PROVN OF HARDSTANDING AT KSP AREA AT SARAIBARI PROVN OF RO PLANT NEAR JCOS OR MD ACCN AT LICHUBARI SPECIAL REPAIRS OF FILTER MEDIA AT PH No 1 n 2 AT ROWRIAH AND PROVN OF POWER SUPPLY FOR NFS NODE AT MARIANI IN JORHAT MILI STN UNDER GE JORHAT

Amount

Surface excavation n.exc (not exceeding) 30 cm deep and averaging 15cm deep and getting out in soft/loose soil, 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 exc 1.5 m in depth and getting out in soft/loose soil ,complete all as specified and directed.

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

Removing excavated soils to a distance not exceeding 50 Metres and depositing where directed at a level n. exc. 1.5 M above the starting point complete all asspecified and directed.

Materials and Labour for sand filling under floors or in foundations including watering and consolidation, complete all as specified and directed.

Materials and Labour for plain cement concrete (1:4:8) Type D-2 using 40 mm graded aggregate in foundations, filling and mass concrete complete all as specified and directed.

Materials and Labour for plain cement concrete (1:2:4) type B1 using 20 mm graded aggregate in lintels up to 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings up to 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs, water troughs and the like including weathering, slightly rounded or chamfered angles and throating, as directed including necessary from work complete all as specified and directed.

Materials and Labour for reinforced cement concrete 1: 2 :4, Type B1(using 20 mm graded aggregated) 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 directed.

Materials and Labour for brick work with Sub Class ‘B’ bricks straight or curved on plan exceeding 6M mean radius built in cement mortar (1:6), complete all as specified and directed.

Dismantling wrought iron or mild steel work of any description not otherwise provided for, complete all as directed.

Materials and Labour for mild steel framed work such as grills, gratings, etc., with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks and similar work conforming to Fe 290, Grade E-165 complete all as specified and directed.

Materials and Labour for rolled mild steel , conforming to Fe 410-W (Grade E-250) quality-A, as in plates (plain or chequered),channels, square cut or notched (ordinary and counter sunk) forming holes,with riveted, bolted or welded attachment, complete all as specified and directed.

Running welding in repairs for thickness of metal to be welded, not exc 6mm, complete all as specified and directed.

Materials and Labour for 150 mm thick plain cement concrete (1:4:8) type D2 using 40 mm graded aggregate as in sub base in floor/paving/hardstanding , complete all as specified and directed.

Material and Labour for Machine Pressed Precast Concrete Interlocking Paver Block ,with grey cement and pigment, any shape and size conforming to IS 15658-2006, of 80 mm thickness, M-40 Grade,laid on pavements, complete all as specified and directed.

Materials and Labour for rendering 15 mm thick, cement plaster, in cement mortar (1:4) on fair faces of brick work or concrete surface in walls,complete all as specified and directed.

Material and Labour for applying three coats of white wash to new plastered surfaces on walls including preparation of surfaces complete all as specified and directed.

Material and Labour for applying two coats of anti corrosive and non toxic black bituminous paint (Compatible with Drinking Water) to internal steel surfaces of existing rapid gravity/pressure filter/IRP/oxidation chamber etc. after complete descaling of surfaces and including preparation of surfaces,complete all as specified and directed.

Material and Labour for applying one coat of synthetic enamel paint to old painted external steel surfaces of existing rapid gravity/pressure filter/IRP/oxidation chamber etc., including preparation of surfaces,complete all as specified and directed.

Materials and Labour for galvanized steel tubing, medium grade, 25 mm bore with all fittings and fixed complete to walls and ceiling or laid in floor, complete all as specified and directed.

Materials and Labour for galvanized steel tubing, medium grade, 50 mm bore with all fittings and fixed complete to walls and ceiling or laid in floor, complete all as specified and directed.

Materials and Labour for galvanized steel tubing, medium grade, 80 mm bore with all fittings and fixed complete to walls and ceiling or laid in floor, complete all as specified and directed.

Supply and Fix, stop valves, cast copper alloy,screwed down, high pressure with crutch or butterfly handle, screwed both ends for steel pipe of for unions, 50 mm bore, complete all as specified and directed.

Material and Labour for 2000 litres capacity rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part – I complete, all as specified and directed.

Materials and Labour for, ball brass valves,high pressure,with polythene float and flynut complete,screwed for iron pipe or brass ferrule and fixed, 25 mm bore and fixed complete all as specified and directed.

Rolling and consolidating soling of broken boulders or quarried stone, not exc 15cm thickness with power roller exceeding 8 tonne and not exceeding 12 tonne, complete all as specified and directed.

Material and Labour for, 150 mm spread thickness,soling (or sub base) with broken boulders or quarried stone, interstices filled, surface formed and rolled and consolidated to required gradient and camber, complete all as specified and directed.

Taking out carefully existing unserviceable filter media from chambers of rapid gravity filter of capacity 10000 GPH and removing from site,complete all as specified and directed.

Taking out carefully existing unserviceable filter media from pressure filter/iron removal plant of capacity 10000 GPH and removing from site,complete all as specified and directed.

