 8, 110 mm to 280 mm dia (inclusive of all fittings and other relevant accessories)

Schedule VI : House Service Connections and Meter Installation

A) House Service Connection: Providing and fixing Chlorinated Polyvinyl Chloride (CPVC)/ PPR pipes, having thermal stability for hot & cold water supply including all CPVC/PPR plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. Providing and supply of water meter, meter box and other components. Labour work for fixing of water meter (Water meter supplyed by SMC free of cost). Providing, Supplying and Fixing of Strap Saddle. Providing and fixing brass ferrule with C.I. mouth cover including boring and tapping the main. Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete, road restoration as per exisiting condition, commiissoning in complete as directed.

For 20-25 mm Service Connection

Schedule-VII : Strengthening of Existing Pure Water Rising Main

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana I Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate I retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge, for the following grades of concrete.: Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement including steel reinforcement for RCC Work, centering and shuttering including strutting and propping for the removal of formwork and finishing of walls with Acrylic smooth Exterior Paint with silicon additives.

Operation & Maintenance: The commissioning, running, and maintaining of the scheme for five years encompasses expenses related to establishment, operation, and maintenance repairs. Essential Establishment costs include various operational needs, such as staff salaries, employment of operators and valve men, and other administrative and logistical expenses required for the seamless operation of the water supply infrastructure. Regular inspections, servicing of mechanical components, and replacing worn-out parts are necessary to prevent system failures and ensure continuous operation. This involves routine maintenance activities like cleaning and repairing pipelines, pumps, and valves, as well as addressing unforeseen damages. Effective repairs and maintenance are crucial to minimize downtime, reduce the risk of major breakdowns, and extend the lifespan of the water supply infrastructure and any other works. Upon completion of the five-year period, the scheme will be handed over to the Local Body/Municipal Board as directed by the Engineer-in-charge (EXCLUDING ELECTRICTY CHARGES)

First Year

Second Year

Third Year

Fourth Year

Fifth Year

MR DIPAK SARMA (BID ID -265912)

BALAJI CONSTRUCTION COMPANY (BID ID -265874)