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| 1 | Part A:- Construction and Commissioing of Tubewell |
| 2 | Construction of tube well from ground level & up to 100 mtr depth to accommodate housing and assembly pipe of following sizes in all type of alluvium strataunconsolidated formation such as pebbles, boulders etc. by percussion/rotary drilling method as per IS:2800 Part 1: 1991 andIS:2800 Part II: 1979 (both amended up to date) and technical specifications, with gravel as per IS:4097-1967 and it\"s packing as per IS: 2800 (Part I & II) 1979 as amended up to date (the work includes the cost of gravel & it\"s primary packing and packing during development, lowering of housing & strainer assembly pipes with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles and development work, but excluding the cost of housing and strainer pipe assembly). The work would be completed after obtaining sand free water. |
| 3 | Nominal bore 250 mm dia. |
| 4 | Add 15% extra on above item (Item no 2.1.1 to 2.1.3) for drilling depth beyond 100 mtr and up to 200 mtr, rate shall be applicable for only extra depth beyond 100 mtr and up to 200 mtr. |
| 5 | Add 40% extra on above item (Item no 2.1.1 to 2.1.3) for drilling depth beyond 200 mtr, rate shall be applicable for only extra depth beyond 200 mtr . |
| 6 | Construction of tube well after completion of item no. 2.1 & upto 100 mtr. depth and abovein all type of rocks by DTH systemas per IS : 2800 (Part I & II) 1979 as amended up to date. The work would be completed after obtaining sand free water. The tube well should have a throughout bore as per nominal bore of casing pipe. Nominal bore 200 mm dia. |
| 7 | Testing verticality of tube well by plumbing system and yield test and draw down test by pumping system as per IS : 2800 (Part – II) – 1979 as amended up to date. |
| 8 | Development of tube well as per IS: 11189- 1985 and IS: 2800 (Part- I)- 1991 (both amended up to date) using suitable compressor to give sand free water for required yield of the gravel packed tube well. |
| 9 | Providing, installing, testing and commissioning of double flanged bulk flow meter with removable mechanism, of class B conforming to ISO 4064/1 or amended upto date of approved make including cost of all material andlabouras per specifications with GI Box (sheet 16 SWG) suitable with locking arrangement of following dia. 65 mm dia |
| 10 | Supply of ERW M.S. black casing pipe ISI marked (IS: 4270/2001) or amended up to date of grade Fe 410 offollowing sizes250 mm dia NB (Thicknee of pipe 7.1 mm & mass of tube 46.57 Kg/m) |
| 11 | Labour charges for making slots on blank pipes made of ERW MS black pipe ISI marked of following sizes, the slotting should be as per IS:8110-1985. 250 mm dia nominal bore of 7.1mm thickness |
| 12 | Supply & Installation of 3 phase ISI marked submersible motor pump set offive star rating by BEE and as per IS: 8034-2011 (pump) and IS 9283-2013 (motor) or amended up to date of approved make of following duty condition with required accessories including making connection suitable for tube well/DCB. The job includes lowering of motor pump, installation of complete fitting & accessories, jointing of electrical cables up to switch board, testing of submersible pump set and interconnection up to water mains, complete in all respect.13 KW (17.5 HP) & head above 120 mtr. |
| 13 | Supply and Fixing of electric control feeder panel comprising of suitable rating MCCB , fully automatic star-delta starter, over load relay,ampere meter with CTs, volt meter, phase preventor, suitable starting capacitors, phase indicators, lighting arrangement etc complete suitable for three phase pump set. The panel should have space for energy meter ( supplied by DISCOM).All these equipments shall be housed by panel box made out from 18 guage M.S. Sheet with powder coating. Panel should be ofminimum size 900 x 600 x 450 mm with Stand ( made of angle iron of size 35x35x5mm) duly bolted/screwed with enclosure box having 4 legs, each leg’s length 18\" and double door including in built locking system.The legs should be embedded in M-15 cement concrete plat form.The size of CC plateform should be equal or bigger than the base size of panel having height of at least 200 mm from ground level. The panel should have opening of suitable size in front of space for energy meter with glass for meter reading. The operation of panel should be suitable for on 440 Volt AC Supply. Above 15 HP |
| 14 | Supply & Fixing of ISI marked three core PVC flat submersible cableas per IS 694:1990 or amended up to date and conductor as per class 5 of IS 8130:1980including making connection etc. 3 core 10.0 mm2 |
| 15 | Supply & Fixing of PVC insulated sheated (heavy duty) armourd electric cable with aluminium conductor for working voltage to Is:7098 Part-I/IS :1554 Part-I applicable. 3.5 core 35.0 mm2 |
| 16 | Supply & Fixing tube well coverof MS sheet 8mm thick at top & 5mm thick 100mm wide shroud around the edge so as to form a cap on the top end of casing pipe with GI Nipple 45cm long & two GI flanges at both end in 80mm sizes passing through a hole in the centre of MS sheet. A 25mm socket with end plug shall also be welded over top plate (as per drawing enclosed). A GI nipple having outside thread of size 1/2\" (for installation pressure gauge) shall be provided & welded with 80mm GI nipple near top plate nipple shall be provided with end plug. 250 mm dia |
| 17 | Providing & Lowering in tubewell ISI marked GI Pipe “B\" class as per IS:1239 or amended up to date threaded and double flanged (welded) on both ends and two number25x3mm flat welded on both ends between pipe & flange, rubber washer & nut bolts etc. complete in all respect. 65 mm dia |
| 18 | Providing & Fixing of double flanged, CI body, ISI marked NRV of approved make of following sizes 65 mm dia |
| 19 | Supply & Fixing M S clamp set of 50x6 mm flat from iron with nuts and bolts etc for holding the riser pipe assembly of submersible pump set. |
| 20 | Supplying & Installing 100 mm diameter sealed diaphragm bourdon type pressure gauge of range 0 to 10 kg.including all jointing material as per specification with safety cover. |
| 21 | Maintenance of tubewells which includes round the clock monitoring oftubewells of all sizes, completerepairs /rewinding ofsubmersible pumpsets including cost ofmaterial components required to repair pumpsets, starters, meters etc. of electric panel of tube wells, Lowering and unlowering of pumpsets complete in all respect, maintenance of log-books & Histroy sheetas directed by Engineer-in-charge for tubewell per month.(ForRural Scheme where three phase electric supply is up to 8 hrs)16.0 HP to 25.0 HP |
