Laying of 100mm dia D.I. K7 pipe with specials Including MS works,supply and installation of valves with construction of valve chambers and complete permanenet road restoration work including all with ancillary works where necessary to lay pipe ove

Excavation of trial pit (3.0 m x 1.0 m x (upto) 3.0 m) for fixing of pumping main, washout line raking every detection against damage of S.W. pipe line electrical cable etc. as underground obstruction including 37.5 mm timber shuttering, earth cutting, dewatering, barricading and back filling etc. as per direction of E-I-C.

Picking up and removing old bituminous layer or sand sealing coat from old black topped surface and cleaning the exposed surface by scraping and stacking the material as directed. A) by manual means:(i) from 50 mm to 100 mm thick.

Labour for picking up existing metalled road surface to a specified average depth including screening and stacking the pavement materials. b) For average depth above 40 mm but not exceeding 75 mm by manual means: i)Bricks/ Jhama Metal Surface

Dismantling all types of masonry excepting cement concrete plain of reinforced. Stacking serviceable materials at site and removing rubbish as directed with in lead of 75 m. i) In ground floor including roof.

Dismantling all type of plain cement concrete works, stacking serviceable materials at site and removing rubbish as directed with in a lead of 75 m In ground floor including roof. a) up to 150 mm. thick.

Dismantling R.C. floor, roof, beams etc. including cutting rods and removing rubbish as directed within a lead of 75 m. including stacking of steel bars. (a) In ground floor including roof.

Earth work in excavation in foundation trenches or drains in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spils within a lead of 75m. as directed. The item includes necessary trimming the sides of trenches Levelling, Dressing and ramming the bottom, bailing out water as required complete. a) Depth of excavation not exceeding 1500 mm.

Hire and labour charges for shoring work (including necessary close plank walling, Framing, Eucalyptus/Jhou Bulla piling, Strutting etc.) complete as per direction of the Engineer-in Charge For foundation excavation.(vertical surface area in contact with supported earth is to be measured.) (This item should be executed on specific direction of the Engineer-in-Charge.) (a) Depth up to 1.50 M. below G.L.

Hire and labour charges for 75 mm dia. Bamboo railing on Jhou/Eucalyptus or other approved timber/bamboo posts 1.40m above G.L. and 0.6m below G.L. including tying strongly with coir ropes & boring holes for posts in any soils/ concrete surface/Bituminous surface packing the sides etc. including cost of carriage of all materials and labour complete including cost of restoration to the damages of the ground to its original condition as per direction of Engineer-in-Charge after removing the barricade. (Cost of restoration would be paid Separately) a) 75 mm dia bamboo railing and 25 mm dia Jhau/Eucalyptus/other approved timber posts @ 1.60m apart. i) Railing with 3 rows.

Filling in foundation or plinth by silver sand in layers not exceeding 150 mm. as directed and consolidating the same by thorough saturation with water ramming complete including the cost of supply of sand. (Payment to be made on measurement of finished quantity).

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with powdered earth or local sand.

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement if any, in ground floor as per relevant IS codes. (i) Pakur Variety.

Brick work with 1st class brick in cement mortar (1:4) a) In foundation & plinth.

125 mm thick brick work with 1st class brick in cement mortar(4:1).

Hire and labour charges for shuttering with centering and nece­ssary staging upto 4 m. using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beams & co­lumns, lintels curved or stra­ight including fitting fixing and striking out after completion of works (upto roof of ground floor). a)25 mm to 30 mm shuttering without staging in foundation.

Ordinary cement concrete (mix 1:1.5:3) with graded stone chips (20mm. Nominal size excluding Shuttering and reinforcement, if any, in ground floor as per relevant IS Code. (i) Pakur Variety.

Reinforcement for reinforced concrete work in all sorts of structures including distribution bars, stirrups, binders etc initial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at every intersection, complete as per drawing and direction.

Plaster (to wall, floor, ceiling etc.) with sand and cement mor­tar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course scaffolding staging where necessary (Ground floor) [Excluding cost of chipping of concrete surface)

Neat cement punning about 1.5 mm. thick in wall, dado, window, sills, floor etc. NOTE:Cement 0.152 cu.m per 100 sq.m.

