SPECIAL REPAIRS TO BLDG NO P-1 SURGICAL WARD AND FAMILY WARD-II AT MH UNDER GE STM CHENNAI

Amount

BOQ UPLOADED ON 15 DEC 2023

SCH A Part - I (B/R WORKS)

Dismantling floor, hearth or wall tiling including cement mortar bedding (but not backing) and rubbish off the premises

Non-skid Ceramic coloured tiles 7 to 8 mm thick, area of each tiles n exc 0.36 Sqm, in floors etc. set and jointed in neat cement slurry and pointed in coloured cement to match including 15 mm thick screed bed or bedding layer in CM 1:4 for floor finishing complete all as specified and as directed .

Non skid coloured ceramic tiles each tile area (sqr/rectangle) exc 0.06Sqm but not exceeding 0.11Sqm tile thickness 7 to 8 mm, in floors etc set and joined in neat cement slurry and pointed in white or coloured cement to match incl screed bed or bedding layer with CM 1:4 15mm thick for laying floor finishes all as specified .

Glazed coloured ceramic tiles in vertical surfaces 350 x 250 x 7mm / 450 x 350 x 7mm / 450 x 300 x 7mm thick etc, set & jointed in neat cement slurry & pointed in white or coloured cement to match tiles incl 10mm thick backing coat CM 1:3 in dado/skirting

20 mm outer dia 3-layer PPR Polypropylene random copolymer) concealed pipes SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including all PP-R plain & brass threaded polypropylene random fittings fixed complete to walls, ceilings or in floors etc complete all as specified and as directed Note : (i) Cutting chases reqd for concealed pipes at any location including making Good the surface with CM 1:3 is deemed to be included in the rates. (ii) Brass fittings as reqd as per the manufacturers instructions such as Tee, Elbow etc is also deemed to be included in the rates and nothing extra will be paid for the same.

All as per item No 7 here-in-before but 25mm outer dia

Vitreous China wash down water closet (pedestal pattern), white (excluding flushing cistern and flush pipe) incl Pedestal pan and trap, connection to drain (or outgoing pipe) and to flushing pipe, anti syphonage pipe, seat cover etc, complete fixed in repairs all as directed

Vitreous China wash basin ( Make - Prayag (Midas) model No 4642 - Round) with pedastal white (Make Prayag model No 4661 - Round), flat back of size 550x400mm incl 32mm waste coupling Half pop up brass (Cat No BEA 12 of Make Prayag) chromium plated for glazed ware basins and other connections etc., with long screwed shanks and fly-nuts, flange end bedded in red lead cement and other end fixed in repairs complete all as directed by the Eng-in-Charge

Vitreous China Urinal, Half stall type size (345x320x560) coloured/white complete fixing with suitable fixing arrangements to wall with and including CP Brass urinal spreader (Make Prayag Cat No BEA-25) CP domed waste coupling and waste pipe fixed in repairs complete all as directed.

PVC low level flushing cistern 10 liters capacity complete with ISI marked body and ISI marked syphon including 32mm dia flush pipe fixed in repairs complete (Make shall be Parryware Slimline or equivalent)

PVC connection tube 15 mm size with Brass Nut of length 450mm fixed in repairs all as directed (Make - Prayag Cat No BCT-03 or equivalent of makes listed here-in-after)

Angle cock, fancy type, chromium plated, cast copper alloy, screwed down, high pressure with crutch or butterfly handle, screwed both ends for iron pipe or for unions of bore of pipe 15mm fixed in repairs complete all as specified and directed. Make - Prayag Cat No 9210 or equivalent of makes listed here-in-after.

Bib Cock, cast copper alloy chromium plated, fancy type long body with flange, with crutch or butterfly handle, screwed down, screwed both ends for iron pipe or for brass ferrule and fixed of bore of pipe 15mm fixed in repairs complete all as specified and as directed. Make - Prayag Cat No 9208 or equivalent of makes listed here-in-after.

