PROVN OF BORE WELL IN SFQ AREA AT AIR FORCE STATION KALAIKUNDA

Amount

M&L for Resistivity test to be carried out by Geological Departlment and report to be submitted before drilling the bore well complete all as specified and as directed. Note : (i) Before drilling the bore contractor has to carry out site survey and electrical resistivity test/ survey for ground water exploration to be carried out of minimum 6 points in and around said locations in area to obtain max ground water potential and report of the same has to be submiited to GE for taking approval of site/ point with maximum water poitential for boring. (ii) All necessary arrangment, test/survey done by the contractor and cost for same to be included in unit rate. No extra charge will be paid by the contarctor.

M&L for Drilling trial bore hole by reverse circulation method/direct rotary method in any type of soil, including rocks, complete all as specified in IS 2800 for 200mm dia upto 200m depth complete all as specified and as directed Note : Contractor shall carry out log test during drilling of bore and report for the same as well as litho chart, yield test, draw test report to be submitted to GE. All necessary arrangement, test/survey done by the contractor and cost for same to be included in unit rate.

M & L for Enlargement and development from ground level to 60m depth of the same trial bore by drilling by reverse rotary circulation method / direct rotary method from dia 200mm to 500mm complete all as specified and as directed. Note : Casing pipe, slotted pipe, pea gravel and fittings shall be measured and paid separately.

M & L for Enlargement and development from depth exceeding 60m but not exceeding 200m of the same trial bore by drilling by reverse rotary circulation method / direct rotary method from dia 200mm to 500mm complete all as specified and as directed. Note : (i) Casing pipe, slotted pipe, pea gravel and fittings shall be measured & paid separately. (ii) In case additional developing of trial bore is required due to site condition beyond 200mtrs, the same will be measured and paid for under this item.

Supply, welding and lowering in position 250mm (internal bore) ERW MS casing pipe (Conferming IS:4270-2001) of wall thickness not less than 8 mm , pipe with plain ended collar welded in suitable lengths all as specified and directed by the Engr-in-Charge. Note : Before lowering of MS casing pipe in bore, pipes to be jointed with one another at site by welding process. All necessary arrangement of welding to done at site by contractor and cost for same to be included in unit rates. No extra charge will paid by department.

Supply, welding and lowering in position 200mm (internal bore) ERW MS casing pipe (Conferming IS:4270-2001) of wall thickness not less than 8 mm , pipe with plain ended collar welded in suitable lengths all as specified and directed by the Engr-in-Charge. Note : Before lowering of MS casing pipe in bore, pipes to be jointed with one another at site by welding process. All necessary arragment of welding to done at site by contractor and cost for same to be included in unit rates. No extra charge will paid by department.

S&F MS reducing socket size 250 x 200 mm not less than 8mm thick complete all as specified and directed. Note :- All necessary welding arrangement to be done by the contractor for jointing reducer socket with MS casing pipe at site.

M & L for performing yield test for the bore well by continuously pumping for 16 hrs to determine safe pumping yield complete all as specified and directed by Engr-in-Charge. Note:- (1) Alignment (vertically) Test and Step down test shall be carried out in the bore well constructed and result submitted to GE. (ii) After boring and developing the bore, contractor has to test the water sample of bore for chemical and bacterioligical test for certification as safe portable drinking water, from NABH/Govt approved lab and test report to be submitted to department. (iii) All necessary arrangement, test/survey done by the contractor and cost for same to be included in unit rate. No extra charge will paid by department.

Supply, welding, lowering and fixing in position heavy duty MS ERW strainer slotted pipe (8") 200mm internal dia 8 mm thick having slot required size 0.75mm including jointing & welding complete all as specified and directed by the Engr-in-Charge.

Supplying and placing pea gravel packing (gravel size 3mm to 8mm) through out annular space of the tube well assembly complete all as specified and directed by the Engr-in-Charge.

S&F Top cap for (250mm) bore with 8mm thick MS plate for tube well complete all as specified and as directed.