Earth work in filling in foundation trenches or plinth with good earth, in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. (Payment to be made on the basis of measurement of finished quantity of work)

Lowering any type of Ductile Iron (DI) pipes & specials and laying along trench at any depth as per speclfication and direction of the Engineer-incharge,( laying over ground. the rates shall be, reduced by 10% and the rates so reduced shall be inclusive of cost of all sorts of holding arrangements] (Diameter in mm) (a) 100 mm dia

Rubber gasket joints to C.l./D.l. pipes and specials all complete to makes the joint water tight as required hydraulic pressure as per specification and direction of the Engineer-in-Charge. [Cost of Rubber. gasket of approved make induding supply to any point within the Kolkata Municipal Area shall be paid separately.] (a) 100 mm dia

Cutting of C.l/D.I pipes for fitting with pipes and-or specials of similar or dissimilar materials at the time of laying without damaging any part of the required length including taking out of the broken pieces from the trench and restacking the same at the specified location as per direction of the Engineer-in-Charge. (a) 100 mm dia

Chamfering the spigot end of C.l./D,l. pipes for fitting with the socket of C.I./D.I pipes and/or specials in tyton jointed water mains or other wise using electric grinder as per specification and direction of the Engineer-in-Charge. (a) 100 mm dia

Flange joint to C.l./D.l/MS. pipes and specials including supply of rubber gasket. nuts. bolts. washers etc. of best quality to make the joint watertight at required hydraulic pressure all complete as per specification & direction of the Engineer-in-Charge. a) 80mm dia.

Flange joint to C.l./D.l/MS. pipes and specials including supply of rubber gasket. nuts. bolts. washers etc. of best quality to make the joint watertight at required hydraulic pressure all complete as per specification & direction of the Engineer-in-Charge. a) 100 mm dia.

All types of Ductile Iron (D.I) Specials (viz. Bend. Tee. Taper. Tail piece etc), size conforming to I.S. Specification No. 9523/2000 with cement mortar lining (inside) and bituminous coating (outside). (25% of payment will be held up till successful hydraulic testing) a) All Socket Tee 100 mm to 300 mm dia.

All types of Ductile Iron (D.I) Specials (viz. Bend. Tee. Taper. Tail piece etc), size conforming to I.S. Specification No. 9523/2000 with cement mortar lining (inside) and bituminous coating (outside). (25% of payment will be held up till successful hydraulic testing) a) Double Socket bend 100 mm to 300 mm dia.

Supply of Single/Double bit SBR gasket suitable for jointing CI/DI pressure pipes, conforming to IS : 5382 : 1985 [Popularly known as ‘Tyton Gasket"] a) 100mm dia.

Carriage of CI / Dl / ERWMS / AC pipes including loading into truck at the lifting point, unloading at destination and stacking properly in godown or yard etc. as directed (Including carriage by head load upto 30 metres at each of the two points. The rate covers all the above operations, actual transport all complete ) (A) 100 mm Dia. Upto 5 Km.

Carriage of CI / Dl / ERWMS / AC pipes including loading into truck at the lifting point, unloading at destination and stacking properly in godown or yard etc. as directed (Including carriage by head load upto 30 metres at each of the two points. The rate covers all the above operations, actual transport all complete ) (A) 100 mm Dia. Per Km Beyond 5 Km to 10 Km.

Carriage of CI / Dl / ERWMS / AC pipes including loading into truck at the lifting point, unloading at destination and stacking properly in godown or yard etc. as directed (Including carriage by head load upto 30 metres at each of the two points. The rate covers all the above operations, actual transport all complete ) (A) 100 mm Dia. Per Km Beyond 10 Km to 20 Km.

Sypply of E.R.W.M.S. (Electrical Resistant Welded M.S.) black pipe of ISI Mark as per relevent IS Specification (heavy quality ) having wall thickness not less than 5 mm. [N.B.: The rates for supply of TATA Make pipe will be arrived at by adding 20% of the corresponding rates ] (a) 80 mm dia. [Basic Price = Rs. 697/- Per M.]