Supply only pillar tap swan neck (T/M), fancy type, cast copper alloy, with capstan heads, chromium plated, screwed down high pressure, with or without lettered 'Hot' or 'Cold' with long screwed shanks and fly-nuts, screwed for iron pipe and fixed of bore of pipe 15mm complete all as specified and as directed. Make - Prayag (CASA) Cat No 9214 or equivalent of makes listed here-in-after.

Wall mixer brass, CP, with provision for overhead shower with bend pipe for mixing of hot and cold water screwed for iron pipe. bore of pipe 15mm as in repairs complete all as specified and as directed. Make - Prayag Cat No 9275 or equivalent of makes listed here-in-after.

Towel rail Brass glossy finish 500mm long with flanges, chromium plated fixed in repairs complete all as specified and as directed. Make - Prayag (SAGA ROUND) ISI Marked Cat No BA-40 or equivalent of makes listed here-in-after.

Overhead shower rose round 100mm ABS with 225mm brass arm Chromium plated fixed in repairs with flange complete all as specified and directed. Make - Prayag Faucets (Cascade) Cat No BOS-87 or equivalent of makes listed here-in-after.

Bib Cock two way double handle with flange, fancy type chromium plated, screwed down, screwed for iron pipe 15mm bore for brass ferrule and fixed in repairs to steel pipe or union complete all as specified and directed by Eng-in-Charge. (Make - Prayag- Cat Part No 9212 or equivalent as per the list of Manufacturers

Health faucet, (ABS) chromium plated, 2 in 1, suitable for 15mm bore of pipe with braided tube length 1000mm with wall hook, water shower gun, washers, connections, brass union etc fixed in repairs complete all as specified and as directed. Make - Prayag Cat No BEA-40S or equivalent of makes listed here-in-after.

Soap dish with glass, glossy finish chromium plated fixed to walls in repairs with chromium plated (CP) brass screws fixed in repairs all as specified and directed. Make - Prayag (DORIS) Cat No BA-15G or equivalent of makes listed here-in-after.

Toilet paper holder of brass, chromium plated fixed to walls in repairs with chromium plated (CP) brass screws. Make - Prayag Cat No BA-08 or equivalent of makes listed here-in-after.

Stainless steel peg set of six fixed in repairs complete all as specified and directed by Eng-in-Charge. (Make - Prayag Cat No BEA-30) or equivalent as per the list of Manufacturers

Corner Glass shelf 300 mm with Brass brackets fixed with and including Chromium plated brass screws and wooden/ plastic cleats (Minimum weight 300gms) fixed in repairs complete all as specified and directed by Eng-in-Charge. Make Prayag Cat No BEA-44 or equivalent as per the list of Manufacturers

Stainless steel sink with drainage board matt finish, 1mm thick, for kitchen, with plugs, waste pipe, waste fittings, washers, including bedding in cement mortar 1:4 on dwarf walls or fixing on and including cantilever cast iron brackets, connecting union to pipe etc, overall size 1143 x 510 x 203)mm with bowl size (510 x 405 x 203)mm fixed in repairs complete all as specified and as directed. Make - Prayag (Solitaire Range) 1200 Series, 304 Super steel, ISI Marked Cat No 1252DM or equivalent of makes listed here-in-after.

Gun metal (Bronze) Gate, globe / Wheel Valve 20mm bore of pipes with iron wheel head screwed both ends for iron pipe and fixed in repairs. Make - Kartar (K604) or equivalent of makes listed here-in-after.

Granite (of any type) work (table rubbed and polished) of 18 - 20mm thick in steps, jambs, pillars, window- cills, cooking platforms and like fixed in cement mortar (1:4) with pointing in white cement (1:2) using marble dust with admixture of pigment to match with shade of granite.

PVC Gully trap with cover of size 125mm including PCC bed fixed in repairs complete all as specified and directed by Eng-in-Charge all as directed.

PVC (SWR) floor trap 110 x 75mm, plain with grating incl jointing with solvent cement etc. fixed in repairs complete all as specified and directed by Eng-in-Charge Make Prayag Item Code No 5791 & 5765 or equivalent of makes listed here-in-after.

PVC (SWR) pipes S/S 75mm bore of type 'B' in any length with rubber ring joints laid in trenches or floors and walls fixed in repairs complete all as specified and directed by Eng-in-Charge. (Make Prayag Cat No - PW 31 or equivalent of makes listed here-in-after.

