Estimate for Providing Estate Health Services in New Bus Stand, Taraori Town Distt. Karnal. Providing and installing 1 No. tube well 250 mm x 200 mm i/d up to depth 152 Mtr. in New Bus Stand Taraori Town Distt. Karnal and all other works continge

Amount

Drilling of 558.80 mm dia bore by hydraulic rotary drilling (reverse circulation method) according to ISI specification No. 2800-1991 (Part-I) as amended up to 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 110 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. ( 152 Mtrs bore hole)

Supplying and lowering 273.10mm outer dia ERW steel pipes as per IS 4270-1992 as amended up to date 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 length 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, welding where required and all sockets. The pipe shall be painted with anticorrosive paint and covered tightly with polythene. (95 Mtr.)

Supplying and lowering 219.10mm outer dia ERW steel pipes as per IS 4270-1992 as amended 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 152.40mm length 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, welding where required and all sockets. The pipe shall be painted with anticorrosive paint and covered tightly with polythene. (37 Meters)

Supplying and lowering 200mm i/d nominal size all welded stainless steel conforming to IS code 8110:2000 (Sec designation X 04 CR 18 N 110 of IS 6528 of equivalent thickness 8.0 mm minimum equivalent thickness 0.9mm slot opening 0.50 mm open area 20% (Johnson make, super Filtration, star Filtration (wedge slot) and make approved by department (ISI marked) (20 Mtrs)

Supplying, fixing and lowering reducing socket as per IS:226/1975 as amended up to date 273.10mm/outer dia, into 219.10mm outer dia with 8 threads per inch or 25.40mm, to be made out of M.S. plate with interior threads to be suitable for jointing 273.10mm outer dia pipe and 219.10mm outer dia ERW pipe as per item No.2 and 3 above. ( 1 No.)

Providing and fixing in position suitable bail plug hook of 219.10mm as per IS 226/1975 as amended up to 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. (1 No.)

Supplying and packing graded gravel of size as per ISI 4097/1988, as amended up to 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 on the bore and will be placed other liner and housing pipes have been lowered and suitably clamped. Thickness and size of the gravel packing will be as directed by the Engineer-in-charge strictly as per relevant ISI. (36 Cum)

Supplying and fixing well threaded M.S. cap for 273.10mm outer dia M.S. pipe as per ISI 226/1975 as amended upto date to the satisfaction of the Engineer-in-charge. (1 No.)

Supplying as per IS : 226/1975 as amended upto date deodar wooden box made of 20mm thick wood size 60cm x 30cm x 75cm with lid and locking arrangement etc. for preserving the strata samples received from the bore as and when desired by the Engineer-in-Charge. (1 No.)

Supplying and 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 ISMB 100mm x 150mm weight not less than 17.00kg/m, cross section area not less than 21.67 sq.cm flange 7.00mm, web thickness 5.40mm, 2.00mm long (each) embedded in suitable foundation as approved by the Engineer-in-Charge. (1 No.)

Development of T/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 of this work. When development by compressor of the 450/600 CFM, 250 PSI or of suitable rating ( 15 Hours)

When developed is done with a pump of discharge 1.5 times than the operational discharge (10 Hours)

Providing and fixing centralizer guides (centralizer) fitted to the well assembly except the housing pipe, at a spacing of 12 Mtr. centre to centre, to keep the assembly in centre of the bore hole, as per approved design and specification confirming to IS 226:1975 (20 Nos.)

Mohan Dutt Sharma