Sypply of E.R.W.M.S. (Electrical Resistant Welded M.S.) black pipe of ISI Mark as per relevent IS Specification (heavy quality ) having wall thickness not less than 5 mm. [N.B.: The rates for supply of TATA Make pipe will be arrived at by adding 20% of the corresponding rates ] (b) 100 mm dia. [Basic Price = Rs. 871/- Per M.]

Supply of M.S. Flange (slipper type) as per IS-6392 TABLE 17 Thickness 12mm. 80mm

Supply of M.S. Flange (slipper type) as per IS-6392 TABLE 17 Thickness 12mm. 100mm

Supply of M.S. blank Flange as per IS-6392 TABLE 20 Thickness 12mm. 80 mm

Supply of M.S. blank Flange as per IS-6392 TABLE 20 Thickness 12mm. 100 mm

Derusting, scraping, brushing and cleaning (to the extent of exposing the original surface) the outer surface of manufactured M.S. pipes and specials. applying first coat of synthetic primer Type-B as per IS : 15337 : 2003 of approved make over it and wrapping the same with coal tar based insulating tape 2 mm thick as per IS : 15337 : 2003 of approved make and applying the second coat of synthetic primer Type - B (as specified above) over the first layer of insulating tape and wrapping the same with second layer of 2 mm thick coal tar based insulating tape (as specified above) in staggered pattern (including overlapping at ends) by torching etc. as per manufacturer's specification and as per direction of ElC. Each layer of protective wrapping shall be tested with Holiday detector at Contractor's cost and the Contractor' shall repair all holidays to the satisfaction of ElC at no extra cost (Payment will be made on finished area of work).

Gas cutting of M.S. pipes and/or M.S. plates of different thickness all complete as per specification and direction of the Engineer-in- Charge. 5mm to 8mm thick plate.

Field welding of M.S. plate by means of electric arc welding as per relevent IS specification using standard electrodes including edge preparation and charges of deployment of electric generator set with fuel, lubricant, and all other tools and plants all complete as per specification and direction of Engineer-in-Charge. [ Engineer-in-Charge shall approve the electrodes for arc welding before use ] 8 mm

Supplying ,Fitting and Fixing of M.S. Machine End fabricated with 30 mm to 40 mm thick M.S. Plate properly Machining and joint with the Socket end of C.I /D.I Pipe with supply of S.B.R Gasket and weiding with M.S pipe in the spigot end as per direction of E.I.C. 100 mm dia

Supplying ,Fitting and Fixing of M.S. Machine End fabricated with 30 mm to 40 mm thick M.S. Plate properly Machining and joint with the Spigot end of C.I /D.I Pipe with supply of S.B.R Gasket and weiding with M.S pipe in the spigot end as per direction of E.I.C. 100 mm dia

Cast iron double flanged manually operated sluice valves generally conforming to IS 14846 : 2000, having four faces and spindle nut of gunmetal. inside screw non- rising type quality gunmetal /AISI 410 spindle: seat tested to 10kg/CM² and body tested to 15kg/CM², flanges flat faced and drilled to 1.S.: 1538 : 1993. Painted black all over with asphalt base paint. Valves tested by closed end method. 100 mm dia

Cast iron kinetic double orifice type air release valve having small orifice elastic ball resting on gun metal orifice nipple large orifice vulcanite ball seating on moduled seat ring, valve with built-in-Kinetic features, isolating sluice valve mounted in horizontal position and operated by a metre wheel gearing:inlet faced and drilled to IS 1538 Table 4 & 6. valve suitable for maximum working pressure of 10 kg/CM2. 80 mm dia

Supplying. fitting and fixing air valve splash plate useing 24 mm thick MS plate) according to necessary site measurement as per direction of EIC.