PVC (SWR) bends 75mm bore fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5711 or equivalent as per the list of Manufacturers

All as per Item No 33 above but with Oval access Door of 75mm bore (Make Prayag Cat No - 5712 or equivalent as per the list of Manufacturers

PVC (SWR) branch piece, single (single Y) equal or unequal 75mm bore with oval acces door fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5742 or equivalent as per the list of Manufacturers

PVC SWR vent cowl 75mm bore fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5761 or equivalent as per the list of Manufacturers

PVC (SWR) pipes S/S 110mm bore of type 'B' in any length with rubber ring joints laid in trenches or floors and walls fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - PW 31 or equivalent of makes listed here-in-after.

PVC (SWR) bends 110mm bore fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5111 or equivalent of makes listed here-in-after.

PVC (SWR) bends with access door 110mm bore fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5112 or equivalent of makes listed here-in-after.

PVC (SWR) Single junction 110mm bore (single T) equal or unequal with acces door fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5134 or equivalent of makes listed here-in-after.

PVC SWR vent cowl 110mm bore fixed in repairs complete all as specified and directed by Eng-in-Charge (Make Prayag Cat No - 5161 or equivalent as per the list of Manufacturers

Taking down chowkats with shutters (without taking off shutters from the frame) area exc 1.5 Sqm and n.exc 4 Sqm each and offered as credit.

All as per item No 42 here in before but n exc 1.5 Sqm each

Taking down shutters of any description n.exc 1.00 Sqm each

All as per Item No 44 above but exc 1.00 Sqm and n exc 2 Sqm each.

Taking down shutters of any description area exc 2 Sqm each and refixing in same opening.

Taking down shutters of any description or type area exc 1.00 Sqm and n.exc 2 sqm and refixing in same opening.

Solid PVC door frame of size 50x47mm made out of 5mm wood grain printed PVC sheet reinforced with MS square tube, in opening & edges will be painted to match with printed sheet as per manufacturers specification and drawing. (Make - Rajashree / GIZA / Black Cobra)

Factory made solid PVC moulded door shutter with woodfree EPS, 28 to 30mm thick (stiles) with 2, 4 or 6 raised panel design with 2mm thick 3D wood grain Moulded PVC Sheet Polyurethane painted on the front & back face as per manufacturers specification and drawing. (Make - Rajashree / GIZA / Black Cobra)

Powder coated aluminium (minimum thickness of powder coating 50 micron) work for doors, windows, ventilators and partitions (Fixed portions) with extruded built upstandard tubular sections / appropriate Z sections and other sections of approved make conforming to IS: 733 and IS:1285, fixing with dash fasteners of required dia and size, including necessary filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing/ paneling, C.P. brass/ stainless steel screws, complete all as specified and directed by Eng-in-Charge.

Aluminium anodised Door shutters with aluminium sections weighing not less than 0.55 Kg/RMtr including snap beading, joining cleats, glazing clips etc., powder coated to minimum 50 micron thickness complete, filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing/ paneling, C.P. brass/ stainless steel screws, complete all as specified and directed by Eng-in-Charge..

Aluminium anodised widow / Ventilator shutters with aluminium sections weighing not less than 0.55 Kg/RMtr including snap beading, joining cleats, glazing clips etc., powder coated to minimum 50 micron thickness complete, filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing/ paneling, C.P. brass/ stainless steel screws, complete all as specified and directed by Eng-in-Charge..

Floor spring hydraulically regulated made up of minimum 1.25 mm thick aluminium alloy sheet foundation box, main body with stainless steel cover, governing pivot made of brass, other parts made of mild steel heavy duty and fixed in repairs complete all as specified and directed by Eng-in-Charge

Hacking out broken glass any thickness, size, quality, from wooden frame/steel frames fixed with putty or with wooden beads.