Taking out carefully existing unserviceable media from areation tower and removing from site including cleaning the media chamber in the tower internally by descaling, washing down with water,complete all as specified and directed.

Taking out carefully existing unserviceable media from oxidation chamber and removing from site,complete all as specified and directed.

Supply and Fix in repairs, PP/LDPE, 3/8” BSP thread strainer suitable for pressure filter, complete all as specified and directed.

Materials and Labour for filling in,Filtration Media Sand ,effective size 0.35 mm to 0.50 mm,hard and resistant, quartz or quartzite, free from clay, fine particles, soft grains and dirt of every description,conforming to IS 8419, Part-I, inside rapid gravity filter & pressure filter installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Filteration Media Gravel,size 3 mm to 6 mm, consisting of hard,rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind,conforming to IS 8419, Part-I, inside rapid gravity filter & pressure filter installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Filteration Media Gravel,size 6 mm to 12 mm, consisting of hard,rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind,conforming to IS 8419, Part-I, inside rapid gravity filter & pressure filter installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Filteration Media Gravel,size 12 mm to 20 mm, consisting of hard,rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind,conforming to IS 8419, Part-I, inside rapid gravity filter & pressure filter installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Filteration Media Gravel,size 20 mm to 40 mm, consisting of hard,rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind,conforming to IS 8419, Part-I, inside rapid gravity filter & pressure filter installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Manganese Dioxide (MnO2) media, approximate size 20 mm X 24 mm, with MnO2 contents minimum 65%, inside oxidation chamber of size 1400 mm dia. x 1400 mm height installed in PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in, Anthracite coke,hard,compact variety of coal, having a submetallic luster with carbon content between 92.1% and 98%,in aeration towers installed at PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Manganese Dioxide (MnO2) media, approximate size 20 mm X 24 mm, with MnO2 contents minimum 65%, in aeration towers installed at PH No.1 & 2, complete all as specified and directed.

Materials and Labour for filling in,Carbofelt Compound, in aeration towers installed at PH No.1 & 2, complete all as specified and directed.

Supply and Fix in repairs,resilient seated, cast iron, flanged butterfly valve,size 100 mm, PN 1.0, Class 125, with stainless steel shaft, lever operated, ISI Marked (IS-13095:1991, Reaffirmed 2003),including provision of carbon steel nuts, bolts & washers, rubber gaskets etc., fixed to water mains, complete all as specified and directed.

Supply and Fix in repairs, resilient seated, cast iron, flanged double air valve, standard type,for water works purposes, of size 150 mm bore, Class PN 1.0, with in-built isolating valve, end connection flanged, ISI Marked (IS-14845: 2000), including provision of carbon steel nuts, bolts & washers, rubber gaskets etc., fixed to water mains, complete all as specified and directed.

Supply and Fix in repairs, cast iron double flanged, sluice valve, size 100 mm bore, Class PN 1.0, long body type, with brass spindle, CI wheel, ISI Marked [IS 14846-2000(Reaffirmed 2010)], including provision of carbon steel nuts, bolts & washers, rubber gaskets etc., fixed to water mains, complete all as specified and directed.

Supply and Fix in repairs, cast iron double flanged, sluice valve, size 150 mm bore, Class PN 1.0, long body type, with brass spindle, CI wheel, ISI Marked [IS 14846-2000(Reaffirmed 2010)], including provision of carbon steel nuts, bolts & washers, rubber gaskets etc., fixed to water mains, complete all as specified and directed.

Supply and Fix in repairs, cast iron double flanged, sluice valve, size 200 mm bore, Class PN 1.0, long body type, with brass spindle, CI wheel, ISI Marked [IS 14846-2000(Reaffirmed 2010)], including provision of carbon steel nuts, bolts & washers, rubber gaskets etc., fixed to water mains, complete all as specified and directed.

Supply, Installation, testing and commissioning of Chemical Solution Dosing System comprising of dosing pump (suitable for chlorine solution prepared from calcium based granules/solution prepared from Poly Aluminium Chloride (PAC) Inorganic soluble polymer raw water flocculants powder ), AC, single phase, 230 Volts, 50 Hz, electrically operated with high starting torque, having positive displacement diaphragm type accurated by a solenoid solid state pulsar, with discharge capacity of 1 to 6 Litres/Hour of standard mixture of calcium based calcium base chlorine granule with water/PAC with water, of any strength and suitable for injecting chemical mixture at 4 to 6 Kg per sq cm pressure, with provision of polypropylene /LDPE suction and discharge pipes of suitable size and length with swing seal foot valve at bottom end of suction pipe, and with 100 Litres capacity FRP tank with FRP Lid having post hole for pouring calcium based chlorine granules/PAC and water, including provision for mounting the dosing pump on the lid/wall of FRP tank , provision of Level Gauge, Agitator (1280 to 1400 RPM) with shaft and blade in SS 316 (FRP Coated/Epoxy Coated /Plastic Coated) mounted on tank complete with all accessories required for installation as per Manufacturers instructions including supply of 02 (Two) Years normal maintenance Spares i.e. (i) PVC Pump roller tube – 02 (Two) Nos. (ii) Mixing Blade complete with PVC shaft and pin as per Manufacturers instructions – 02 (Two) Sets. and including making provision of mounting the pump set and provision of PCC foundation for placing the FRP tank, complete all as specified and directed.

