COMPREHENSIVE MAINTENANCE AND REPAIRS TO SEWAGE LINES, AREA DRAINAGE, BOUNDARY WALLS, HARD STANDING AND CERTAIN MISC WORKS AT MES KEY PERSONNEL QTRS AT NSB UNDER AGE B/R-II OF GE (NB) VISAKHAPATNAM

Amount

Excavation in trenches n.exc 1.5 m wide and n.exc 1.5 m in depth for foundation, etc and getting out in soft/loose soil complete all as specified and directed.

Excavating in trenches not exc. 1.5 metre wide and exc. 1.5 metre & not exc. 3 metre depth (beyond the first 1.5 metre) for foundation of poles etc and getting out in soft/loose soil complete all as specified and directed.

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

Removing excavated materials exc 1.5 Km but n. exc 5 Km and depositing where directed at a level n.exc 1.5 m above the starting point complete all as specified and directed.

Demolition and breaking 150mm bore drain pipes (SGSW/AC/RCC) set in cement mortar including cement concrete bedding and removal of debris/rubbles etc to a distance outside MD land complete all as specified and directed. (Note: Necessary axcavation and earth work shall be measured and paid seperately)

Demolition and breaking 200mm bore drain pipes (SGSW/AC/RCC) set in cement mortar including cement concrete bedding and removal of debris/rubbles etc to a distance outside MD land complete all as specified and directed. (Note: Necessary axcavation and earth work shall be measured and paid seperately)

M & L for Salt glazed stone ware drain pipes 150 mm bore, grade 'A' laid in trenches, jointed and tested complete all as specified and directed.

M & L for Salt glazed stone ware drain pipes 200 mm bore, grade 'A' laid in trenches, jointed and tested complete all as specified and directed.

M & L for Plain cement concrete 1:3:6, type C-2 (using 40 mm graded stone aggragate) as in concrete bed to drain pipes including packing under and haunching against the sides of pipes after they are laid and tested for 150 mm bore SGSW/RCC drain pipes complete all as specified and directed .

M & L for Plain cement concrete 1:3:6, type C-2 (using 40 mm graded stone aggragate) as in concrete bed to drain pipes including packing under and haunching against the sides of pipes after they are laid and tested for 200 mm bore SGSW/RCC drain pipes complete all as specified and directed .

Opening the cover and cleaning of septic tanks, sumps, manholes etc of any capacity, dewatering foul water and taking out night soil, excreta, sludge, etc by pumping properly and removing and carrying the same to a distance upto outside MD land, burried underground (minimum 30 cm below ground level) including necessary excavation and earthwork in soft/loose soil for pits, returning, filling in including sprinkling bleaching powder @ not less than 0.75 Kg/Sqm and dressing of surplus soil around to slope as required including refixing the cover in position and cleaning the eitre area and making good damaged portion (if any) complete all as specified and directed. (Note : (i) Depth of sludge shall only be measured for volume. (ii): The cleaning work shall be carried out by Honey sucker tanker or similar transporter.)

Cleaning of sewage lines 150 mm bore by rodding from Man holes to enable the sewage to flow freely to the next manholes, inluding disposing off sludge and other materials obtained from the sewage line to a distance outside MD land, burried under ground (minimum 30 cm below ground level) including necessary excavation of pits in soft/loose soil and returning, filling in including sprinkling of bleaching powder at the rate of 0.75 kg/Sqm and dressing of surplus soil around slope complete all as directed by the Engr-in-Charge.

Cleaning of sewage lines 200 mm bore by rodding from Man holes to enable the sewage to flow freely to the next manholes, inluding disposing off sludge and other materials obtained from the sewage line to a distance outside MD land, burried under ground (minimum 30 cm below ground level) including necessary excavation of pits in soft/loose soil and returning, filling in including sprinkling of bleaching powder at the rate of 0.75 kg/Sqm and dressing of surplus soil around slope complete all as directed by the Engr-in-Charge.

Opening the cover and Cleaning of Manholes of internal area n.exc 0.50 Sqm of any depth by pumping out the sewage water completely inluding disposing off sludge and other materials obtained from the manholes to a distance outside MD land, burried under ground (minimum 30 cm below ground level) including necessary excavation of pits in soft/loose soil and returning, filling in including sprinkling of bleaching powder at the rate of 0.75 kg/Sqm and dressing of surplus soil around slope complete all as directed by the Engr-in-Charge.