Lowering, fitting and fixing of all types of valves in proper position and alignment using chain pully block or crane (for diameter above 250 mm) by providing temporary support, as required, gaskets, nuts & bolts etc. all cornplete as per specification and direction of the Engineer-in- Charge. [The rate Includes cost of flange joints] 100 mm dia

Hydraulically testing of C.l./D.I/A.C pipe lines in sections, under a head of water not less than 60m {6Kg/Cm². pressure) or above as per specific requirements by filling the main with supply of water including supply of all specials and equipments like pump sets, gauges, end caps blank flange etc. all complete as per specification and direction of the Engineer-in-Charge. [After successful completion of test. removal of ancillary specials. equipments. plugging arrangements and disposal of water shall be made at no extra cost] 100 mm dia

Shifting house connection or stand post connection from existing main to new main after excavation through any kind of soil and road materials up to required depth. dismantling existing ferrule with all fittings. plugging hole of old main with G.I. plug. drilling and tapping the new main. refixing the ferrule on the new main with serviceable old G.I pipes and other specials (New G.l. pipes and other specials. if required to be installed shall be paid extra) and back filling the trench with excavated materials all complete as per specification and direction of the Engineer- in-Charge.

Dewatering by pumps including all leads, lifts and making all arrangements of disposal. where continuous flow of water from a source other than natural or ground water is encountered in case of emergency maintenance works related to leakage. breakage and making wet connections. [Note ;- In case of any other situation demanding such emergency dewatering. use of this item is to be approved by the Superintending Engineer/Tender Accepting Authority. This item shall be executed on the specific direction duly supported by proper clarification of the E.I.C. who will be satisfied in absolute discretion that such work has not been necessitated due to any natural source of water or any fault of the Contractor]

Disinfection of water main by filling with water containing bleaching powder of sufficient quantity capable of maintaining a residual chlorine concentration of 10mg/l within the main after a detention period of two hours and flushing the same with fresh water all complete as per specification and direction of the Engineer-in- Charge.[After successful completion of the process, disposal of water and bacteriological testing of sample of flushed out water from the mains should be made at no extra cost]

Supplying, fitting and fixing G.I. pipes of TATA make with all necessary accessories, specials viz. socket, bend, tee, union, cross, elbo, nipple, longscrew, reducing socket, reducing tee, short piece etc. fitted with holder bats clamps, including cutting pipes, making threads, fitting, fixing etc. complete in all respect including cost of all necessary fittings as required,jointing materials and two coats of painting with approved paint in any position above ground. (Payment will be made on the centre line measurements of total pipe line including all specials. No separate payment will be made for accesories, specials. Payment for painting will be made seperately) (i)15 mm dia. medium quality

Supplying, fitting and fixing G.I. pipes of TATA make with all necessary accessories, specials viz. socket, bend, tee, union, cross, elbo, nipple, longscrew, reducing socket, reducing tee, short piece etc. fitted with holder bats clamps, including cutting pipes, making threads, fitting, fixing etc. complete in all respect including cost of all necessary fittings as required,jointing materials and two coats of painting with approved paint in any position above ground. (Payment will be made on the centre line measurements of total pipe line including all specials. No separate payment will be made for accesories, specials. Payment for painting will be made seperately) (ii)20 mm dia. medium quality

Box cutting or filling in Road Embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the sub-grade with Power Roller to proper camber and grade as per direction and satisfaction of Engineer-in-Charge including uprooting and removing plants and jungles when and where necessary. i) Depth upto 150 mm

Box cutting or filling in Road Embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the sub-grade with Power Roller to proper camber and grade as per direction and satisfaction of Engineer-in-Charge including uprooting and removing plants and jungles when and where necessary. ii) For each additional depth of 150mm and part thereof

Construction of Sub Base using Local Materials, spreading in uniform layers with Motor grader on prepared surface, including screening the metal as necessary, mixing by mix in place method with Rotavator at OMC, and compacting with vibratory roller to achieve the desired density, lighting, guarding and barricading including cost and carriage of all materials and making necessary earthen bundh of one metre wide on each side to protect the edges complete as per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by compacting 1st class brick aggregates (40 mm down) and sand (in proportion of 60:40).

Water Bound Macadam Sub Base by consolidating Jhama metal / Laterite chelly or stone metal /shingles of specific size in hard crust to requisite thickness (measured after compaction) in layers including screening of metals etc. as necessary, hand packing, sweeping, watering and rolling in stages with power roller to proper line, grade and camber, lighting, guarding & barricading and making necessary earthen bundh of one metre width on each side where necessary to protect edges and preparing the bed by necessary cuttingor filling and rolling all complete including the cost of all materials and hire and labour charges of all men and machineries and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by consolidating Jhama metal (63 mm to 45 mm) with moorum screening.

