SPECIAL REPAIR TO ROOF OF CERTAIN OTM BUILDING AT AF STATION BARRACKPORE UNDER GE (AF) BARRACKPORE.

Amount

Complete removal of existing roof treatment in any layers and disposal of debris from site complete all as specified and directed. Notes: - (a) The rates are inclusive of removal for any type of old water proofing treatement over main RCC slab. (b) Bidders are advised to visit the site and esure about site condition before quoting their rates. (c) Demolition of PCC shall be measured and paid saparately under respective items.

Demolition of cement concrete (un-reinforced) of any description and in any position including removing debris from site of work complete all as specified and directed.

Material and labour for PCC (1:2:4) type B0 (using 12.50 mm graded stone aggregate) mixed with water proofing compound @ 200 ml per bag of cement or as per manufacturer instruction as in levelling course to match undulation of roof, in coving, roof kerbs including benching or mud stops, rounded or chamfered on edges etc including necessary form work and finished the rough surface complete all as specified and directed. Note : WPC will be measured and paid separately under respective item.

Material and labour for 5mm thick rendering in cement mortar (1:3) with using water proofing coumpound (WPC) @ 200 ml per bag of cement or as per manufacturers instruction on roof top while concrete is green to become integrated part of concrete padding layer and finish the surfaces even and smooth without using extra cement complete all as specified and directed. Note : WPC will be measured and paid separately under respective item.

Taking down cement plaster of any description built in cement mortar on brick or stone walls etc including racking out joints, hacking for key, scrubbing down with water etc. and removal of rubbish from the site complete all as specified and directed.

Material and labour for 15mm thick rendering on fair faces of brick work or concrete surfaces in cement mortar (1:4) and finish the surfaces even and smooth without using extra cement as in wall complete all as specified and directed.

Material and labour for 10mm thick rendering on fair faces of brick work or concrete surfaces in cement mortar (1:6) and finish the surfaces even and smooth without using extra cement as in wall complete all as specified and directed.

Material and labour for 5mm thick rendering on concrete surfaces in cement mortar (1:3) and finish the surfaces even and smooth without using extra cement as in ceiling complete all as specified and directed.

Cutting grooves in brick wall, 75mm wide and 65mm deep and shaping horizontal face of groove with cement mortar (1:3) complete all as specified and directed.

Material and labour for water proofing treatment to RCC roof surface comprising with the following course of treatment/specifications from bottom to top :- (a) Applying cold bituminous primer @ 0.30 liters per sqm confirming to IS 3384 over plastered surfaces of roof. (b) One layer of APP based polymeric membrane 3mm thick, weight not less than 3.50 kgs per sqm, reinforced with non woven polyester matt central core fabric (weight not less than 160 GSM) and coated on both side with and including layer of APP modified bitumen and finished with and including micro-prefabricated heat fusible polythene film on both surfaces. (c) Applying one coats of hot bitumen 85/25 grade @ 1.20 kg per sqm over membrane surface. (d) Finally applying two coats of aluminum paint @ 0.10 ltrs per sqm per coat on top surface. Contd...

Note:- (i) The work shall be executed only through authorised applicator of manufacturer as approved by GE. (i) Laying of APP based polymeric membrane shall be done by torch on method or as per manufacturers instructions. (ii) A minimum overlap of 150mm and 100mm should be made in the end and sides of the polymeric membrane respectively and sealed all overlaps and joints as per manufacturers instructions. Make of APP membrane:- Super Thermolay of M/s STP Ltd, Hyperplas of M/s IWL India Ltd, Hydrostop of M/s Tiki Tar Danosa (India) pvt ltd, , M/s FOSROC Chemicals, Smartcare APP membranes of M/s Asian Paints Ltd.

Supply only liquid water proofing compound (WPC) complete all as specified and directed.

Disconnecting existing tanks of capacity exc 1000 ltrs and n. exc 2000 ltrs including float valve, setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position complete all as specified and directed.

Supply, hoist and fix 1000 litre capacity rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling of old unseviciable existing tank complete all as specified and directed.

Supply and fix in repair 110mm bore PVC (SWR) pipes single socketed in any length with rubber ring joints including all fittings fixed to walls or laid on floors or in trenches complete all as specified and directed.

