SPECIAL REPAIR TO BOREWELL IN VAYU VIHAR AT AF STATION ADAMPUR

Excavation in trenches in soft/loose soil not exceeding 1.50 metre wide and not exceeding 1.50 metre in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, pipe line etc. not exceeding 10 Sq.m on plan and getting out complete, all as specified.

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

Removal of excavated surplus spoil to a distance n. exc. 50m and depositing where directed at level not exceeding 1.5 m above the starting point complete, all as specified.

NOTE FOR SERIAL ITEM 1 TO 3 : Excavation & earth work will be carried out by contractor manually and very carefully without endangering existing underground cables, pipe lines and adjoining structures, if any. In case any damage is caused, the same shall be made good by the contractor without any extra cost to the Govt.

M&L for Clean dry sand ( locally available) as cushioning for under ground cable 230 mm thick (one layer of 80 mm thickness before laying the cable and other layer of 150 mm thickness after laying the cable) complete all as specified and directed. NOTE:- Punned down thickness (over all 180 mm) shall be considered for measurement and payment.

M&L for PCC type C-2 (1:3:6), type C-2 using 40 mm graded stone aggregates as in foundation/ platform complete all as specified and directed.

M&L for Brick work using bricks as specified in PS clause 5, straight or curved on plan exceeding 6.00 metre mean radius built in cement mortar (1:6), complete all as specified and directed.

M&L for ,Mild steel work as in joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated) quality confirming to grade Fe-290-Gde E-165, embedded in PCC column/ Bricks including two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer on exposed surfaces and two coats of red oxide zinc chrome primer on surfaces embedded in concrete complete all as specified and directed.

M&L for Rendering 15 mm thick on fair faces of brick work or concrete surfaces, finished even and fair on walls in cement mortar (1:4) complete all as specified and directed.

M&L for Two coats of white wash on new plastered wall surfaces, including preparation of surfaces, complete all as specified and directed.

Supplying and laying un-reinforced precast concrete cable cover, class LV, type 1, flat, size 250mm x 150mm x 40mm complete all as specified and directed.

Boring holes under roads, paths, hardstanding, pavements, runway, taxi track of any desciption by trenchless technology using ultrasound technique or by maual bring method of hole technique for passing pipe lines (any description) of 80 to 200 mm bore pipe and including HDPE pipe of suitable size as required for 0.4 Mpa working pressure complete.

Drilling trial bore (bore hole size 250 mm) for new bore well with reverse rotary combination rig plant equipment through any kind of soil/rock strata, upto 250 metre depth from ground level, including submisssion of graphically recorded strata details and disposal of retrieved material to a distance not exceeding 50 metre, complete.

Expanding trial bore (bore hole size 675 mm) for new bore well with reverse rotary combination rig plant equipment through any kind of soil/rock strata, upto 80 metre depth from ground level, including submisssion of graphically recorded strata details and disposal of retrieved material to a distance not exceeding 50 metre, complete.

S&F Mild steel ERW casing pipe screwed and socketed/welded having wall thickness 8mm as per table 2 of IS 4270, ISI marked , in random length upto 6 metre including necessary fittings and jointing duly painted with a coat of bituminous paint on external surface of pipe, assembling & lowering into bore holes, complete of size: -

250 mm bore, lowering to approx depth of 90 metre to 240 metre from ground level.

300 mm bore, lowering to approx depth of 90 metre from ground level.

Low carbon mild steel slotted (slot size 0.793-1.587 mm) screwed and socketed pipe 250 mm bore having wall thickness not less than 8mm, ISI marked (IS:8110), in random length upto 6 metre including necessary fittings and jointing duly painted with a coat of bituminous paint on external surface of pipe, assembling & lowering into bore holes to approx depth of 90 metre to 240 metre from ground level, complete NOTE: Slot size can be varied depending upon the available strata.

Electro logging in pilot bore for precise delineation of granular zone as also the quality of ground water including report interpretation complete. NOTE:- Electric logging shall be carried out by any Govt approved agency.

S&F 8 mm thick Mild steel bail plug 250 mm dia with heavy duty iron hook screwed and welded to casing pipe, complete.

Well cap suitable for 300mm bore pipe having internal and external threading with rings, ribs and welded iron handle suitable for casing pipe, complete.

Housing clamp 600 mm long, 200 mm wide, made out of 12mm thick MS plate (Set of two Nos) suitable for 100mm dia GI column pipe and 300mm casing pipe including nuts bolts complete.

Packing, pea gravel of size 2-5mm around casing pipe and slotted pipes in the bore, complete.

Development of tube well by means of over pumping high velocity with 600 PSI air compressure all as specified in IS: 8110-2000, complete.

Development of tube well by means of over pumping for subsequent hour unit clear discharge as per 9.3 of IS 2800 (Part-I) 2009 complete.(For two borewell, 8 hour each) NOTE:- Over pumping will be carried out by pumping the well at higher capacity not less 25% the yield of well.

Supply and fix chain pully block of capacity 3 ton and lifting height 6 mtr with extra 5mtr chain complete all as specified and directed.

Galvanised iron 100 mm bore heavy duty, flanged, ISI marked, pipe in 3 metre pieces jointing and lowering into borewell as column pipe with & including suitable size rubber gaskets, nuts, bolts and washers complete all as specified. NOTE: Flanges having thickness not less than 11 mm shall be welded to GI pipe to the entire satisfaction of Engineer-in-Charge.

