Corporation Of Chennai Tender

Roofing with galvanised corrugated iron sheets (thickness of sheet 0.8mm) including J bolts and nuts with bitumen washers etc. complete (ISI STD)..

FALSE CEILING WITH GYPSUM BOARD Providing and fixing suspended false ceiling using SAINT - GOBAIN GYPROC or Equivalent make which includes providing and fixing GI perimeter channel of size 0.50mm thick having one flange of 20mm and another flange of 30mm and a web of 27mm along with perimeter of ceiling, screw fixed to brickwall / partition with the help of nylon sleeved and screws at 610mm centres. Then suspending GI intermediate channels of size 45mm, 0.9mm thick with two flange of 15mm each from the sofit at 1220mm centres with ceiling angle of width 25mm x 10mm X 0.55mm thick fixed to sofit with GI cleat and steel expansion fasteners. ceiling section 0.55mm thickness having knurled web of 51.5mm and two flanges of 26mm each with lops of 10.5mm are then fixed to the intermediate channel with the help of connecting clips and in direction perpendicular to the intermediate channel at 610mm centres. 12.5mm Gypboard is then screw fixed to ceiling section with 25mm dry wall screws at 230mm centres. Screws fixing is done mechanically suitable attachment, finally the joints are to be finished with joining compound and paper tape and including Painting with two coat of plastic emulsion paint over one coat of primer.

Brick work in second class bricks (9x4 3/8 x 2 3/4) in C.M.1:4 ( 1 cement and 4 Crushed Stone Sand (Commercially called M-Sand)) including curing,etc.,complete for 23cm thick walls upto basement (upto 1m high above G.L.).

Plastering with cement mortar 1:4 (1 cement and 4 p- sand)12mm thick including curing, etc., complete.

White washing two coats over new plastered surface..

Painting the new plastered walls with two coats of Exterior emulsion paint (weather proof ) first class quality and of approved colour over a priming coat including thorough scrapping clean removal of dirt etc. complete and including necessary plaster paris putty etc. wherever required.as per (ISI STD) (It must provide excellent resistance against the growth of algae and fungi on the walls. And it must offer excellent protection against alkali and UV degradation and the durability period should be 5 years..

Retro - Fitting Works: - Methodology Severity - High (Internal Spalling or Hollowness found on the surface (Beams, Columns, Ceiling and walls) a.Remove the plastering wherever there is dampness/spalling/hollowness in the surface completely using hacking tools and the surface to be free from dust, laitance, oil, grease, algae, fungus and any other foreign material, prior to application. b.Removing the existing deteriorated reinforcement and supply and placing of new rebars of 10 mm diameter including cutting, bending and straightening and placing in position complete in all levels and if necessary, welding the new bars with the existing Rods by over lapping with all lead and lift etc. complete (If the rebar is corroded more than 35% of its original size) c.Providing and applying Epoxy Zinc Rich Primer and mixing mechanically until it is homogenous and applying the same as one rich coat on reinforcement complete with all lift etc. complete. (If corrosion found on rebars) d.Providing and applying a coat of two-part solvent free epoxy resin-based bonding agent on the wall at rate of 2-3 Sqm/kg inside the cracks. e.Providing and applying plastering on the walls using polymer modified plaster with CM 1:4 admixed with SBR Latex or equivalent @ 2 kg per bag of cement with suitable quantity of clean water. (All chemicals shall be used from Pidilite or equivalent brand)

Retro - Fitting Works Methodology Severity - High (External Spalling or Hollowness found on the surface, Beams, Columns Ceiling and walls) a. Remove the plastering wherever there is dampness/spalling/hollowness in the surface completely using hacking tools and the surface to be free from dust, laitance, oil, grease, algae, fungus and any other foreign material, prior to application. b. Removing the existing deteriorated reinforcement and supply and placing of new rebars of 10 mm diameter including cutting, bending and straightening and placing in position complete in all levels and if necessary, welding the new bars with the existing Rods by over lapping with all lead and lift etc. complete (If the rebar is corroded more than 35% of its original size) c. Providing and applying Epoxy Zinc Rich Primer and mixing mechanically until it is homogenous and applying the same as one rich coat on reinforcement complete with all lift etc. complete. (If corrosion found on rebars) d. Providing and applying a coat of two-part solvent free epoxy resin-based Bonding Agent on the wall at rate of 2-3 Sqm/kg inside the cracks. e. Providing and applying plastering on the walls using polymer modified plaster with CM 1:4 admixed with SBR Latex or equivalent or equivalent @ 2 kg per bag of cement with suitable quantity of clean water (All chemicals shall be used from Pidilite or equivalent brand)

Construction of Inspection chamber of size 60x60x60cm with necessary earth work excavation, 40mm size brick jelly concretein C.M.1:4:10 ( 1 cement, 4 Crushed Stone Sand (Commercially called M-Sand) and 10 broken brick jelly)stock brick work in c.M.1:y (1 cement and 6 Crushed Stone Sand (Commercially called M-Sand)) for 23cmthick wall, benching, channelling and plastering,interior,exterior and top with c.M.1:3 (1 cement and 3 Crushed Stone Sand (Commercially called M-Sand) Sandsand) 12mm thick and providing 7.5cm thick RCC loose slabcovering in CC 1:2:4 ( 1 Cement,2 Crushed Stone Sand (Commercially called M- Sand) and 4 blue granitebroken stone jelly of 12mm to 20mm size) with necessary reinforcement and arrangements to lift for cleaning purpose,etc.,complete.

Supplying and fixing 55cm x 40cm colour glazed wash basin withl ead and brass connection C.P. pillar tap and other fittings etc. complete.

Paving the flooring with special type of flooring (tiles coloured cement based hydraulic pressed Antiskid tiles) 20mm thick in cm 1:3 including pointing with colour cement etc. complete.(ISI).

supplying of PVC pipes 160mm dia with ISI monogram (working pressure 6kg/cm2)

Wiring with 2 x 1.5 sqmm (22 / 0.3) PVC insulated SC unsheathed Copper conductor cable of 1100V grade in suitable PVC rigid pipe on wall and ceiling with PVC accessories with TW switch box inflush with wall with 5A F.T. switch, covered with hylum sheet of 3mm thick with painting of suitable colour, with continuous earth wire connection of 14 SWG TC wire for open PVC light point / fan point (For electronic Regulator)

Cost of supply of 20w 4 feet LED fitting with LED tube complete set (Patty and LED tube)

Supplying and fixing of 1.5 HP Jet Pump Set including all accessories. ( Kiloskar, Texmo, CRI or equivalent Brand)

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