Providing estate water supply and fire fighting system in Government college Raipur Rani

Amount

Drilling of 685.60 mm dia bore by Direct rotary drill 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 upto 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 to the satisfaction of the Engineer-in-charge. 1 x 183 Mtr

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 88.90mm of threaded ends (8 threads to an inch or 25.40mm) manufactured out of 8.00mm thick M.S. plates with required number of M.S. socket 177.80mm with inside thread to match the pipe threads and made out of M.S. plate in to borehole in vertical position including cost of all scaffolding, derricks, Jim, poles, tools and plants, ropes, guys 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 pipes shall be painted with anti-corrosive paint & covered tightly with polythene. 1 x 110 Mtr

Supplying and lowering 219.10mm 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 88.90mm of threaded ends (8 threads to an inch or 25.40mm) manufactured out of 6.40mm thick M.S. plates with required number of M.S. socket 177.80mm with inside thread to match the pipe threads and made 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-corrosive paint & covered tightly with polythene. 1 x 53 Mtr

Supplying and lowering 200 mm i/d ISI Marked Stainless steel cage marked having thickness 8 mm slot size 0.75 mm as amended upto date.

Supplying, fixing and lowering reducing socket as per IS: 226/1975 as amended upto date 273.10 mm outer dia x 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 219.10mm outer dia ERW pipe as per item No. 2 and 3 above or by cement grouting

Providing and fixing in position suitable bail plug hook of 219.10mm 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 size of the gravel packing will be designed and directed by the Engineer-in-charge strictly as per relevant ISI. 1x45 Cum

Supplying and fixing well threaded M.S. cap for 273.10mm outer dia M.S. pipe as per ISI 26/1975 as amended upto date to the satisfaction of the Engineer-in-charge

Supplying as per IS: 226/1975 as amended upto date deodar wooden box made of 20mm thick wood size 60cmx30cmx75cm with lid and locking arrangement etc. for preserving the strata samples received from the bore as and when desired by 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 girders not less than 100mmx150mm, weight not less than 17.00 KG/m, cross section area not less than 21.67 sq.cm, flange thickness 7.00 mm, web thickness 5.40 mm 2.00 M long (each) embedded in suitable foundation as approved by the Engineer-in-charge

Development of tubewell 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 development is by compressor of 750 CFM, 250 PSI and suitable rating of 10 hours

Electric logging of Tubewell

Providing clay seal of thickness 4.00 m or above consisting of bails 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 result. (This item is to be included wherever it is necessary).

Providing & fixing centralizer guides (centralizer) fitted to the well assembly except the housing pipe at bottom and at a spacing of 12 metre centre to centre to keep the assembly in centre of the bore hole, as per approved design and specifications conforming to IS 226/1975. 1 x 6 No

M/s Shyam Sunder Govt. Contractor