Supply and fix stack clamps suitable for 110 mm bore pipe made out of 50 mm by 5 mm flat iron and 16mm dia round iron stays, including bolts and nuts and securing ends of stays to wall or roof complete all as specified and directed.

Supply and fix in repair 110mm bore PVC (SWR) bends of any radius complete all as specified and directed.

Dismanting of plain or corrugated steel sheeting, any gauge, thickness, including Nainital or similar pattern roof coverings complete all as specified and directed.

Supply and fix 0.50mm thick pre-painted galvalume aluminium Zinc coating GI based corrugated / semi corrugated steel sheet of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as per manufacturer instruction complete all as specified and directed.

Supply and fix 0.50mm thick pre-painted galvalume aluminium Zinc coating GI based plain steel sheet of any colour having tensile strength of 550 Mpa as in roof covering/ cladding to wall, fixed with self tapping screws as per manufacturer instruction complete all as specified and directed.

Dismantling of wall and ceiling boards (fibre, pulp, insulation, etc) or insulation boards / slabs / blankets any thickness, including cover fillet / snap grid complete all as specified and directed.

Supply and fix of suspended ceiling system with 9mm thick gypsum board edge tiles of size 593mm X 593mm with GI prelude section of 24mm face exposed grid of 600mm X 600mm (nominal). The tile shall have smooth vinyl laminated visual with washable metalised polyster foil backing & vinyl covered edges. The tile shall be laid on prelude 32 with 24mm wide T-section flanges colour global white (matching to tile colour) having roll formed double stroke rotary stitching on all T-sections i.e. the main runner 1200mm & 600mm cross Tees with a web height of 38mm (all sections). The perimeter trim to be wall angles of size 19mm X 19mm, secured to walls using screws at 450mm c/c maximum. The Tees, wall angle and the suspension system material shall be hot dipped galvanised steel of 90 gsm as per IS-277 (2003) and prepainted steel with baked polyster paint with OT bending capability. The grid shall be suspended with the accessories consisting of M6 anchor fasteners with hanger hole, pre straightened hanger wire of 2.5mm of required length (max 1.8m) having tensile strength of 344-413 Mpa (optionally, adjustable hook clips made of 0.7mm thick Grade 1- C55 galvanised spring steel of dimension 100mm X 20mm and 4mm aquiline wire to be used for level adjustment of main runners). The installation shall be carried out as per manufacturer's recommended procedure complete all as specified and directed. Note: (i) Work shall be executed through authorised applicator of OEM as approved by GE. (ii) Make: Armstrong/ Saint GobAin/ Lafarge.

Material and labour for preparation of new plastered surfaces of walls and providing and applying plaster of paris putty of 1 mm thickness over plastered surface to prepare the surface even and smooth and applying two coats of distempering with 1st quality acrylic distemper (ready mixed) having VOC content less than 50 gms/litre, of approved manufacturer, of required shade and colour complete, as per manufacturer's specification complete all as specified and directed.

Material and labour for preparation of new plastered surfaces of ceilings and applying two coats of acrylic washable distemper over a coat of alkali resistance primer complete all as specified and directed.

Material and labour for preparation of new plastered surfaces of walls and applying two coats of premium acrylic smooth exterior paint with silicone additives of required shade @ 1.43 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm complete all as specified and directed.

Materials and labour for complete removal of existing treatment on ceilings and applying two coats of acrylic washable distemper over a coat of alkali resistance primer including preperation of surface complete all as specified and directed.

Materials and labour for complete removal of existing treatment on walls and applying two coats of distempering with 1st quality acrylic distemper (ready mixed) having VOC content less than 50 gms/litre, of approved manufacturer, of required shade and colour complete, as per manufacturer's specification including preperation of surfaces complete all as specified and directed.

Material and labour for cutting out cracks to V section grooves on roof top and external surface of wall up to 10mm to 15mm depth and 30mm width and filled with multi purpose binder (MPB) crack filler and rendering the surface in cement mortor (1:3) complete all as specified and directed. Make:- FOSROC/ PIDILITE/ ASIAN/SIKA/STP Note:- The cost of scaffolding/staging shall be included in the quoted rates.