Providing and applying primer coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 and requisite quantity on prepared surface of granular base including cleaning of road surface and spraying primer using Mechanical means including cost and carriage of bitumen emulsion and all other incidental costs of work complete as per Clause 502 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (Ref.P-251,It No-5.01) (i) For WBM / WMM Surface: (with primer @ 0.70-1.0 kg/sqm). [Ref: Detail Estimate vide Annexure-E]

Providing and applying tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 on the prepared surface cleaned with Hydraulic broom, moistening the surface including cost and carriage of emulsion, hire charges of machinery and labour, cost of fuel and lubricants all complete as per Clause 503 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) On Bituminous Surface (Using Bitumen Emulsion at the rate of 0.20 to 0.30 kg per sqm.)

Providing and applying tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 on the prepared surface cleaned with Hydraulic broom, moistening the surface including cost and carriage of emulsion, hire charges of machinery and labour, cost of fuel and lubricants all complete as per Clause 503 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (ii) On Granular surfaces treated with primer (Using Bitumen emulsion at the rate of 0.25 to 0.30 kg per sqm.)

Providing and laying bituminous macadam with Mobile Hot Mix Plant (Light Duty) using approved crushed aggregates of specified grading as per Table 500.7 premixed with bituminous binder, transported to site laid over a previously prepared surface at specified laying temperature by means of approved and suitable arrangements to the required grade, level and alignment and rolled with suitable power roller for break down, inter-mediate and finished rolling as per specification to achieve the desired compaction including cost and carriage ofstone materials and bitumen, hire charges of machinery and equipment, cost of fuel and lubricants and wages of operational staff, quality control complete as per Specifications for Road & Bridge Works of MoRT&H (5th Revision). (1). For Grading 2 (19 mm nominal size, 50-75 mm thick.)

Providing, laying and rolling of Open - graded premix surfacing of 20 mm thickness composed of 13.2 mm (@ 0.018 m³ per m²) and 11.2 mm (@ 0.009 m³ per m²) size stone aggregates, including thoroughly cleaning of the surface, screening, cleaning and pre-heating stone chips and fully pre-coating the same either using viscosity grade paving bitumen or cut-back or emulsion, carrying the mixture by tipper trucks or by any other suitable arrangements, laying the mixture uniformly over the surface with paver finisher, including manual operations as and when required for proper line, grade and level to serve as wearing course on a previously prepared base, including mixing in Hot Mix Plant and thoroughly rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades including the cost and carriage of stone chips and matrix, heating the matrix, preheating the aggregates to required temperature and including the hire charges of Hot Mix Plant and other machinery, pay of operators, cost of fuel and lubricants etc. complete as per Clause 510 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). Using Batch Type HMP of minimum capacity 100-120 TPH.

Providing and laying Premixed Seal Coat (Type B) with approved quality sand/grit @ 0.6 m3/ 100 m2 and bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating and mixing cleaned sand/grit (100 % passing through 2.36 mm sieve and retained on 180 micron sieve) uniformly with bitumen binder, laying and spreading the mix at an uniform rate using suitable means, brushing the surface, if necessary, to ensure uniformity, followed by rolling with power roller including the cost and carriage of binder and aggregates, cost of heating the binder and aggregates and all other incidental charges, cost of fuel and lubricants, including hire charges of machineries, tools & plants required for construction and quality control complete as per Clause 511 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). I By Mechanical Means (i) With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.)

Removal of rubbish, earth etc. From the working site and disposal of the same beyond the compound, in conformity with the Municipal/ Corporation Rules for such disposal, loading into truck and cleaning the site in all respect as per direction of Engineer-In-Charge.

Conducting route survey on command area map along the road, fixing up alignment, taking levels by engaging qualified surveyors and hiring of modern instruments viz. GPS, Total Station, DGPS, Auto levels etc. as necessary and preparation of drawing in Auto CAD or in similar software showing the alignment of road, route of rising main, location of Head works & other Tubewell sites, important landmarks in both sides of the roads, habitation and submission of drawing (Hard copy) as well as soft copy in (CD or DVD).

GST (9%CGST+9%SGST)

LABOUR CESS (1%)