Tender For Provn Of Borewall Under Ge 874 Ews(Job No: W/Lbcw-Viii/Zangli/2024-25)(Job No: Tpp 2024-25); 1 Material, Labour & T&P (as required) for drilling trial borewell by DTH/ Rotary drilling method of 125mm dia in any kind of soil strata including hard stone/ boulder etc. or any other geological formation at given location all as specified in IS-2800 and as specified and directed for depth n. exc 100 mtrs below ground level complete alongwith water sample testing from Govt. authorised PHE Lab, all as specified. Note :- (a) The work will further execute on sucessfull result of water sample testing from authorised lab as approved by GE.(b) Unit rate include collecting water samples in clean bottle / jar from borewell and getting tested for chemical, bacteriological analysis and PH value from Govt laboratory and submitting the report.(c) Collection and submitting of soil strata at every 10 mtrs depth and every change in strata for entire depth of borewell contained in suitable hard wood box of suitable size for each sample and box shall be fixed with 3mm thick plain glass in front side and writing the details as directed.(d) Removal of mud/slurry from the site shall be deemed to be included in the quoted unit rate.(e) The rate quoted is deemed to include for hire charges of rig, T&P, machinery, fuel charges, labour, consumables, transportation, drilling and operation including use and waste of all necessary appliances and materials in all respects to entire satisfaction of complete work all as directed by Engineer-in-charge. (f) Location of bore well and depth to be dug as recommended by CGWB or BWSSB or any Agency as approved by Govt of India or State Govt body. 2 -Ditto- all as per ser item No 1.0 here-in-before, but depth of borewell from next 100 metre to 120 metre. 3 M&L for development of enlarging of borehole for tubewell by way DTH/ Rotary drilling method and making cavity down below and back wash with heavy duty compressor for 350mm to 450mm dia and upto the depth of 120 metre below ground level in any type of soil/ground strata, complete all as specified and as directed. 4 Supply, assembling, lowering and levelling of 200mm nominal bore (wall thickness 8mm) MS ERW, ISI marked casing blank pipe as per IS-4270-2001 and jointing with electric arc welding, screwed and socketed in random length of 3 mtr to 6 mtr including necessary fittings such as steel sockets, coupling, jointing and painting with two coats of bituminous paint of external surfaces of pipe over a coat of red oxide zinc chrome primer after prepration of surface, complete all as specified and as directed. 5 Supply, assembling, lowering and levelling of 200mm nominal bore (wall thickness 8mm)SLOTTED MS ERW, ISI marked casing blank pipe as per IS-4270-2001 and jointing with electric arc welding, screwed and socketed in random length of 3 mtr to 6 mtr including necessary fittings such as steel sockets, coupling, jointing and painting with two coats of bituminous paint of external surfaces of pipe over a coat of red oxide zinc chrome primer after prepration of surface, complete all as specified and as directed. 6 S&F well cap and clamp of 200mm dia and 100mm depth in two parts made out of 5mm thick MS plate for covering & holding of column pipe of tube well duly welded with locking arrangement by nuts & bolts making holes for passing 2 run of 35 Sqmm flat submersible cable, steel wire rope/chain, complete all as specified and as directed.Note :- Holding clamp for Column pipe made of MS flat 800 mm x 60mm x 12mm thick, 2 Nosshall be provided by the contractor andcost of the same deemed to be included in the quoted rate of item. 7 Development of borewell with compressed air of capacity 200 PSI 900 CFM appropriate capacity as ground till to get the clear water and after with 25% extra capacity pump by pumping muddy water, complete all as specified and as directed. 