Sheet glass ordinary quality of 4.80 mm thick exc 0.5 Sqm panes

Toughened clear sheet glass 5mm thick of standard size in square exc 0.5 sq.m in each pane complete all as specified and directed by Eng-in-Charge

Figured glass 4mm thick, pin head type fixed in squares n exc 0.5 sq. m in each pane complete all as specified and directed by Eng-in-Charge

Medium Density Fibre board exterior grade, 12mm thick prelaminated both sides with decorative choice lamination, fixed with neosprene rubber pads to Aluminium frame work as in door shutters and partitions complete all as specified and directed by Eng-in-Charge

Medium Density Fibre board exterior grade, 18/19mm thick prelaminated both sides with decorative choice lamination, fixed with screws to timber frame work as in shelves/ cupboard shutters and partitions in repairs complete all as specified and directed by the Eng-in-Charge

Stainless steel wire cloth 0.36 mm nominal dia of wire and average width of aperature 1.40 mm and fixed with wooden/steel beading to existing steel / wooden windows/ doors/ventilators including taking out old and rusted wiremesh complete all as specified and directed by the Eng-in-Charge.

Butt hinges, extruded Aluminum alloy with galvanised mild steel hinge pin,anodised and fixed, type C-21 of size 100mm complete all as specified and as directed.

Extruded aluminium alloy handles, fabricated type, anodised of size 150mm fixed in repairs complete all as specified and as directed.

Aluminium anodised barrel tower bolts of extruded section 300 mm long all as specified in repairs

Drapery rod 25mm dia, stainless steel grade 304 with two Nos of brackets and finials for each opening as in repairs complete all as specified and as directed. (Make - Vista Levolor / MAC-DÉCOR / DECO Window / Jayesh Metal Corpn (JMC)) Note - (i) Any opening more than 1.80 Mtr shall be provided with additional bracket. (ii) Each opening (Door/ Window) shall be provided with two brackets and finials each. (iii) Cost of Note No (i) & (ii) is deemed to be included in the quoted rates.

Two coats of White wash on Old ceiling surfaces including necessary preprations complete all as directed by Eng-in-Charge.

Complete removal of existing treatment on wall surfaces and applying two coats of distemper oil emulsion over a coat of Chalk whiting over plastered surface including necessary preparation to prepare the surface even and smooth complete all as specified and directed.

Complete removal of old paint by paint removers or burning off with blow lamps and cleaning with scrappers, any number of coats of old wooden surfaces of any description exc 10cm width or girth and applying two coats of synthetic enamal paint over a coat of pink primer all as specified and directed by Engr-in-Charge.

Demolition of brick work or stone/boulder masonry, built in cm incl all quoins, arches, pillars, etc, but excluding ashlar facings, dressed stone work and precast concrete articles

Brickwork with fly ash, old size bricks straight or curved on plan exc 6m mean radius, built in cement moratar 1:6

Brickwork with fly ash bricks, straight or curved on plan to any radius in half brick thick built in cement mortar 1:4 all as specified and directed.

Taking down cement or cement lime plaster, on brick or stone walls,/ceiling etc. including raking out joints, hacking for key, scrubbing down with water, etc.any description

Rendering 15mm thick on fair faces of brick work or concrete surfaces on internal wall surfaces CM 1:6 fair finished even and fair without using extra cement.

Rendering 15mm thick in two coats of 1st coat 10mm thick in CM 1:6, finishing coat 5mm thick in CM 1:4 mixed with Liquid Water proofing compound at the rate of 200ml per bag finished even and smooth with out using extra cement. Note : Water Proofing compound will be measured and paid seperately.

Rendering 10mm thick on fair faces of concrete surfaces on ceiling CM 1:3 fair finished even and smooth without using extra cement.

Three coats of white wash on newly plastered ceiling surfaces including necessary preparation complete all as specified and direced by Eng-in-Charge.

Applying two coats of weather proof paint over a coat of white primer over a coat of chalk whiting incl preparation of newly plastered surface all as directed by Engr-in-Charge.

Preparation of newly plastered wall surfaces and applying two coats of oil bound distemper over a coat of Chalk whiting, over plastered surface to prepare the same even and smooth complete all as specified and directed.