Opening the cover and Cleaning of Manholes of internal area exc 0.50 Sqm but n.exc 1.5 Sqm of any depth by pumping out the sewage water completely inluding disposing off sludge and other materials obtained from the manholes to a distance outside MD land, burried under ground (minimum 30 cm below ground level) including necessary excavation of pits in soft/loose soil and returning, filling in including sprinkling of bleaching powder at the rate of 0.75 kg/Sqm and dressing of surplus soil around slope complete all as directed by the Engr-in-Charge.

Cleaning/de-silting of lose mud, rubish etc from drain bed including uprooting of vegetation growth thoroughly and wire brushing including flushing with water so as to achieve smoth flow of water in drain and removing rubish outside MD land and depositing in low laying area complete all as directed by the Engr-in-Charge.

Demolition of reinforced cement concrete in any position not otherwise specifically provided for and removing rubbish to outside MD land complete all as specified and directed.

M & L for Precast Reinforced Cement Concrete 1:2:4, type B-1 (using 20 mm graded stone aggregate) as in cover slab (For manhole etc), chullah hoods, chajjas, water troughs, mangers, shelves and similar articles with plain faces and set in cement mortar 1:4 including necessary form, moulds, etc complete all as specified and directed by the Engr-in-Charge. (Note : Reinforcement shall be measured and paid separately)

S & F high strength corrosion resistant TMT steel bars 10 mm dia., and over cut to length, bend 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 0.9 mm dia or securing with clips quality complete all as specified and directed.

M & L for Cutting into existing manholes for connecting new drains, making good to pipe and rendering, cutting out existing benching for and forming branch channel (1/2 round or 3/4 round section) in cement concrete 1:2:4 type B1, smooth finished and reforming benching as required for 150 mm bore of pipe complete all as specifieed and directed.

M & L for Cutting into existing manholes for connecting new drains, making good to pipe and rendering, cutting out existing benching for and forming branch channel (1/2 round or 3/4 round section) in cement concrete 1:2:4 type B1, smooth finished and reforming benching as required for 200 mm bore of pipe complete all as specifieed and directed.

Demolition of un-reinforced cement concrete in ground floors and pavings n.exc 15cm thickness, (Below or above Ground level) and disposal of debris and rubbish to a distance upto outside MD land complete all as directed by the Engr-in-Charge

M & L for hardcore of gauge n.exc 63 mm of broken stone or boulders, deposited, spread and levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface complete all as specified and directed.

M & L for 100 mm thick, Cement concrete 1:2:4, type B-1 (using 20mm graded stone aggregate) as in base of flooring/hard standing, etc, and finished the cement concrete surfaces even and fair without using extra cement complete all as specified and directed.

M & L for Forming Construction joints 30mm deep x 10mm wide, filled with sealing compound Grade 'A' complete all as specified and directed.

M & L for Chequered cement concrete tiles of size 30cm x 30cm x 23-25mm thick, as in floors etc, including 15 mm thick screed bed in cement mortar 1:6 and set & jointed in neat cement slurry and pointed in grey cement and pigments to match with the shade of tiles complete all as specified and directed.

M & L for Sand filling under floors or in foundations including spreading, levelling, watering and consolidation complete all as specified and directed.

M & L for Machine pressed precast conctete interlocking paver block any shape and size confirming to IS 15658-2006 of 80 mm thickness, M-40 Grade with grey cement and pigment complete all as specified and directed.

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

S & F MS steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I.S. 1161-1979 grade St-240 complete all as speicfied and directed.

Dismantling of plain or corrugated steel sheeting, any gauge, thickness, in roof covering including ridges and keeping serviceable sheets in safe custody for reuse in the work complete as directed.

S & F Pre-Painted galvalume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as per manufacturer's instruction complete all as specified and directed.

S & F Pre-Painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in ridges/vally gutter, fixed with self tapping screws as per manufacturer's instruction complete all as specified and directed.

S & F in repair Galvanised 2 strand, steel barbed wire 2.24mm dia barbed with 2mm dia barbs at 75mm spacings and straining and fixing to any type of standard rails straining bolts, including, securing or tying at crossings with and provision of galvanised mild steel wire, staples or steel pins, etc. as directed (each line wire to be measured) complete all as specified and as directed.

