MAINTENANCE AND REPAIR TO RETRO FITTING, REHABLITILATION OF OLD RCC BLDG STR, OVERHEAD TANK EXTERNAL PLASTER, CAPLING SEEPAGE AND CONNECTED B/R WORKS UNDER TECHNICAL AREA OF AF STN BARRACKPORE UNDER GE (AF) BARRACKPORE

Dismantling of structural steel work including doors, gates but excluding framed truss etc. as in staircase / balcony grills complete all as specified and directed.

Demolition of cement concrete (unreinforced) of any description and in any position not otherwise specifically provided including removal of rubbish from the site complete all as specified and as directed.

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 removing debrish from site complete all as specified and directed.

Taking down unsound and damaged /disressed plaster by dipping with utmost care to expose reinforcement ,cleaning the rusted reinforcement by rubbibg with wire brushes or emery paper and disposal of debris not exceeding 100 m distance complete all as specified and directed.

Separating ,cleaning and scraping of reinforcement etc complete all as specified and directed.

Supply and fix 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 con- forming to Fe.290.Grade-E-165 complete all as specified and directed.

Material and labour for roof trusses (framed), trussed, purlins, crane gantries, rails and fastenings and heavy bracket framing (Beam, tee, angle, channel or flat sections) including distance pieces, cleats etc of Fe 410 -W (Grade-E- 250) of quality-A complete all as specified and directed.

Supply and fix expanded metal (weight not exc 4 Kg per sqm), cut to length, bent to shape required and tying with and including annealed mild steel wire not less than 0.9mm dia or fixing with galvanised steel staples supplied and fixed complete to wood or steel members complete all as specified and directed.

Material and labour for 25mm thick PCC (1:2:4) type B-0 (using 12.50mm graded stone aggregate) as in levelling course for laying floor finishes complete all as specified and directed.

Material and labour for mild steel TMT bar 10 mm dia and over 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 complete all as specified and directed.

Material and labour for mild steel TMT bar 8mm mm dia cut to length bent to shape required, including cranking, bending spirally for hooping ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips. complete all as specified and directed.

Material and labour for applying one coat of anti corrosive primer @ 0.25 liter/sqm or as per manufacturers instructions for the steel area to exposed old and new reinforcement to the full circumferance and length of bars to form unbroken 40 micron thick film complete all as specified and directed. Make: Nitozinc Primer brand of Fosroc or equivalent brand of Asian Paints Ltd / PIDILITE / I-CanNano.

Material and labour for applying one coat of epoxy resin concrete bonding agent @ 0.25 liter/sqm or as per manufacturers instructions to old concrete surfaces of columns ,beams ,chajjas and similar structural members complete all as specified and directed. Make: Nitobond EP brand of Fosroc or equivalent brand of Asian Paints Ltd / PIDILITE / I-CanNano.

Material and labour for 15mm thick rendering in cement mortor (1:4) on RCC roof slab mixed with water proofing compound @ 2% weight of cement or as per manufacturer instruction and finish the surfaces even and smooth without using extra cement on roof including taking down existing cement plaster complete all as specified and directed. Note : WPC shall be deemed included in the quoted rates.

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.

Supply and fix in repair 0.71 mm dia wire netting of galvanised steel wire of size 12 mm mesh fixed with tinned tack of wire staple etc complete all as specified and directed,.

Material and labour for preparation of new plastered surfaces of walls and applying two coats of 100% premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming one coat of exterior primer applied @ 0.90 litre/ 10 sqm complete all as specified and directed.

Material and labour for preparation of new plastered surfaces of walls and applying two coats of acrylic washable distemper over a coat of alkali resistance primer including applying 1mm thick wall care putty complete all as specified and directed.

Material and labour for preparation of new plastered surfaces of ceiling and applying three coat of white wash complete all as specified and directed.

Material and labour for welding work in repairs n. exc 2.5cm in length, thickness of mild steel members to be welded exc. 6mm but not exc. 9mm thick upto G+4 storey bldgs complete all as specified and directed.

Material and labour for preparation of new steel surfaces of any description over 10 cm width or girth and applying two coats of synthetic enamel paint over a coat of red oxide zinch chrome primer complete all as specified and directed.

