GE I R AND D/CHD-96/2022-23

Amount

Material and labour for boring of trial bore hole 250mm bore at given site perfectly vertical with direct or reverse rotary rig circulation method or any latest technology, through any kind of strata of the layers to the complete depth including submitting the strata details duly graphically recorded and carrying out electronic log test etc complete all as specified and as directed for the following depths:- (a) Drilling from ground level up to 60 metre depth. Note :- (i) (appliacble for item no 01 to 07) : Direct drilling or reverse rotary combination rig plant of suitable capacity along with necessary tools/eqipments for drilling borewell shall be arranged by contractor under his own arrangement . Hire charges for the Rig plant and its transportation to site and removing from site after completion of the work shall be deemed to be included in the unit rate of item and nothing extra shall be payable on this account. (ii) The contractor quoted rates shall be deemed to be included for removable/disposal of retrieved soil/spoil etc to a distance not exc 50 mtr from the starting point. (iii) The work shall be carried out at places as directed by GE/Engineer-in-Charge. (iv) The contractor shall make his own arrangement to store/transport the water required for drilling and deptt will provide water point for tapping of water only at available source all as specified and directed

All as per Serial Item No 1.00 above but depth exceeding 60 Mtr and n. exc 120 Mtr -ditto-

All as per Serial Item No 1.00 above but depth exceeding 120 Mtr and n. exc 180 Mtr -ditto-

All as per Serial Item No 1.00 above but depth exceeding 180 Mtr and n. exc 250 Mtr -ditto-

Material and labour for reaming of 250 mm bore by enlarging to 675 mm dia , suitable for lowering ERW MS casing pipe and gravel packing for required length upto 100 Mtr complete all as specified and as directed. Note: ERW MS casing pipe and gravel packing shall be measured and paid separately

Material and labour for reaming of 250 mm bore by enlarging to 525 mm dia , suitable for lowering ERW MS casing pipe and gravel packing for required length complete all as specified and as directed for the following depth:-Note: ERW MS casing pipe and gravel packing shall be measured and paid separately (a) Depth of bore exceeding 60 Mtr and n. exc 120 Mtr deep.

All as per Serial Item No 3.00 above but depth exceeding 200 Mtr and n. exc 250 Mtr deep -ditto-

Supply, assembling and lowering into bore holes 350 mm dia MS casing pipe screwed, socketed and welded, ISI Marked, ERW in random lengths upto 06 Mtrs long, heavy duty with wall thickness not less than 8 mm incluidng necessary fittings (i.e MS sockets) and jointing from ground level duly painted with two coats of bituminous paint on external surfaces of pipes complete all as specified and directed.

All as per Serial item No 4.00 above but slotted pipes having vertical slots 1/16" wide and 3" long.

Supply, assembling and lowering into bore holes 250mm dia MS casing pipe screwed, socketed and welded, ISI marked, ERW in random lengths upto 06 meters long, heavy duty with wall thickness not less than 8mm including necessary fittings (i.e MS sockets) and jointing from ground level duly painted with two coats of bituminous paint on external surfaces of pipes complete all as specified and directed.

All as per Serial item No 5.00 above but slotted pipes having vertical slots 1/16" wide and 3" long.

Development of bore well by air compressor of capacity 200 PSI 900 CFM as required on ground, till to get the clear water complete including carrying out yield test complete all as specified and directed. Note : Yield test shall be carried out during developing of bore well. The rates qouted against this item shall deem to be included for yield testing.

Material and labour for borewell cap 8 mm thickness, suitable for MS ERW casing pipe 350 mm dia and duly drilled for 100 mm dia GI medium grade column pipes including locking arrangement with top end of the casing pipe complete all as specified and directed.

Material and labour for bail plug 250 mm dia, one metre long made of MS ERW pipe of 8 mm thickness with strong iron hook, screwed and duly welded to lower most end of casing pipe complete all as specified and directed.

Supply and fixing for MS reducer of wall thickness 8 mm screwed at both ends of size 350 x 250 mm including necessary fittings and jointing at appropriate length complete all as specified and directed.

Supply, fixing and lowering of MS centering guide into borewell, made out of flat MS ribs suitable for 350 / 250 mm dia MS casing pipes complete all as specified and directed.

Supply and fixing for housing clamp 150cm long in two halves 20cm wide, made out 20mm thick MS plate for 350mm dia MS casing pipe with necessary bolts and nuts with twin washers at ground level embedded in plain cement concrete block up to 1.4 cum of (1:2:4) type B-1 using 20mm graded stone aggregate complete all as specified and directed.

Supply and packing pea gravels of size 5mm to 10mm of approved quality, duly washed, in packing around casing pipe and slotted pipes in the bore complete all as specified and directed.

Fabrication and supply of strata sample box, made out of 20mm thick veneered particle board and partition with 12mm thick plywood with 25 x 25 x2mm thick plywood with 1200x750 mm with 10 partitions of size 150 mm x 150x100mm deep with front glass sheet sliding type cover with aluminium frame all round, 2 Nos dey hole plate of size 40 x 25 x 3mm complete all as specified (Name of tubewell, location, strata sample with depth shall be written on box as directed by Engineer- In - Charge). Note: Strata chart and casing asssembly chart on good quality glazed paper of size 80 x 30 Cm duly framed, shall be provided by the contractor alongwith strata sample box without any extra cost to Govt.

Testing of tubewell with heavy duty pump of appropriate capacity but not less that 70 Cum per hour(20000 GPH) upto 24 hour or more, so as to obtain the water sand/silt free up to 20 PPM and as approved (Test record for the same duly signed by contractor and Engineer-in-Charge shall be kept on record) complete all as specified and directed.