8 Carrying out yield test for the borewell by continuously pumping for 16 hours to determine safe pumping yield in the presence of departmental representative to determine safe pumping yield / pumping capacity and submitting the test report complete all as specified and directed.Note: T&P required for yield testing shall be arranged by the contractor without any extra cost to Govt. 9 Supply and packing/ filling in layers of Pea Gravel as per IS 4097- 1967 of assorted size M around annular space between the casing pipe and the well surface has to be filled with a gravel pack to act as filter medium in tube well spacing and the size of gravel will be 5 to 10mm, complete all as specified and as directed. 10 Supply, installation, lowering, testing and commissioning of submersible pumping set having 10 stages with stainless steel impeller, outlet size 80mm suitable for casing pipe of 200mm bore, having capacity note less than 18.5KW/25HP5 star rated, 415 Volts, 500 LPM at upto 160 mtr head (As per yield of borewell), stainless steel pump shaft complete all as specified and as directed. 11 Supply, lowering and fixing GI Column pipe heavy duty flanged & drilled ISI marked 100 mm dia,having wall thickness 5.40mm as per IS-1239(Part-I) 2004, 3 Mtr long, GI flange having PCD 125mm and 12mm thick, slots cutting in flanges for passing of submersible cable including all jointing material such as bolts, nuts, washers & packing sheet and connecting compete all as specified and as directed. 12 Supply and lay submersible copper conductor cable 1100 volts grade PVC insulated flexible, PVC sheathed with multistranded copper conductor of size 35 sqmm, 3 core, flat, confirming to IS-694 cutting to required length connecting with necessary end ferrules/water proof joints complete all as specified and directed. 13 S&F star delta Starter 25 HP with, control relays, timers, auto/manual selector switch for suitable rating with ON, OFF, Trip Indicating Light, Push Buttons, Digital metering with CT/PT set, Control MCB etc. fitted in panel board for showing V,I,Hz, Pf complete all as specified and directed- 14 M&L for construction of valve pit of size 75cm x 75cm x 75cm (internal dimensions) 01 brick thick wall masonry including necessary earth work (excavation, returing and removing) in any type of soil and 100mm thick, PCC 1:4:8 type D-2 (using 40mm graded crushed stone aggregate) as in foundations/ lean concrete and 15mm thick rendering in cement mortar 1:4 on external and internal surfaces of valve pit, cover made of 3.15mm thick MS sheet, welded with 40mm x 40mm x 5mm angle iron frame fixed on top of valve pit by means of hold fast 150mm long, hinges, handles and locking arrangement including two coats of anticorrosive paint over a coat of red oxide zinc chrome primer, complete all as specified and as directed. 15 M&L for strata sample box (for keeping 50 samples) made out of 20mm thick veneered particle board and 12mm thick ply wood with 25mmx25mm aluminium angle 2mm thick bearer overall length 1200mm x 750mm x 100mm with front glass sheet sliding type cover with aluminium frame all around 2 Nos key holes plate of size 40mm x 25mm and 3mm thick complete showing name of tube well, location and strata sample with depth complete all as per specified. 16 S&F Gl water tubing 100 mm bore Medium Class, galvanized, with all fittings like socket, union, elbow, bend, tees etc jointed and laid in trenches complete all as specified and as directed by Engr-in-Charge. 17 S&F Cast iron Non-return valve 100mm bore with by pass arrangement, conforming to IS-5312 (2004) Part-I, PN-1.6, complete all as specified and as directed. 18 S&F Cast iron sluice valve 100mm bore flanged both ends confirming to IS-14846(2000), Class PN-1.6 with steel spindle with iron hand wheel including all necessary fixing arrangement such as MS nut, bolt washer gasket etc, complete all as specified and as directed. 19 Excavation in trenches, not exc 1.5mtr wide and not exc 1.5mtr in depth for foundation, for laying pipe lines etc and getting out in hard/dense soil, complete all as specified and as directed. 20 Returning, filling in including spreading, leveling and well ramming in layers not exceeding 25 cm thick each, complete all as specified and as directed. 21 Removing surplus excavated material from site to a distance not exceeding 50 mtrs from starting point and depositing where directed at level not exceeding 1.5 mtr above the starting point, complete all as secified and as directed.