Material and labour for preparation of new steel surfaces of any description n exc 10 cm width or girth and applying two coats of synthetic enamel paint over a coat of red oxide zinch chrome primer complete all as specified and directed.

Supply and fix in repair 32 mm bore PVC waste pipe 800mm long complete all as specified and directed.

Supply and fix in repair soap dish, brass chromium plated, fancy type, fixed to plugs with chromium plated fixed with brass screws complete all as specified and directed.

Supply and fix in repair 15 mm bore CP fancy type stop valves cast copper alloy, screwed down high pressure with crutch or butterfly handle screwed both,ends for iron pipe or for unions and fixed complete all as specified and directed.

Supply and fix in repair 15 mm bore bib taps fancy type cast copper alloy chromium plated with crutch or handles screwed down, screwed for iron pipes complete all as specified and directed.

Supply and fix in repair 15 mm bore Bib tap standard of PTMT any colour high pressure screwed for iron pipe and fixed (minimum weight -90gms) complete all as specified and directed.

Supply and fix in repair 15mm bore angle cock fancy type cast copper alloy chromium plated with crutch or handles screwed down, screwed for iron pipes complete all as specified and directed.

Supply and fix in repair 15 mm bore PVC connection pipe 600mm long with PTMT nuts at both ends complete all as specified and directed.

Supply and fix in repair 15mm bore fancy type pillar tap 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 complete all as specified and directed.

Supply and fix in repair 15mm bore pillar taps of PTMT any colour high pressure screwed for iron pipe and fixed (minimum weight-110gms) complete all as specified and directed.

Supply and fix in repair 100mm dia grating doom of PTMT (minimum weight 25gms) complete all as specified and directed.

Supply and fix in repair Grating doom 125mm dia with waste hole of PTMT (Minimum weight 40gms) complete all as specified and directed .

Material and labour for treatment of capillary rising damp completely eradicated by introducing an effective i.e capillary sealing, horizontal barrier across the masonry wall not exc 400mm thick by following method :- (i) Drilling : Drilling of holes @ 100mm centre to centre in walls. (ii) Cleaning of all the drill holes with blower and brush. (iii) Fixing of nozzle 12mm dia by mechanically in wall. (iv) Application of wacker SMK 1311, Silicon micro emulsion concentrate, diluting with 1:9 potable water. (v) Diluted SMK 1311, injecting under pressure with airless injection machine to all the drilled holes through 12mm nozzle. (vi) Concerated 100gm (Approx) of SMK 1311 should be injected in each holes. (vii) Leave it to minimum 48 hours time to complete the reaction of SMK 1311. (viii) Filling of the drilled holes by injecting cement slurry with airless injection machine through 12mm nozzle. (ix) Removing the 12mm nozzles from the injected drill holes. (x) Painting work to disturbed portion to match the existing surface complete. Note :- (i) The above work shall be done by the authoriesd applicator as approved by GE. (ii)`All necessary scaffolding shall be deemed to the quoted rate. Make: - Savison Technologies, M/s FOSROC Chemicals , M/s Asian Paints Ltd, M/s STP Ltd, I-CanNano.

Material and labour for repairing of corroded RCC with arresting further oxidation of embedded reinforcement and integral silicone enriched water proofing mortar by following sequence of method :- (a) Cleaning and removing all the loose particles with mild mechanical impact, to open the corroded reinforcement as much as possible. (b) Cleaning with air blower to make the corroded reinforcement dust free. (c) Applying, spraying low vapor pressure hydorcarbon with paraffin and aliphatic hydorcarbon WD40 to clean throughout the rust of the corroded reinforcement through its impregnating behavior. (d) Allowing 24 hours time to complete the action of WD40. (e) Preparing the anticorrosive coating by mixing with 65% of Glycidoxy Functional Silicone resin Waker EPH03 and 35% Liquid Aminofunctional Silicone resin Waker HP 2020 (weight/weight) with required quantity of Xylene to make easily miscible. (f) Providing and applying the above prepared anticorrosicve coating by brusing or spraying, uniformly on the cleaned and rust free reinforcement bars. (g) One hour is the tack free time and 24 hours is he curing time should be allowed. (h) Providing and applying a bonding agent to adhere the old construction and new one. (j) Providing and applying 1% Wacker BS 16 enriched cement mortar with required aggregates to cover up or touchup the open coated reincorcement steels. (k) Providing 15 days time to cure the newly coated layer on the treated RCC. Note:- (i) The above work shall be done by the authoriesd applicator as approved by GE. (ii) All necessary required scaffolding shall be included in the quoted rates. Make: - Savison Technologies, M/s FOSROC Chemicals , M/s Asian Paints Ltd, M/s STP Ltd, I-CanNano.