Material and labour for providing name plate of size 900mm X 600mm with 20mm thick plaster in CM 1:4 on external surface of walls of the buildings and engraving/ embosing with name of contractor, CA No., date of completion and expiry date of gurantee period and Bldg/Qtr No. complete all as specified and directed.

Material and labour for light/fan point wiring (concealed type) with single core PVC insulated unsheathed multistranded FRLSH copper conductor cable of 1100 volts grade size 1.5 sqmm (nominal area) in and including 20mm dia heavy duty rigid non metalic PVC conduit with accessories including 1.2mm thick pressed steel terminal boxes in recess to existing wall surface with 3mm thick bakelite sheet top cover (ISI marked) fixed with chromium plated brass screws and cap washers suitable for housing switches, sockets and regulators with all fittings and fixing materials with one single core PVC insulated unsheathed multistranded FRLSH 1.5 sqmm (nominal area) copper conductor as earth continuity wire and connected to earth dolly including taking down old existing unserviceable point wiring with all fixtures such as switches, sockets etc. complete all as specified and directed. Note: Red coloured cable shall be used for live connection, black coloured cable shall be used for neutral connection and green coloured cable shall be used for earthing. Separate cable for earthing and neutral to be used for each individual circuit from the distribution board.

All as per item No. 30.00 here-in-before but for one five pins 5 Amps switch socket outlet point on independent board and -ditto-.

All as per item No. 30.00 here-in-before but for one five pins 5 Amps switch socket outlet point on same board and -ditto-.

All as per item No. 30.00 here-in-before but for 15 amps switch socket outlet with 2.5 sqmm PVC insulated (FR-LSH) unsheathed copper cable multistranded conductor 1100 volts grade including 2.5 sqmm PVC insulated (FR-LSH) unsheathed copper cable multistranded conductor 1100 volts grade as earth continuity conductor and connecting to common earth dully and -ditto-.

Supply and fix switch piano flush type one way 6 amps 240 volts, single pole complete all as specified and directed.

Supply and fix switch socket combination 2 in 1, 5 pin , 6 amps flush type complete all as specified and directed.

Supply and fix socket outlet 2 in 1, 5 pin , 6 amps flush type complete all as specified and directed.

Supply and fix switch socket combination 5 in 1, 6/16 amps flush type complete all as specified and directed.

Supply and fix ceiling rose, 3 terminals, fabricated of PVC/Polycarbonate, isolated body complete all as specified and directed.

Supply and fix delux stepped type electronic fan regulator flush type on the existing phenolic laminated sheet etc complete all as specified and directed.

Supply and fix in repair LED lights fittings with extruded aluminium housing, high quality PC diffuser, efficacy- 125lm/W, 20 watt, 220V, AC, 3000K, CRI ≥80, integrated design including connecting up with 3 core flexible copper conductor cable of suitable size from ceiling rose complete all as specified and directed. Make:- Crompton /Wipro / Philips/ GE.

Taking out old serviceable light fittings of any description from the existing wall/ceiling and kept in safe custody for re-use complete all as specified and directed.

Refixing of old serviceable light fittings and connecting with new 3 core flexible copper conductor cable of suitable size to the existing ceiling rose complete all as specified and directed.

Supply and fix in repair LED street light fitting 30 Watt 230 V AC outdoor type with high pressure die cast housing toughened glass, 5700K, IP 66 protection inbuilt surge protection, efficacy ≥ 110LPW, high powered LED complete all as specified and directed. Make:- Crompton /Wipro / Philips/ GE.

Supply and fix in repair switch socket combination 5 in 1, 6/16 amps flush type complete all as specified and directed.

Supply and fix in repair switch piano flush type one way 6 amps 240 volts, single pole complete all as specified and directed.

Material and labour for street light bracket made of 1.5 meter long GI pipe of light grade of 40 mm dia in proper shaped, bend, threaded and drilling holes for wire entry and MS clamps of flat iron of size 40x5mm of suitable length in 2 pairs incl nut bolts etc of suitable size including taking down old unserviciable street light bracket cmplete all as specified and directed.