Testing of water samples of bore wells for potability by chemical analysis as well as bacteriological potability from Govt Laboratory and submission of the report complete all as specifed and directed Note: Water sample shall be collected in 3 bottles and sealed for Lab Testing duly signed by Contractor and GE.

Electronic logging by means of electric logger for the total depth of tube wells submission of 4 copies of logging sheet alongwith one original copy and its interpreation complete all as specifed and directed Note: The borehole shall be electrically-loggedfor precise delineation of aquifer and the water bearing zones available which are to be tapped.

Supply and fixing for CI sluice valve of 100 mm bore size with stainless steel spindle and brass check nut, with operative iron wheel, with flanged ends, class PN 1.6 conforming to IS-14846/2000, ISI marked including all jointing materials such as rubber gasket, nuts, bolts and washers etc, complete all as specified and directed.

Supply and fixing for CI Non retun valve of 100mm bore size with flanged ends, ISI marked including all jointing materials such as rubber gasket, nuts, bolts and washers etc, complete all as specified and directed.

Material and labour for PVC insulated copper conductor flat submersible cable 1100 volts grade of 16 Sqmm 3 core size duly connected and lowered with submersible pump set, complete all as specified and directed.

Material and labour for earthing with 600 x 600 x 6.0 mm galvanised steel earth plate electrode, buried vertically in ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of the plate at a depth not less than 1.5 m below ground level, connected to and including GI Strip of size 32 x 6 mm by means of bolts, nuts and check nuts and washers of galvanised steel (and 50 mm dia GI light grade pipe for protection of GI strip) to the extent of 7.5 metres as earthing lead and connecting to the equipment viz transformer, L.T panels etc. including charcoal dust and salt packed all around the earth plate in the earth pit all as per electrical plate No. 3 of SSR - 2009 Part - I including earthing chamber made of plain cement concrete 1:2:4, type B1 with mild steel angle iron frame, C.I Cover with provision of locking arrangement and 20 mm dia light grade GI Pipe from top edge of the earth plate upto mild steel funnel with wire mesh provided inside the concrete earth pit for watering arrangement complete including excavation and earth work in any type of soil / strata and testing complete all as specified and directed. Note: - The unit rate includes GI strip & Protection pipe upto to 7.5 mtr length from the top of earth plate.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 70 sq mm 3.5 core.

Supply, installed & commissioning Automatic chemical dozing system to inject solution upto 20 Lph comprising dosing pump coupled with single phase AC motor ,230 V,50 Hz,0.5 HP,1440 RPM ,10 Bar assembly with agitator in one motor ,agitator with SS sweep blade duly FRP coated,FRP tank 150 ltr capacity comple unit mounted on heavy duty MS fabricated frame duly anticorrosive paint , suction or discharge tubing of 3 mtr long, NRV including all necessary fittings with connected accessories like rain proof gaured ,level gauge,valve complete all as specified and directed

Supply snd fixing of pressure gauge 4 inch dial 0-14 Kgs rating complete all as specified and directed.

Material and labour for lowering into borewell 80 mm dia GI medium grade column pipe with flanged ends, including jointing materials such as rubber gasket 4 mm thick, nuts, bolts and washers etc complete all as specified and directed.

Supply ,installation, testing and comisioning of submersible vertical type pumping set having for 350/ 250 mm borewell discharge capacity 350 LPM at 160 mtr to 220 mtr head (head and discharge decided as per yield test of borewell) coupled with electric motor 3 phase, 415 volt ,50 Hz of suitable capacity in HP to drive pump delevering water up to suitable head ,all as specified and directed

Material and labour in replacement for ductile iron pipe spigot and socket ,S/S including special class "K-9" of 100 (4") bore conform toIS 9523-2000, including complete with all fitting laid in trenches,jointed(welded) tested and commissioned laid, jointed and tested all as per IS –12288-1987.

Supply and fixing for pipes galvanised "Medium grade" laid in trenches complete including fitting of size 80 mm (3") bore complete all as specified and directed.

Cutting of cast iron/DI pipes of size 100 mm bore in position for insertion of tee, collar, NRV etc complete all as specified and directed.

Material and labour for replacement of cast iron Air rlease valve with flanged end and jointing materials such as nuts,bolts,washers etc of following sizes 50 mm dia.

Material and labour for CI /DI fitting i.e. bends (any type,radius and angle) tapers any type (straight,bend,increasing,decreasing or double socket etc.) tee pieces, single branch,Y junction,double branch,cross ( all socket or socket and spigot ) collars,caps and plugs upto 150mm dia CI pipe lines complete all as specified and directed.

Material and labour for Construction of brick masonry valve pit complete including necessary excavation and earth work complete all as specified with internal dimension 120 x 120 x 90cm (type 'B') including MS sheet cover 3mm thick with black paint on cover and welded with hinges on angle iron frame 40x40x6mm with hold fast grouted in 100mm thick PCC (1:2:4) type B-1 coping on top of brick wall including necessary locking arrangement complete all as specified and directed

Excavating in trenches n exc 1.5 m wide and n exc 1.5 m in depth; for foundation etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc1.5 m in depth and getting out in in soft / loose soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm complete all as specified and directed.

Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and directed.

Material and labour for sand cushioning to under ground cables 8 cm thick before laying the cable and 15 cm, thick after laying, stretching and testing the cable complete all as specified and directed

Sub class ‘B’ bricks old size. laid dry flat over the cable abutting each other, length of cable equal to width of brick as cable cover all as required.

shree balaji builders

Bharat Enterprises