WBPHED/AE/BSSD/NIeT_02/26-27 _3

Carrying CI/DI pipes with specials and valves and lowering placing in position and laying carefully inside the trenches in proper alignment and gradient etc.including earth work inexcavation of adequate width as per specification having min. clear cover from top of pipe is 1.10mtr. below existing ground level in any kind of soil including mixed with boulder, road sub-grade and its flank,but excluding moorum and laterite and stone  etc.without damaging the exisiting telephone/electric cableetc.(incaseof damaged if any type of cable line during excecution , necessary damaged charges as applicable by the respective authority will beborne by the agency in his own cost) preparing the bottom surface for continuous bedding of pipe line and laying pipes, fitting, fixing specials and valves with bailing out water if any including carriage of pipes, specials and valves from local deptt.store within 8KM and back filling the trenches with excavated earth in layers to original condition as per specification and direction of EIC. The surplus materials after execution of work are to be return to the deptt. store. N.B: i) Any deviation from required clear cover of 1.10mtr., due to site adverse condition, prior permission is to be obtained from the EIC in exceptional situation and payment will be made on prorate basis over the rate of entire item ii) No payment will be made without hydraulic test of the pipe line either part or full  iii)Thepipes, specialsand valves , rubbergasket willbe supplieddeptt. free of cost. a) 100 mm. dia.

Making rubber gasket joint to CI/DI pipes maintaining proper alignment level etc. by mechanical arrangement with or without using mobile cranes  where necessary and with help of allot her equipments tools and tackles etc. as required providing lubricants of approved quality and direction of EIC. (rubber gasket will be supplied deptt. free of cost) a) 100 mm. dia.

Cutting DI pipe (all class & type) to required length with cutting device etc. and grinding the cutting portion with file as per direction and satisfaction of EIC. a ) 80mm.dia.to 125mm.dia pipe

Chamfering the spigot end of all type/class of DI pipe for proper using of push joint by means of grinder set at site for proper joint etc. all complete as per direction of EIC. a) 100 mm dia.

Carriage of different type of departmental pipes from Divisional/Sub-divisional store to the work site by truck including loading, unloading, stacking etc. including cost of fuel, lubricant and also cost of driver, helper etc. and all other taxes and charges as applicable as per direction of EIC a) Above 5 Km upto 10 Km

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. a) Pakur variety.

Construction of different dia Sluice valve /Air valve /Washout chamber in different sizes for village road where light traffic run and for main road where heavy traffic run as deptt.approved drawing with 25cm thick brick work (1:6) over cement concrete (4:2:1) over a single B/F soling over150mm.thick sand filling in foundation including earth work in excavation and disposal of excess earth from work site with RCC (1:1.5:3) cover slab 100mm / 150mm thick slab on top of chamber with 1% reinforcement in RCC cover slab with necessary opening for operation of valve all complete including cost of labour & materials as per Departmental Dwg. [Reinforcement type:- Other manufactuerers not specified] i) 80 mm to 150 mm dia pipe

Filling the pipe line with water, testing hydraulically as per I.S 3114-1965 (Article-6) in section of a length not exceeding 500mtr. for head of pressure as per specification including supplying installing and fixing all equipments such as diesel pump set, blank flange, pressure gauge,valve, pressure pump and all other tools and plants including drilling topping and plugging of necessary holes to pipes, blocking ends providing temporary thrust block and subsequent blocking of holes and other jointing materials and dismantling and removal of the same including disposal of water etc. all complete as per specification and direction of EIC. The rate is inclusive of cost of requisite water to be arranged by the contractor (Recovery rate of water @ Rs.10.00/m3, if contractor used water from deptt. source). A) For CI/DI pipe a) 100 mm dia.

Cleaning thoroughly the inner surface of pipe line including specials and valves by flushing with water and subsequently disinfection of the same pipe line by flushing again with water containing bleaching powder resulting in residual chlorine not less than 15mg/ltrs. after 24hrs. of such filling including laboratory testing of water samples obtain from the disinfested pipe line and disposal of water from the pipe line after completion of the work. The rates including of cost of requisite water to be arranged by the contractor (The rate of water @Rs. 10/m3 may be recovered, if the contractor used water from deptt. source). A) For CI/DI pipea) 100 mm dia.

2.0 Sinking of Tube Well Boring with casing pipe with suitable dia varying to 300mm. to 450mm dia water set system or perfusion system including welding or fitting and fixing threading jointing the tubewell as per consisting of MS pipe strainer, socket, bottom plug top cap etc. and lowering the whole assembly within the bore as per direction of EIC (MS pipe, strainer, coupling will be supplied departmentally free of cost surplus materials if any to be returned to the store in good condition for which no extra payment will be made casing pipe will be supplied by the contractor. i) 200mm dia.