Formwork to sides and soffits of floor or roof beams, beam haunchings, girders, bressummers, lintels, cantilevers, shelves including supports, overhangs, splays between floors and beams, etc. for rough flat finished concrete surfaces

RCC of Type B1 1:2:4 using 20 mm graded stone aggregate as in Beams, cantilevers,bressummers, lintels over 1.5m span all as diretced

Mild steel TMT bars 10mm dia and over of grade Fe 500, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips quality conforming all as specified.

Mild steel TMT bars 5mm dia and over upto and including 10mm of grade Fe 500 dia in stirrups, spacers and binders

Dismantling of Wall and ceiling boards (fibre, pulp, insulation, etc.) or insulation boards / slabs / blankets, any thickness, including cover fillets complete

Grid suspended false ceiling grid system of size 600x600mm with main runner 29x24.7x0.65mm cross tee 29x24.7x0.65mm and wall angle 22.2x22.2x0.50mm. Ceiling suspended with 3mm dia GI wire hanger fixed with steel dash fastner, butter fly clips, hold down clips etc (Main runner, cross tee & wall angle of MS galvanised with PPPCGS) including 10mm thick (min) HPSC self textured design zypsum ceiling board tiles fixed to false ceiling complete all as per manufactuers instructions

SCH A Part -I I (E/M WORKS)

Taking down carefully copper/ Aluminium point wiring (light, fan, socket or power) complete (fitting such as switches, ceiling roses, pendants, regulators, sockets, etc can be measured separately) removing the material from wall/ceiling etc, making good the disturbed surfaces and taken as credit.

Point wiring with 1100 Volts grade 1.5 Sqmm PVC insulated FRLS unsheathed 1100 Volts with multistranded copper conductor conforming to IS:694:1990 with ISI marking (For Phase, Neutral and Earth) in and including Non metallic PVC rigid conduit medium grade with ISI mark of size 20mm dia with all accessories concealed in wall/ceiling /floor/roof etc., including factory made galvanized steel pressed terminal boxes with 2mm thick suitable for fixing modular switches, sockets, fan regulators etc., of suitable modules and the earth wire to be connected to common earth dolly all as specified and directed for the following:-

One light point controlled by one switch.

One ceiling fan point controlled by one switch and one regulator.

One exhaust fan point controlled by one switch.

One 3 pin 5/6 Amps switch socket on independent board.

One 3 pine 5/6 amps switch socket on same board alongwith other switches.

One bell point controlled by one bell push.

One light point controlled by two, 2 way switches

All as per item No 86 herein before but with 4 Sqmm single core PVC cable for one 3 pin 15/16 amps switch socket outlet on independent board.

Taking down sub main wiring (or)power wiring complete upto of 6 Sqmm to 10 Sqmm including PVC conduit removing to stores or taken as credit and making good the disturbed surfaces of wall, etc all as directed.

Sub main wiring with PVC insulated, 1100 volts grade single core multistranded copper conductor cable conforming to IS specifications, 2 runs of 6 sqmm including one run of 6 sqmm earth wire single core multistranded copper conductor PVC insulated cables as earth continuity conductor drawn through and including one run of 25 mm dia rigid PVC conduit and conduit accessories incl accessories fixed on wall/ceiling etc., or concealed in wall, making good disturbed surfaces on walls and connecting to common earth dolly all as specified and directed.

All as per item No 96 herein above but with 4 runs of 6 sqmm and one run of 6 sq.mm earth wire in PVC conduit as specified and as directed.

All as per item No 96 herein above but with 4 runs of 10 sqmm and one run of 10 sq.mm earth wire in PVC conduit as specified and as directed.

Taking down carefully by unscrewing from boards/outlet boxes, wall ceiling fittings and fixtures such as switches, sockets, ceiling roses, lamp holders, with plug, switch fuse and regulators etc., taken as credit and making good the disturbed surfaces of wall etc all as directed.

Ceiling rose 6A 240V 3 plates , 3 terminals PVC/Polycorbanate body.

Modular switch 1 way 6A, 1 module, 230 Volts all as specified and directed.

Modular switch 2 way 6A, 1 module, 230 Volts all as specified and directed.

Modular bell push 6A, 1 module, 230 Volts all as specified and directed.