S & F in repairs,1050 mm dia punched tape concertina coil as per IS 4454 with galvanised coating and punched tape material as per IS-513 deep drawn quality with galvanising coating , having medium barbs( barb length: 24+ 1 mm ,Pitch between two barbs 35+ 1mm ) fixed in position and secured to both sides of shaped angle iron post , stretched to a length of 6 to 8 metre openable length ( total length 90 m), having 50 nos rounds per 6 metre length, upto 3 m height of wall fixed over angle iron ‘Y’ shaped, Spring core (2.5mm thick) wire of high tensile strength of 165 kg/ sq.mm with tape (0.52 mm thick) to achieve 1050 mm dia as in fencing to steel post and to another coil /MS ribs including fixing with special galvanised fasterners such as 'J' clips , 'C' clips , U clips all as specified and directed (Note : After stretching the coil, the length of the compound wall on which it has been stretched shall be considered for measurement.)

M & L for Mild steel framed work such as grills, gratings, gates etc., with ends of bars shouldered and/or riveted, or forged into spikes, framed guard bar, barred iron doors, ladders, framed balusters, walk ways, railings, framework of water tanks and similar work conforming to Fe-410-0 Gde E-250 complete all as specified and directed.

M & L for Preparation of new steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide, zine chrome primer complete all as specified and directed.

Demolition of brick work or stone / boulder masonry, built in cement mortar including all quoins, pillars etc stacking the serviceable bricks after removing mortar and cleaning for re-use and disposal of debris and rubbish to a distance n.exc 100m as directed by the Engr-in-Charge.

M & L for Walling of random rubble, uncoursed, well bonded, bedded and solidly hearted, built in cement mortar 1:6 as in retaining walls, abutments and similar work complete all as specified and directed.

All as per serial item No. 39 above but except stone complete ditto. (Note: Old serviceable stones as obtained from serial item No. 38 Above shall be re-used under this item after cleaning etc)

M & L for Brick work with fly ash brick, straight or curved on plan exc 6m mean radius, built in cement mortar 1:6 using old size brick complete all as specified and directed.

M & L for Plain cement concrete 1:2:4, type B-1, (using 20 mm graded stone aggregate) as in lintel upto 1.5m span, cills and other similar band, plinth course, parapet, railing upto 60cm height, coping, kneelers, bed plates, hold fast block etc including weathering slightly rounded or chamfered angles including necessary form work complete all as specified and directed.

M & L for Broken glass coping on top of wall in 25mm layer of cement mortar (1:3) with a rounded or weathered finish and before the mortar has set, glass (of bottle or thick glass) broken to approximately 63mm gauge, shall be firmly embedded at the rate of 10 Kg of glass per square metre of rendered surface, jogged edges of the glass being left projecting complete all as specified and directed.

M & L for rendering 10 mm thick on fair faces of brick work or concrete surfaces in cement mortar 1:6 and finished the surfaces even and fair without using extra cement complete all as specified and directed.

M & L for rendering 15 mm thick in two coats (10mm+5mm each) on fair faces of brick work or concrete surfaces in cement mortar 1:4, mixed with integral water proofing compound with weight of cement in top layer as per manufacturer's instructions and finished the surface even and fair without using extra cement complete all as specified and directed. (Note : WPC shall be measured and paid separately against respective item).

Supply only integral water proofing compound (ISI marked) complete all as specified and directed.

M & L for Raised pointing to random or polygonal rubble, uncoursed or brought upto courses in cement mortar 1:4 complete all as specified and directed.

M & L for Precast reinforced cement concrete 1:2:4, type B-0 (using 12.5mm graded stone aggregate) louvres and jallies, 50mm thick including all mouldings and set in cement mortar 1:4 including dismantling of existing one and removing debries upto outside MD Land complete all as specified and directed.

M & L for preparing newly plastered surfaces of internal walls, etc by "Vacuum based sanding machine" and applying two coats of distemper oil emulsion over a coat of alkali resistant primer by "Auto roller" machine complete all as specified and directed.

M & L for preparation new external surfaces of wall, chajja, facia etc by "Vaccum based sanding machine" and applying two coats of water based acrylic weather proof exterior emulsion (exterior wall finish) paint over a coat of primer by "Auto Roller" machine as per manufacturer's instruction complete all as specified and directed.

