Sadhoura ITI Providing and installing 1 No. tube well at Govt. I.T.I.at Sadhoura of Distt. Yamuna Nagar ( Deposit work). Prov. and installing 1 No. tube well of size 250mmx200mm upto a depth of 200 mtrs BGL by Reverse Rotary Rig and all other works

Amount

Drilling of 609.60 mm dia borne by hydraulic rotary drilling (Reverse Circular method) according to ISI specification No. 2800-1991 (Part-I) as amended upto date and modified to extent of the specification attached with this schedule of items of work in all kinds of soils and boulders up to 125 mm dia except rocky strata including the cost of all consumable stores, fuel, oil soil stabilizing material and transportation of rig and other accessories to the site of proposed bore and back( including cost of lowering of all sizes of casing pipe while boring and extracting the same against earth frictions etc.) complete in the satisfaction of the Engineer-in-Charge complete in all respects as per approved NIT. (180 x 4)

Supplying and lowering 273.10 mm outer dia ERW steel pipes as per IS 4270 -1992 as amended upto date , duly ISI marked for housing pipe in 4 to 7 meters random length with 88.90 mm of threaded ends( 8 threads to an inch or 25.40 mm) manufactured out of 8 mm thick M.S. plates with required number of M.S. socket 177.80 mm length with inside thread to match the pipe threads and made out of M.S. plate in to bore hold in vertical position including cost of all scaffolding, derricks ,jim ,poles, tools and plants, ropes , gays M.S. clamp embedded in foundation etc. complete in all respects to the satisfaction of the Engineer-in-Charge of the work including cost of all cutting threading of pipe where required and all sockets. The pipe shall be painted with anti corrosion paint & covered tightly with polythene.

Supplying and lowering 219.10 mm outer dia ERW steel pipes as per IS 4270/1992 as amended upto date ,duly ISI marked for housing pipe in 4 to 7 meters random length with 88.90 mm of threaded ends( I threads to an inch or 25.40 mm) manufactured out of 6.40 mm thick M.S. plates with required number of M.S. socket 177.80 mm length out of M.S. plate in to borehole in vertical position including cost of all scaffolding, derricks, jim ,poles, tools and plants , ropes ,gays M.S. clamp embedded in foundation etc. complete in all respects to the satisfaction of the Engineer-in-Charge of the work including cost of all cutting, threading of pipe where required and all sockets. The pipe shall be painted with anti corrosion paint & covered tightly with polythene

Providing & fixing of lowering 200 mm i/d ISI marked stainless steel ( SSC) cage as amended upto date.

Supplying ,fixing and lowering reducing socket as per IS: 226/1975 as amended upto date 273.10 mm outer dia , in to 219.10 mm outer dia with 8 threads per inch or 25.40 mm, to be made out of M.S. plate with interior threads to be suitable for jointing 273.10 mm outer dia pipe and 219,10 mm outer dia ERW pipe as per item said above.

Providing and fixing in position suitable bail plug hook of 219.10 mm as per IS 226/1975 as amended upto date, including the cost of M.S. screwed sockets etc. complete in all respects, to the entire satisfaction of the Engineer-in-Charge of the work.

Supplying and packing graded gravel of size as per ISI 4097 /1988 as amended upto date and specification attached with this schedule of item of work. The gravel should be free from dust, dirt or vegetable matters, packing to be done from the housing pipe to the bottom of liner all around in the bore and will be placed after liner and housing pipes have been lowered and suitably clamped. Thickness and sized of the gravel packing will be as directed by the Engineer-in-Charge strictly as per relevant ISI.

Supplying and fixing well threaded M.S. cap for 273.10 mm outer dia M.S. pipe as per ISI 226/1975 as amended upto date to the satisfaction of the Engineer-in-Charge.

Supplying & fixing 273.10 mm M.S. clamp as per IS: 226/1975 as amended upto date for supporting the housing pipe supported on two girder not less than ISMB 100mm x150 weight not less than 17 kg/m cross section area not less than 21.67 sq cm flange thickness 7 mm web thickness 5.40 mm 2 mm long ( each) embedded in suitable foundation as approved by the Engineer-in-Charge.

Development of tube well according to clause 9.3 of IS: 2800 -1991 (Part-I) as amended upto date and specifications attached and as directed by the Engineer-in-Charge of the work including the cost of all consumable stores, fuel , oil, compressors, pumps and machinery etc. as required for this work. a) When developed by compressor of 600 CFM 250 PSI and suitable rating .

Providing clay seal of thickness 4.m or above consisting of balls of local clay or bentonite mud to be placed in the annular space around the assembly the clay seal should be provided at a level of minimum 25.00 m above the top most screens depending on the logging results.

Providing Electric logging of tube well

MAHINDER PAL