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| 1 | Transportation of suitable truck mounted DTH & ODEX/ Percussion/ Calyx/ RC / Rotary drilling rig along with necessary accessories etc to the site of work & erection of rig including leveling etc complete in all respects as per directions of Engineer-in-Charges. |
| 2 | Drilling bores of 450 mm dia as per IS 2800: 1979 using DTH & ODEX/ Percussion/ Calyx/ RC / Rotary method required for drilling in collapsible strata conglomerate, boulders, pebbles, gravels, silt, clay, etc including cost of attachments , extractable casing,consumable stores, bits, water, POL etc. in annular space etc.complete in all respects as per direction of the Engineer-in-Charge. |
| 3 | Collection and preservation of soil samples in polythene bags complete in all respect as per direction of Engineer-in-Charges |
| 4 | Suply and lowering of IS marked 200 mm dia 6.40 mm thick MSERW casing pipe as per IS 4270--2001 and requirement of rotary attachment from approved manufacturers complete in all respect as per direction of the Engineer-in-Charge. |
| 5 | Development of bore well with 1000-CFM air-compressor through V notch as per IS 2800-1979 inclluding transportation of equpment etc, to the site of work complete in all respect for the bore drilled by RC rig, as per direction of Engineer-in-Charges. |
| 6 | Development/ establishment of discharges of bore well and yield testing with subribale pump through V notch as per IS 2800-1979 inclluding transportation of equpment etc, to the site of work complete in all respect for the bore drilled by RC rig, as per direction of Engineer-in-Charges. |
| 7 | Pdg slotting arrangement as per IS 8110/1994-997 slot size 1.57x75mm and lowering of 200/175mm dia slotted pipe as per IS as per 4270-2001 with upto date ammendments welded and joints into bore hole in vertical position i/c cost of all cutting, threading and welding of pipe etc within all leads and lifts complete in all respects per directions of the Engineer -in- Charge. |
| 8 | Supplying ,lowering and fixing in position IS marked mild steel bail plug of 200 mm/300 mm diameters with \\"U\\" hooks as per IS 2800-1991 with up to date amendements ,if any, within all leads and lifts, complete in all respects per directions of the Engineer -in- Charge. |
| 9 | Supplying and packing of gravel, consisting of hard quartz or other suitable material with 175mm / 125mm an average specific gravity of not less than 2.5,not containing more than 2% by weight of thin flat of elangated pieces, shall be of sub rounded to rounded grains with minimum angular features of size 2-3.35 mm , shall be free from impurities such as shafe,shale,mica,felspar,clay,sand,dirt loam,haematte and organic material as pe IS 4097-1967 with upto date amendments, if any, around intake of tubewell with minium thickness of shroud around screen generally 100 mm to the entire depth of the bore as per 2800(Part-I ) 1991 with upto date amendments, if any, with in all leads and lifts complete in all respects as per direction of the Engineer -in- Charge. Please Enable Macros to View BoQ information |