M & L for preparing newly plastered surfaces of walls, etc and applying three coats of white wash complete all as specified and directed.

S & F in repairs stainless steel (Grade 304) railing made of hollow tubes, channels, plates etc., including welding, grinding, buffing, polishing and making curvature (where ever required) and fitting the same with necessary stainless steel nuts and bolts complete, including fixing the railing with necessary accessories & stainless steel dash fasteners, stainless steel bolts etc., of required size, on the top of floor or the side of waist slab with suitable arrangement. complete all as specified and directed.

M & L for use & waste Form work to fins, louvers, fascia, parapets etc for rough finished surfaces of concrete complete all as specified and directed.

M & L for use & waste Form work to soffits of suspended slabs such as roof slabs, floor slabs, landings and similar work; not exceeding 200 mm thick (Horizonal or sloping) for flat rough finished surfaces of concrete complete all as specified and directed.

M & L for use & waste Form work to chajjas, troughs and similar items including edges flat for rough finished surfaces of concrete complete all as specified and directed.

M & L for RCC 1:1.5:3, type A-1 (Using 20 mm graded stone aggregate) as in Fins, fascias, louvres, parapets, and railings exc. 60cm in height, newels, balustrade, and the like complete all as specified and directed. (Note : Reinforcement will be measured & paid seperately)

M & L Reinforced Cement Concrete 1:1.5:3, Type A-1 (Nominal Mix) (using 20 mm graded stone aggregate) as in chajjas etc complete all as specified and directed. (Note : Reinforcement will be measured & paid seperately)

M & L for Reinforced Cement Concrete 1:1.5:3, Type A-1 (Nominal Mix) (Using 20 mm graded stone aggregate) as in slab supported on walls, beams and columns in floors, roofs, landings, balconies, shelves etc complete all as specified and directed. (Note : Reinforcement will be measured & paid seperately)

S & F high strength corrosion resistant TMT steel bars 6mm to 8mm dia., and over cut to length, bend 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 0.9 mm dia or securing with clips quality complete all as specified and directed.

Complete removing the plants from the surfaces of the building with complete roots, applying recommended chemical to prevent further growth as directed, making good the disturbed surface with cement mortar 1:3 and applying the same surface finish of the existing surface and finished to match with the surrounding surfaces including removal of debris etc., out side the premises complete all as required complete all as specified and as directed.

M & L for preparing old decorated surfaces of walls, etc including cornices by bromming down or by steel wire brushing, scrapping down smokes soot, moulds, moss and efflorscent salt and treating oil and greasy spot and applying one coat of white wash complete all as specified and directed.

M & L for preparing old decorated surfaces of ceiling, etc by bromming down or by steel wire brushing, scrapping down smokes soot, moulds, moss and efflorscent salt and treating oil and greasy spot and applying one coat of white wash complete all as specified and directed.

M & L for Preparation of old painted wood and wood based surfaces of any description, over 10 cm in width or girth, not otherwise described and applying one coat of synthetic enamel paint complete all as specified and directed.

M & L for Preparation of old painted steel surfaces of any description, not otherwise described, over 10 cm width or girth and applying one coat of Synthetic enamel paint complete all as specified and directed.

M & L for preparing old decorated surfaces of wall, etc by "Vacuum based sandng machine" including cornces by bromming down or by steel wire brushing, scrapping down smokes soot, moulds, moss and efflorscent salt and treating oil and greasy spot and applying one coat of distemper oil emulsion by "Auto Roller" complete all as specified and directed.

Taking down cement plaster on brick or stone walls etc including racking out joints, hacking for key, scrubbing down with water and removing rubbish to outside MD land complete all as specified and directed

M & L for rendering 10 mm thick on fair faces of brick work or concrete surfaces in cement mortar 1:6 and finished the surfaces even and smooth without using extra cement complete all as specified and directed.

M & L for preparation old decorated external surfaces of wall, chajja, facia etc by "Vaccum based sanding machine" and applying one coat of water based acrylic weather proof exterior emulsion (exterior wall finish) paint by "Auto Roller" machine complete all as specified and directed.

M & L for preparation old decorated external surfaces of wall, chajja, facia etc by "vaccum based sanding maching" after complete removing old paints by mechanical scrubber without disturbing the plastered surfaces and applying two coats of water based acrylic weather proof exterior emulsion (exterior wall finish) paint over a coat of primer by "Auto Roller" machine as per manufacturer's instruction complete all as specified and directed.