Fabrication of strata sample box, made out of 20 mm thick veneered particle board and partition with 12 mm thick ply wood with 25 x 25 x 2 mm thick aluminium angle bearer, overall length 1200 x 750 mm with 10 partitions of size 150 mm x 150 mm x 100 mm deep with front glass sheet sliding type cover with aluminium frame all round, 2 Nos key hole plate of size 40 mm x 25 mm x 3 mm, complete all as specified and shown on drawing. Name of tube well, location and strata sample with depth shall be written as directed by Engineer-in-Charge. NOTE: Strata samples and strata chart shall be provided by contractor alongwith the strata sample box without extra cost to the department.

Testing of water for chemical analysis as well as bacteriological potability from any Govt/NABL Laboratory and the report shall be submitted to the department, complete.

Submersible pumping set, 5 stage, of discharge capacity 6000 gallon per hour at 90 metre head, and including 3 phase, 50Hz, 415 Volts, suitable capacity electric motor of the same manufacturers, including MS adopter or reducer, tail piece, flange and all accessories for proper functioning of pumping set etc including installation, testing and commissioning complete.

Supply, installation , testing and commissioning of single head gear motered adjustable dozing pump set Decring dozing Pump (Model- 96NGQ 51), uneffected on dry running having no loss of prime, independent of back pressure and able to handle both chemical solutions as well as suspensions, 230Volts 50 cycles AC, 44 RPM, 1/30 fraction HP having output 2 US GPD to 40 US GPD complete with i.e. tubing,connecting nuts, injecting check valve, ferrule etc consisting of 100 litre PE/FRP tank with PE/FRP Lid & Level Gauge alongwith agitator motor 90watt , 230 Volts (920RPM) with shaft & blade in SS 316 (FRP/Epoxy coated) / Plastic mounted on tank. Lid will have provision for mounting Decring Dozing Pump on the lid/ wall including connection to existing/new pipe line with provision of shelter for dozing tank all as specified and directed by Engr-in-Charge. Make Declibac.

S&F PVC Insulated & PVC Sheathed submersible flat copper conductor cable 3 core of size 10 Sq.mm 3 core, suitable for working voltage 1100 Volts conforming to IS 694 including making connections to motor/starter, complete all as specfied.

Supplying, laying, jointing and testing XLPE insulated heavy duty multi stranded armoured and PVC sheathed LT cable 1100 volts grade with aluminium conductor laid in trenches/ ducts/ along poles/ through pipes of following description: -

95 Sq.mm, 3.5 core

Ductile iron pipes, class K-9, centrifugaly cast, flanged ends, ISI marked in any length, laid in trenches/ducts with & including suitable size rubber gaskets, nuts, bolts and washers complete all as specified, of size: -

150 mm bore

NOTE APPLICABLE TO SERIAL ITEM NO. 31: Excavation & earthwork and supply only DI specials will be measured and paid for separately under respective item of BoQ.

Supply only DI specials/ fittings of any type, radius, angle, tapers, increasing, decreasing sockets, tees, tail pieces, and collars etc complete.

Cast Iron sluice valve flanged type, class PN 1.6, ISI marked (IS- 14846-2000) complete with brass spindle flanged both ends drilled CI gate with brass ring and iron wheel handle complete all as specified with & including necessary flanged joints & jointing material, suitable for DI/CI pipe of size: -

150 mm bore

Supply and Fix Cast Iron Air Valves 50 mm dia bore, PN 1.6 and fixing Up in cast iron water supply mains, complete all as specified and directed.

Supply and Fix cast iron non return valve double flanged /NRV conforming to IS : Class PN 1.6 of size 150mm bore, both ends flanged with holes including provision of carbon steel nuts, bolts & washers, rubber gaskets etc, fixed to water mains, complete all as specified and directed.

Construction of brick masonary valve pit with and including MS sheet cover fabricated from 3 mm thick MS sheet and frame of angle iron 40 mm x 40 mm x 5 mm with fixing arrangement hinges and locking arrangement and painting two coats of synthetic enamel paint over a coat of red oxide primer on MS cover and frame including necessary excavation and earth work in any type of soil, returning, filling in approved soil, disposal of surplus soil to a distance not exceeding 50 metre, 150 mm thick PCC 1:4:8 type D-2 using 40 mm graded stone aggregate as in foundation, brick work using pulverised fuel ash lime bricks in cement mortar 1:6, 15 mm plastering in cement mortar 1:4 both internally and externally, 100 mm thick PCC 1:2:4 type B-1 using 20 mm graded stone aggregate as in flooring complete all as specified, including demolition of existing valve pit having iternal size: --

S&F LT KIOSK panel board, outdoor type, CPRI approved all as specified in particular specifications of contract clause 19.6 including installation, commissioning & testing, comprising the following components/acessories:- (a) Multifunctional meter electronic with suitable CTs, showing Amp, Volt, PF, HZ and other parameter rating Amp upto 300A & volt upto 500V -01 Set. (b) LED indicating lamp for R,Yand B phases-01set (set of three) (c) Internal power & control wiring with suitable size PVC insulated multistranded copper wire (d) Copper bus bar of 160 Amp capacity, 4 strip mounted on porcelain insulators. (e) MCCB 4 pole, 415 volt, 100 Amp, 25 kA -01No. (Incomming) (f) MCCB 4 pole, 415 volt, 63 Amp, 16 kA - 02Nos. (Outgoing). (g) MCB SPN, 32 Amp, 10 kA, 240 volt, C curve - 02 No.(Outgoing). (h) Automatic star delta starter 50 hp complete wiring with 3 nos contactors ML4 with 1 No overload relay, single phase preventor VSP-II, start stop push button with indicators, and digital Amp meter - 01 Set.

Supply and Fix 100mm bore galvanised steel tubing medium grade in twin arrangement as in gravel filling arrangement to borewell, fixed 1m below ground level and 1m above ground level including PCC foundation block of size 1.0mx1.0mx1.2m in PCC 1:2:4 type B2 using 40mm graded stone aggregate , complete all as specified and directed.

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