MAD/ULB/BHATPARA/DR-2/1405

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.

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:

TakIng out C.I, / D.I. pipes with specials and valves including stacking the same within a lead of 30 M as per instruction of the Engineer-in-Charge, (Excavation. dewatering. earth filling etc. will be paid separately PIPE above 250 mm dia upto 400 mm dia

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.

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.

Brick work with 1st class brick in cement mortar (1:6)

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).

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.

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) 300 mm

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.] 300mm

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. 300 mm

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. 300 mm

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.300 mm

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) Double Socketed bend

Supply of Single/Double bit SBR gasket suitable for jointing CI/DI pressure pipes, conforming to IS : 5382 : 1985 [Popularly known as ‘Tyton Gasket"] 300 mm

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 ) 300 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. 300 mm

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] 300 mm

Supplying, fitting and fixing of C.I. Mechanical Compression flexible Collar Couplings suitable for C.I. Spun Pipes (as per IS: 1536) and D. I. Pipes (as per IS: 8329) complete with Sealing Rubber Gasket of EPDM quality (IS:5382/1985 Type - 4), Cast Iron Follower Glands and Mild Steel Nut Bolts (Zinc Coated). The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS: 1538. Fitting and fixing should be in proper position with proper care of main pipe line for leak proof condition. 300 MM

Supplying, fitting and fixing of D.I. Mechanical flexible Flange Socket Tailpiece suitable for making flanged connection with the plain barrel of C.I. Spun Pipes (as per IS : 1536) and D.I. Pipes (as per IS : 8329). The Tailpieces to be supplied complete with Sealing Rubber Gasket of EPDM quality (IS:5382/1985 Type-4), Cast Iron Follower Glands and Mild Steel Nut Bolts (Zinc Coated) . The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS: 1538. Fitting and fixing should be in proper position with proper care of main pipe line for leak proof condition. 300 mm dia

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]

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. Thikness in mm 5mm to 8mm thick plate Metre 213.00

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)

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

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 8 mm. [N.B.: The rates for supply of TATA Make pipe will be arrived at by adding 20% of the corresponding rates ] Diameter in mm (Internal)300 Metre 3037.00

Add 18% GST

Centrifugally cast (spun) Ductile Iron Pressure pipes for water. Gas and sewage conforming to IS 8329-2000 with cement mortar lining (inside) and bituminous coating (outside). A) Class K-9 (i) 300 mm

L.W.Cess 1%