M & L for Obliterating old writing of any description, n exc 0.1 sq. m, with paint to match existing work with synthetic enamel paint complete all as specified and directed.

M & L for Writing letters or figures (Block ,Roman, Italic or Indian) n. exc 30 cm height with synthetic enamel paint complete all as specified and directed.

M & L for Writing stops, commas, short lines , dashes, hyphens, brackets, etc with synthetic enamel paint complete all as specified and directed.

Taking down vitreous China wash basin or sink of any size with backets and refixing in the same position after replacement of brackets as per the existing specification complete all as specified and directed.

M & L for Filling of cement mortar in sides of nahani trap, gully trap, rain water pipes out let etc. in CM 1:3 including WPC @ 2% by weight of cement or as per manufacturers instructions and making good finishes to arrest leakage / seepage complete all as specified and as directed.

S & F in repair Stainless steel wire cloth. 0.36mm nominal dia of wire and average width of aperture 1.40mm and fixed with stainless steel wire staples complete all as specified and directed.

Hacking out old broken glass (any thickness, size, quality or description) from wooden frames or stone, concrete or brick surrounds, glazed with putty or fixed with beads complete all as specified and directed.

Hacking out old broken glass (any thickness, size, quality or description) from metal frame including punching or drilling out old glazing pins/spring clips and providing and fixing new ones complete all as specified and directed.

S & F 4 mm thick, sheet glass, ordinary quality and glazing with wooden beads in square not exceeding 0.5 Sqm in each pane complete all as specified and as directed.

S & F in repairs, vitreous China squatting pan, 'Orissa' pattern, size 580 x 440 mm white with integral foot rest and 'P' or 'S' trap, including provision of lime concrete bedding, connection to trap and flushing pipe etc complete including making good to disturbed surfaces of floor to match with existing specifications complete all as specified and directed.

S & F in repairs, 10 litre capacity, PVC valve less syphonic action type, flushing cistern, low level, white, with inlet, ball valve, flush pipe, float and handle including brackets complete all as specified and directed.

S & F in repair Vitreous China, wash basin, White, flat back of size 450 x 300 mm including cutting for and pinning in ends of brackets or erecting stand but exclusive of waste pipe etc complete all as specified and directed.

Dismantling floor, hearth or wall tiling including cement mortar bedding (but not backing) and disposal of debris and rubbish to outside MD land complete all as specified and directed.

M & L for non-skid, ceramic, coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exc 0.06 sqm but n.exc 0.11 sqm, in floors etc, including 15 mm thick screed bed in cement mortor 1:6 and set & jointed in neat cement slurry and pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

M & L for non-skid, ceramic, coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exc 0.11 sqm but n.exc 0.18 sqm, in floors etc, including 15 mm thick screed bed in cement mortor 1:6 and set & jointed in neat cement slurry and pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

M & L for non-skid, ceramic, coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exc 0.11 sqm but n.exc 0.18 sqm, as in vertical surfaces such as skirting etc, including 10 mm thick screed bed in cement mortor 1:4 and set & jointed in neat cement slurry and pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

Demolition of cement concrete (unreinforced) in any position not otherwise specifically provided for as in roof padding etc including old detoriated roof treatment and bedding layer and removing debries and rubbish to a distance outside MD land complete all as specifed and directed.

M & L for 10 mm thick screed bed in CM 1:4 mixed with WPC as per manufacturer's instructions over 25 mm thick PCC 1:2:4 type B-0 (12.5mm graded aggregate), as in levellig course, Supply and lay polymeric water proofing membrane of weight 3kg/sq.m incorporating a centre core of 90 micron thick HMHDPE film including coating the surface with a coat of water based bituminous primer @ 100gms/sq.m., followed by a coat of blown bitumen of grade 85/25 or 90/15 @ 1.2kg/sq.m. each at top and bottom of the membrane including sealing all joints by thermo fusion with minium 10cm overlap incl grooving & inserting in parapt wall all as per manufacturers instructions and applying two coats of aluinium paint over a coat of primer over the top surfaces complete all as specified and as directed. (Note: WPC shall be measured and paid seperately)

S & F in repairs, stainless steel sinks made of 1 mm thick sheet with plugs, washers and wastes including bedding in ement mortar to dwarf wall or including fixing cantilever brackets and connecting union to pipe, overall size 495mm x 420mm and bowl size 410mm x 330mm x 160mm complete all as specified and directed.