Modular switch 1 way 16A, 1 module, 230 Volts all as specified and directed

Modular socket 6 A- 2/3 pin combined, 230 Volts, 2 modules with ISI mark all as specified directed

Modular socket 6/16 A- 2/3 pin combined, 230 Volts, 2 modules with ISI mark all as specified directed.

Modular type electronic fan regulator 120 W, 230 volts (2 Modules) stepped and flush type and connecting up etc., complete all as specified & directed.

Modular white cover plate with frame for 2 Module all as specified & directed

Modular white cover plate with frame for 3 Module all as specified & directed.

Modular white cover plate with frame for 4 Module all as specified & directed.

Modular white cover plate with frame for 6 Module all as specified & directed.

Modular white cover plate with frame for 8 Module all as specified & directed.

Lamp holder PVC/Polycarbonate type with back plate batten fittings.

LED Bulb 9 watt with B 22 caps.

LED luminaire 600 mm x 600 mm, 35/36 watt, 220 V AC recessed type with high efficiency PMMA diffuser soft glare free light complete with driver, holders & LED lamp suitable for roof ceiling including connecting up with driver three core flexible copper conductor cases of suitable size complete.

LED lights fitting 1x 22 W, 220V, AC decorative box type with driver, holder including LED tube light connecting up with three core flexible copper conductor cable of suitable size from ceiling rose complete.

LED light fitting mirror type with high out put diffuser 2 feet, 10 watt 220 V AC decorative type with driver holder and LED lamp including onnecting up with three core flexible copper conductor cable of suitable size complete.

Taking down ceiling/exhaust fan, sealing cable end, dismantling blades and removing fan and blades to MES store.

Painting of ceiling fans complete, in situ with synthetic enamel paint by spraying including filling cavities with filler, one coat after cleaning all dust etc.

Refxing serviceable ceiling fan after painting complete all as specified and directed

Painting of Exhaust fans complete, in situ with synthetic enamel paint by spraying including filling cavities with filler, one coat after cleaning all dust etc.

Fixing only exhaust fan after painting and connecting up including provision of cable from ceiling rose/connector to fan.

Taking down MCB DB including inner components and provision of MCB DB TPN 4 way, double door, CRCA sheet, powder coated with high quality weather proof paint, 415 volts, AC, 50Hz, with 200 Amps rated tinned copper bus bar, neutral link, earth link and connecting up complete all as specified and as directed.

Taking down MCB DB including inner components and provision Sheet metal enclosure for MCB DB single pole and neutral 240 volts,double door, 12 way with 200 amps rated bus bar.

Isolator, TPN, 415 Volts, 50 Hz, 63 Amps, 30 mA, 10 kA, complete all as specified and as directed.

Isolator, TPN, 415 Volts, 50 Hz, 40 Amps, 30 mA, 10 kA, complete all as specified and as directed.

MCB SPN (Single pole and neutral) 32 Amps, 240 Volts, 50 Hz, AC supply, "B" curve, with breaking capacity of 10 kA complete all as specified and as directed.

MCB 6-32 Amps, SP, 240 Volts, 50 Hz, AC supply, "B" curve, with breaking capacity of 10 kA complete all as specified and as directed.

Metal enclosure single pole and neutral enclosure with two pin and earth plug and socket with one single MCB 20 Amp 240 Volt all as directed.

Earthing complete with galvanised steel earth plate electrode of size 60 cm x 60 cm x 6 mm thick burried directly in ground vertically to a depth of not less than 2.25 mtr below normal ground level with top edge of earth plate not less than 1.5 mtr below normal ground level, connected to galvanised iron/steel earth wire 4 mm dia by means of bolts, nuts, washers and check nuts made out of galvanised iron, protected by GI pipe light grade 15 mm bore dia and connected to main control board all as shown in Electrical plate No 3 of MES SSR Part I including necessary excavation and earth work in any type of soil, salt, charcoad dust, PCC 1:2:4 type B1 in chamber, RCC 1:2:4 chamber cover with 6 mm dia MS bar at 100 mm centre to centre both ways and MS 6 mm dia hook complete all as specified and directed.

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