Developing tube well with contractor's own compressor of suitable capacity under his own arrangement with required plants & equipments, tools & sockets till sand/mud free water for potable quality is obtained minimum upto 24hrs & after developing, tesitng of yield incl draw down test, vertically test & required performance test complete all as specified and directed by the Engr-in-Charge.

S & F MS column pipe 100mm dia bore, 10 feet long each with flanges screwed and welded both ends complete with nuts, bolts, gasket etc lowered into bore well complete all as specified and directed by Engr-in-Charge. (The pipe shall be heavy duty not less than 6 mm thick of wall conforming to IS-1239 (Part-I) of 1979 and the flanges shall have grooves to accommodate the submersible cables and sling wires)

Supply , lowering, testing and commissioning of 20 HP Submersible pump having brass impeller and sufficient stage to suit the discharge capacitiy 800 LPM & 72 m head with outer dia of pump shall not be more than 150 mm & directly coupled with water cooled AC 3 phase 50 HZ, 440 volts electric motor complete all as specified and directed. Note : (i) The submersible pump set should be guaranteed for all defects for 01 year. In case of burn out within one year the same shall be replaced with new motor complete all as specified and directed.(ii) Slection of pump discharge to be finilised base on yield test report of bore.Before procurement of pump contractor has to submit the specification of submersible pump and make and take approval of GE. However the head of pump should not be less than 72 m. HP of pump shall be calculated according to pump discharge and head.(iii) Submersible pump shall have brass impeller and sufficient stage to suit the required head of 72 mtrs and outer dia of pump shall not be more than 150mm.

M&L for steel wire rope 10mm dia with clamps of suitable size securing the submersible pump motor complete all as specified and as directed.

Supply and fixing PVC insulated & PVC sheathed Submersible flate cable 6 Sqmm x 3 core copper conductor 1100 volt grade, ISI Marked, confirming to IS:694/2010, complete all as specified and as directed.

Supply , fixing , testing & commissioning submersible pump starter in sheet metal enclouser , type MU-G , fully automatic , Star Delta Starter suitable for 20 HP / 15KW Submersible Pump set , 3P , 415 V , 50 Hz , with max relay range 28-42 Amp , Dry run protection, with over load , single phase and phase reversal protection with on / off switch , indicator and Voltage & Amp indication complete including fixing of starter at location as directed by Enginner- In -charge including making all necessary connections of cable from source & submersible pump complete all as directed. Make:- L&T Cat No-SS95975 Type MU-G 20H or equivalent in C&S/ BCH.

S&F non return valve CI heavy duty 150mm dia double flanged including rubber gaskets, bolts, nuts, washers etc for jointing/connection complete all as specified ans as directed.

S&F Cast iron sluice valve 150mm dia, cnforming to IS 14846 both ends flanged with brass spindle, Class PN 1.6 with & including necessary nuts, bolts, washer, gasket complete all as specified and as directed.

Construction of brick masonry valve pit of size 120cm x 120cm x 90cm (internal dimensions) with one brick thick wall in cement mortar 1:4 on 100 mm thick P.C.C. 1:4:8 type D2 (using 40mm graded broken stone aggregate) as in foundation lean concrete, including PCC 1:3:6 type C-1 (using 20mm graded crushed stone aggregate) as in bedding and coping and 10mm thick cement plaster in CM (1:4) internally and externally up to 15cm below ground level providing valve pit 40 x 40 x 6mm angle iron flame all-round the fixed point by means of 4Nos holdfast 150mm long made out of flat iron 40 x 6mm embedded in PCC block (1:2:4) type B-1 (using 20mm graded crushed stoned aggregate) of size 23 x 200 x 100mm including provision of hinges welded with angle iron frame and MS cover 3mm thick, MS handle of suitable and size welded with MS cover and suitable locking arrangement including 65mm dia Godrej pad lock and applying two coats of synthetic enamel paint over a coat of red oxide primer including necessary excavation and earth work in soft/loose soil complete all as specified and directed.