S & F in repairs, 15mm bore, bib taps, fancy type, cast copper alloy, chromium plated with crutch or butterfly handle, screwed down, screwed for iron pipe or for brass ferrule complete all as specified and directed.

S & F in repairs, 15 mm bore, pillar taps, fancy type, cast copper alloy, chromium plated with capstan heads, screwed down high pressure with or without lettered 'Hot or Cold' with long screwed shanks and fly nuts, screwed for iron pipe complete all as specified and directed.

S & F in repair 15 mm bore, angular stop valve, cast copper alloy, chromium plated, fancy type with crutch or butterfly handle, screwed down, screwed for iron pipe or for brass ferrule complete all as specified and directed.

S & F in repairs, 15 mm bore, Stop valves, cast copper alloy, chromium plated with long shank and cup, concealed type, screwed down high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions complete all as specified and directed.

S & F in repairs Hand Shower (Health Faucet) with 1 Meter Long Easy Flex Tube in Chrome Finish & Wall Hook, 15mm bore complete all as specified and directed. (Make: Jaquar Cat No. ALD-565 or equivelant of make as per List of manufacturer's)

S & F in repairs, vitreous China wash basin, size 550 x 400mm, white, flat back including cutting for and pinning in ends of brackets or erecting stand but exclusive of fixing of supply and waste pipe complete all as specified and directed.

M & L for cleaning and degermination inside the RCC/PVC water storage tanks of capacity not exceeding 500 ltr of any description and in any position comprising the following seven stage cleaning and sterilization of water tanks through bacteriological treatment by using TERBAC G5/INCHLOR-5/NB-10, TERBAC G65/INOXI-60/NB-69 and ultra violet rays complete all as specified and as directed. (a) 1st stage: Drain out the water by using exit valve or with high capacity dewatering system or any other suitable method approved by Engr-in-Charge. (b) 2nd Stage: Cleaning all the algae formation inside the tank by using TERBAC G10/INCHLOR-5/NB-10, (a laboratory tested branded chemical) and scrubbing the walls of the tanks. (c) 3rd stage: Cleaning with fresh water by high speed jet pump with pressure of 5 PSI. (d) 4th stage Sterilization by using TERBAC G5/INCHLOR-5/NB-10, (a Laboratory certified branded halogen compound) for first bateria screening. (e) 5th stage: Cleaning the floor of the water tank by heavy duty industrial vaccum cleaner. (f) 6th stage: Sterilizing method by using ultra violet ray Ejector covering 360 degree with in the tank and kills all suspended bacteria for 2nd bacteria screening. (g) 7th Stage: Cleaning and sterilize the floor of the water tank by using laboratory certified branded strong oxidizing agend TERBAC G65/INOXI-60/NB-69 for third bacteria screening. Note:- (i) Test certificate of TERBAC G65/INOXI-60/NB-69 etc from Government Laboratory mentioning suitability for sterilization should be submitted to the Dept before using for Sterilization. (ii) Cleaning of tank shall only be carried by the authorised service provider of the material used. Necessary approval shall be obtained from GE before cleaning of the tanks, (iii) After cleaning of the tank necessary completion certificate confirming the completion of sterilization of water tank shall be issued by the service provider and a sticker shall be fixed on the tank duly mentioning the date of cleaning and name of site etc)

All as per Serial item No. 96 above but PVC tank of capapcity exc 500 and n.exc 1000 Litres complete ditto

S & F 1000 litres capacity rotational moulded polyethylene water storage tanks (Cylindrical vertical with closed top), hoisted and fixed in position including taking down old unserviceable one as specified in SSR Part I and directed.

S & F 500 litres capacity rotational moulded polyethylene water storage tanks (Cylindrical vertical with closed top), hoisted and fixed in position including taking down old unserviceable one as specified in SSR Part I and directed.

S & F in repairs, 20 mm bore, Ball valves high pressure of PTMT with epoxy coated Aluminium rod & high density plastic ball screwed for iron pipe and fixed. (Minimum weight - 210 gms) complete all as specified and directed. (General Notes for all items above: The work has to be carried out upto 14th floor building and the rate quoted shall deemed to be inclusive of all necessary provision for this aspect accordingly)

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