Material and labour for pressure guniting 30 to 70 mm thick in cement and sand in the ratio of (1:3) to effected area of RCC beams ,chajjas including necessary scaffolding for the height from ground to 15.00 m including 5 mm thick plastering in CM (1:4) with using water proofing compound @3% by weight of cement ,finished even and smooth without using extra cement complete all as specified and directed. Note: - (i) WPC shall be deemed included in the quoated rates. (ii) Sprayset admixture shall be measured and paid seperately under respective items.

Supply only sprayset admixture as approved complete all as specified and directed. Make : Fosroc / Asian Paints Ltd / PIDILITE/ I-CanNano.

Material and labour for applying one coat of latex acrylic polymer based cementitious coating @ 8-10 sqm per litre or as per manufactures instruction over cleaned exposed reinforcement as well as new reinforcement provided for corrossion prevention and fresh plaster bonding to old concrete complete all as per manufacturer's instructions all as specified and directed. Make: - Nitocote AP35 brand of Fosroc or equivalent brand of Asian Paints Ltd / PIDILITE / I-CanNano.

Material and labour for non shrink, cementitious micro concrete mixed with 12.5mm graded stone aggregete using Renderoc RG of FOSROC by weight( 18 kg aggregate :25 Kg Renderoc RG ) respectively or as per manufacturer instructions laid in average thickness 50 to 100 mm in surface of columns ,beams ,chajjas and similar structural members including necessary water tight form work complete all as specified and as directed. Make: -Renderoc RG brand of Fosroc or equivalent brand of Asian Paints Ltd / PIDILITE / I-CanNano.

Material and labour spraying curing compound as per manufacturer's instructions on freshly casted concrete surface complete all as specified and directed. Make: Concrete WB brand of Fosroc or equivalent brand of Asian Paints Ltd / PIDILITE / I-CanNano.

Material and labour for repairs to uneven surface of concrete and reinforcement from drop of fins, facias, chajjas using necessary scaffolding and making good disturbed portion with rendering cement plaster, 10mm thick in cement mortar (1:3) mixed with 1% Nano EHP powder of make- I-CanNano or equivalent brand of Asian Paints Ltd / PIDILITE/ FOSROC, finished even and smooth without using extra cement complete all as specified and directed.

Material and labour for cleaning and desluging of existing SWT (static water tank) of 5000 to 10000 gallon capacity (including removing and refixing of steel frame cover if exist at site) remove complete solid/liquid sluge by pumping or any mechanical means from inside the SWT, remove all dirt/fungle from SWT inside walls by wire brushing, rubbing and repairing the SWT walls in pathces by means of putty/plastering n.exc. 0.50 sqm in each patchese as required and finnaly applying two coats of cement base paint to SWT inside and outside complete and depositing the removed solid/liquid sluge in excavated pits (required size and depth) to a distance n.exc. 50mtr from the SWT. Top layers of excavated pit shall be covered by sprinkling bleaching powder @ 200gms/sqm for disinfection purpose complete all as specified and directed. Note : The rate for excavating pit, bleaching powder and repairing with putty/plaster in patches n. exc 0.50 sqm each shall be deemed to be included in the quoted rates.

All as per item No 43.00 above but SWT (Static Water Tank) of 10000 gallon to 20000 gallon capacity and - ditto-.

All as per item No 43.00 above but SWT (Static Water Tank) of 20000 gallon to 30000 gallon capacity and - ditto-.