Supplying welding and lowering bail plug having not less than 3.00 mtrs long and (200mm) bore dia MS ERW pipe having wall thickness 8 mm including 2 coats of black bituminous paint over a coat of red zinc oxide primer complete all as specified and as directed by Engr - in - Charge.

M & L for 150 mm bore cast iron pipes with flanged ends centrifugally cast Class 'B' in any length laid in trenches complete all as specified and as directed. Note : Excavation, earthwork shall be measured & paid separately under relevant items of this schedule.

M & L for bends,Taper ,Tee pieces (signla & double branch) any type and angle/radius and straight conneting pieces but all ends fianged upto 150mm bore complete all as specified and as directed.

M & L for joints with rubber or fibre board gaskit for 150mm bore flanged pipe and fitting complete all as specified and as directed.

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

Excavating in trenches, n exc 1.5m wide & exc 1.5m but n exc 3.0m in depth; for foundation etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10sq m on plan & getting out in soft/loose soil, complete all as specified and as directed.

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

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

M&L PCC in foundations, filling and mass-concrete type C2 (1:3:6) using 40 mm graded stone aggregate, complete all as specified and as directed.

Surface excavation n.exc 30cm deep & averaging 15cm deep and getting out in soft / loose soil, complete all as specified and as directed.

M&L RCC type B1 (1:2:4) using 20 mm graded aggregate in Foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, etc.; basement slabs, under reamed piles and mass concrete, complete all as specified and as directed.

M&L RCC type B1 (1:2:4) using 20 mm graded aggregate in Columns, pillars, piers, posts and struts, complete all as specified and as directed.

M & L for formwork to sides of concrete foundations, footings, bases of columns, raft & raft beams, sides & soffits of foundation & plinth beams; and similar work; verticle or to batter Fair finished surfaces of concrete flat, complete all as specified and as directed.

M & L for formwork to sides of pillars, posts, struts, piers,columns, and stanchions Rough finished surfaces of concrete circular on plan, complete all as specified and as directed.

M&L Mild steel Derformed or twisted bars 10mm dia & over,cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends & binding with & including mild steel wire (annealed) not less than 0.9mmdia or securing with clips quality, complete all as specified and as directed.

M&L Mild steel Derformed or twisted bars 5mm dia & over upto & including 10mm dia in stirrups, spacers & binders, cut to length, bent to shape required, binding with & including mild steel wire (annealed) not less than 0.9mmdia or securing with clips quality, complete all as specified and as directed.

M & L for brickwork with fly ash bricks, straight or curved on plan exc 6m mean radius, built in CM (1:6), complete all as specified and as directed.

M & L for rendering 15 mm thick cement mortar 1:4 on brick or concreet surfaces finishing surfaces even and fair without using extra cement, complete all as specified and as directed.

M & L for maroom/red bajri filling in floors or pavings, laid in layers n exc. 15 cm thick spread, levelled & rammed including watering, complete all as specified and as directed.

M & L for hardcore of Broken stone/boulders gauge n exc. 63mm, deposited, spread & levelled in layers n exc. 15 cm thick, watered & rammed to a true surface, complete all as specified and as directed.

M&L 100mm thick PCC type B-2, (1:2:4) using 40mm graded stone aggregate as in sub base, complete all as specified and as directed.

M&L 75mm thick PCC type B-1, (1:2:4) using 20mm graded stone aggregate Finished even & smooth without using extra cement, complete all as specified and as directed.

S&F Glass dividing strips, 3mm thick & inserted in position to conform to design width of strip 38 mm, complete all as specified and as directed.

M & L for applying two coats of cement base paint, white or tinted on new wall surface including preparation of surface, complete all as specified and as directed.

S&F Rolled mild steel Joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lenghts i.e. within 20mm of the length indicated) GDE Fe 410-0 W (Gde E-250) quality A, complete all as specified and as directed.

M & L for applying two coats of synthetic enamel paint on steel & iron surfaces of any description, not otherwise, described, over 10cm width or girth including preparation of new surface & applying one coat of red oxide, zinc chrome, complete all as specified and as directed.

S C TRADING COMPANY

SANKAR TRADERS