Supply and fix in repair 36 W recessed LED ceiling light with glare free uniform illumination, white powder coated CRCA housing, efficacy > 100 lm/W suitable for 600 x 600 mm (2 feet x 2 feet) grid ceiling complete with all accessories including internally prewired connecting upto 3 core twisted flexible copper conductor cable of suitable size complete all as specified and directed. Make:- Crompton /Wipro / Philips/ GE.

Taking down GI / copper / aluminium strip including air termination of any specification and kept in safe custody of the contractor and refixing the GI / copper / aluminium strip including air termination after repair in existing location complete all as specified and directed.

Taking down air termination rod alongwith fixing arrangement of any specificationand kept in safe custody of the contractor and refixing the air termination after repair in existing location complete all as specified and directed.

Material and labour for earthing complete with GI earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground with earth pit not less than 2.25 meter deep below ground level with top edge of plate not less than 1.5 meter below normal ground level connected to GI earth strip of size 32 x 6 mm earth lead by means of nuts, bolts, check nuts, washers of galvanised iron as steel, protected by 40 mm bore HDPE pipe of pressure rating 6 kgf/sqcm including cement concrete (1:3:6) type C-1 earth pit with precast RCC (1:1.5:3) type A-1 cover slab of size 42 x 42 x6cm thick reinforced with 8mm dia TMT bars @ 15 cm c/c both ways with 10mm dia mild steel round bar of 30 cm long, bent to shape as lifting handle, funnel, wire mesh, 20 mm bore galvanized iron pipe (medium grade) for watering, charcoal or coke and salt in alternate layers with necessary earth work in soft/loose soil complete all as shown in electrical plate No 3 of SSR Part-I including testing on completion including taking down existing earthing set complete all as specified and directed. Note:- GI strip upto 7.5m length including testing shall be included in quoted rates.

Material and labour for galvanised iron strip of size 32 x 6mm buried in ground or fixed on wall after taking down old unserviceable strip complete all as specified and directed. Note : Joining of GI strip shall be made by welding.

Material and labour for aluminium strip 25 x 3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground after taking down old unserviceable strip complete all as specified and directed. Note : Joining of aluminium strip shall be made by brazing/soldering.

Material and labour for copper strip 20 x 3 mm buried in ground or fixed on wall after taking down old unserviceable strip complete all as specified and directed. Note : Joining of copper strip shall be made by brazing/soldering.

Material and labour for PCC (1:3:6) type C-2 (using 40 mm grade stone aggregate) as in foundation, filling and mass concrete complete all as specified and as directed.

Supply and fix in repair 50mm dia high density polyethylene pipes (HDPE) with fittings, PN-10, laid in trenches or on walls, ceiling or in floors etc complete all as specified and directed.

Material and labour for test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw for lighting conductors including taking down old existing unserviciable termination block complete all as specified and directed.

Material and labour for air termination single pointed copper rod,12mm dia and 300mm long including necessary fixing arrangment using clamps,nuts and nuts including taking down old unserviceable air termination rod complete all as specified and directed.

Supply and fix in repair porcelain insulator for supporting or passing or copper/ GI/ aluminium strip from roof / wall including necessary nuts and bolts complete all as specified and directed.

Materials and labour for cutting, welding, bending of MS flat iron of size 30x3mm for making clamps of required shap and size as per site condition including nut & bolts and applying two coats of synthetic enamel paint over a coat of zinc chrome primer including dismantling of existing unserviceable clamps complete all as specified and directed.

Material and labour for painting of earth pit cover by two coats of synthetic enamel paint after cleaning earth pit properly with iron wire brush including numbering of earth pit on indicating board as per colour code complete all as specified and directed.

Material and labour for welding to GI earth strip joints including replacement of existing nuts bolts joints complete all as specified and directed.

Material and labour for soldering/brazing to copper/aluminium earth strip joints including replacement of existing nuts bolts joints complete all as specified and directed.

Supply and fix in repair thermoplastic enclosure box of size 300x150x170mm with opaque lid fasteners for tool operation protection of IP-66 for fixing of test point terminal box complete all as specified and directed. Make:- HENSEL / SINTEX / C&S

BHAUMIK CONSTRUCTION

Das and Brothers

KAZI ENTERPRISE

NC BOSE AND CO

SITARAM CONSTRUCTION

BISWAS CONSTRUCTION

CHANDRA CONSTRUCTION AND CO