Supply,installation, testing and commissioning of RO Plant (RO + UF + TDS Controller) fully automatic operation with auto off, 1000 Litres per hour capacity, with centrifugal type raw water feed pump, Dual Media Filter, Activated Carbon Filter,Antiscalent Dosing System with dosing pump & tank, Micron Cartridge Filter, High Pressure Pump, UV System, Instrument Panel, Control Panel, pH corrections, RO membrane element etc., complete all as specified and directed.

Materials and Labour for point wiring with 4.00 Sq. mm (nominal area) FRLSH PVC insulated and unsheathed, multi stranded copper conductor cable 1100 Volts grade, single core, laid in and including PVC casing and capping complete with all fittings and accessories, fixed to walls/ceiling, including sunk type pressed steel terminal boxes 60 mm deep, conforming to IS-5133 (Part-I) with 3 mm thick plastic laminated sheet cover (ISI Marked) for mounting switch/socket outlet etc and including 2.50 Sq. mm (nominal area) FRLSH PVC insulated and unsheathed multi stranded copper conductor cable 1100 Volts grade, single core, earth continuity conductor connected to common earth dolly for one 3 pin socket outlet, 15 amps, independent,, complete all as specified and directed.

Supply and Fix, switch socket combination 2 in 1, 3 pin, 5 and 15 Amp flush type, universal, complete all as specified and directed.

Supply and Fix, sheet metal enclosure for DBs, fitted with Bus Bars, Neutral Links, Blanking Plates and MCCB, 415 Volts, 4 way, Triple Pole & Neutral, Vertical, Double Door all as per Cat No LTVD04MN of Make “L&T” or equivalent Model of Make Seimens/Legrand,complete all as specified and directed. Notes:- (i) MCBs /MCCBs will be measured and paid seperately under respective items of this BOQ/Schedule-A (ii) The DB shall be fitted flush to wall,the quoted rate will be deemed to be inclusive of the rate for cutting chase in existing brick wall built in cement mortar and making good distrubed surfaces.

Supply and Fix, miniature circuit breaker (MCBs) single pole and neutral, 240 Volts,10KA, 32 Amps,complete all as specified and directed.

Supply and Fix, Isolator,single pole, 240 Volts,40 Amps,complete all as specified and directed.

Supply and Fix, Moulded case circuit breakers (MCCBs), AC 415V, 4 pole, with current rating 100 Amps and 16 KA breaking capacity Icu at 415V, with fixed thermal setting and fixed magnetic settings,complete all as specified and directed.

Supply and Fix, On Load Change Over Switch in sheet steel enclosure, Four Pole, Current Rating 63 Amps, conforming to IS 13947 (Part 3)-1993; IEC: 60947-3, complete all as specified and directed.

Supply,laying, jointing and testing of , XLPE insulated, PVC sheathed, armoured, heavy duty electric cables with aluminium conductor for working voltage up to and including 1100 volts, of cross sectional area 16 sq. mm 4 core,complete all as specified and directed.

Supply,laying, jointing and testing of , XLPE insulated, PVC sheathed, armoured, heavy duty electric cables with aluminium conductor for working voltage up to and including 1100 volts, of cross sectional area 25 sq. mm 4 core,complete all as specified and directed.

Supply, Installation, Testing and Commissioning of silent Diesel engine driven generating set, 415 Volts, 3 Phase, 4 wire, engine as per IS: 10001/ 10002 and alternator as per IS: 13364, of capacity 10 KVA, complete with relay panel for automatic starting on mains failure, control panel having meters, sound proof canopy and foundation etc.,complete all as specified and directed.

Materials and Labour for earthing complete with galvanised steel earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground vertically to a depth not less than 2.25 meter deep below ground level with top edge earth plate at a depth not less than 1.5M below normal ground level connected to galvanised steel earth lead wire 4 mm dia. by means of bolts, nuts check nuts and washers of galvanised steel and connected to main switch board or main control board as directed and including provision of concrete pit in PCC (1:3:6) type C1, pre-cast RCC (1:2:4) type B1 cover slab 54 cm x 54 cm x 5 cm reinforced with 8 mm dia. TMT bars @ 150 mm centre to centre both ways, with one handle for lifting made out of 8 mm dia. MS bar, provision of funnel, wire mesh, 20 mm bore galvanized steel tubing (Medium grade) for watering, charcoal or coke and salt in alternate layers, 15 mm bore galvanized steel tubing medium grade for protection of earth lead connection, necessary excavation and earth work in any type of soil and including necessary testing complete all as shown on electrical plate No 3 of SSR Part –I (2009)

A M CHOUDHURY AND CO

M/S D J ENTERPRISE

M D Constructions Co