Waterproofing work in the Auditorium Building at National Law Institute University

Amount

Waterproofing work

Removal of Old tarfelt i/c including disposal of same on approved municipal dumping ground.

Providing water proofing treatment over Roof, Wall, Chhajjas, Balcony with Rubberized elastomeric cold applied liquid waterproofing membrane blend of special resin and rubber with more than 1300% elongation (confirming ASTM-D2370-98), at leakage/seepage area consisting of the following operation. (i) Removal of damaged waterproofing treatment if any like bituminous membrane / plaster/ brick bat koba/screeding etc. (ii) Surface preparation: Roughening of surface by scrubbing with steel wire/ Nylon brush/ Removing all dust particles and washing with adequate water to clean completely, opening of cracks in 'V' groove in size of 5mm x 10m (WxD), filling of cracks with elastomeric creak filler/PU sealent repair of potholes and holor making on roof surface by polymer mortar with adding SBR bonding agent. (iii) Providing and applying 1st coating of rubberized elastomeric liquid membrane as primer (ratio 1:2 1 part liquid membrane and 2 part water) by brush/ Roller/ Spray having minimum thickness of 70-80 micron. Allow the coating to set in natural air for minimum 2 hrs, then put reinforcement by laying 45gsm fibre glass mesh and applying 2nd coat of rubberized elastomeric liquid membrane (Ratio: 1 part membrane and 20% water) with minimum thickness 100-120 micron. Allow the coating to set in natural air for minimum 12 hrs. (iv) Providing and applying 3rd coat of rubberized elastomeric liquid membrane (Ratio: 1 part membrane and 10% water). Total DFT (Dry film thickness) thickness after 3rd coat must be 280-300 micron and consumption in three coats @ 6.5kg for 10sqm. (v) Providing and applying 4th and 5th coat of High quality waterproof membrane in white colour, single component special synthetic resin based flexible thixotropic white color coating with excellent UV resistance (SRI - 144) with more than 300% elongation (confirming ASTM D 412-98) in ratio: 1 part membrane and 10% water thickness of 200 micron DFT in two coats, with average consumption @ 5kg per 10 sqm. After application of fourth coat let it air dry for minimum 3 hrs before application of fifth coat. (vi) The treated area must be tested for water leakage/seepage by flooding with water for 48 hrs (vi) Application of membrane coating shall be got done by authorized applicator of manufacturer. (vii) 5 years of service guarantee to be provided. All above operations to be done in order as per direction on Engineer-in-Charge.

Providing and applying waterproofing & Heat reflecting roof coating with 100% acrylic elastomeric polymers. Contains 30% Volume solid, tensile strength 8 kg/cm², crack bridging, VOC 30 ± 5 gm/ltr upto 2 mm. then applying two coats with forced coverage of 20 sqft/ltr/two coats. The operation shall be carried out after scrapping & propely clening the surface to remove loose particles with wire brush/Jet washer. Apply 1 coat @1 ltr/10 sqm & 3 undiluted coats @ 8 ltr/10 sqm with 4 hrs interval of each coat.The work shall be carried out as recommended by the manufacturer’s specification & the direction of the Engineer- in-Charge.

Providing and fixing false ceiling at all height including providing and fixing of frame work made of special sections, power pressed from M.S. sheets and galvanized with zinc coating of 120 gms/sqm (both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6 mm thick with flanges of 27 mm and 37mm, at 1200 mm centre to centre, one flange fixed to the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9 mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at 450 mm centre to centre, shall be fixed in a direction perpendicular to G.I. intermediate channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5 x 25 mm at 230 mm c/c, including jointing and finishing to a flush finish of tapered and square edges of the board with recommended jointing compound , jointing tapes, finishing with jointing compound in 3 layers covering upto 150 mm on both sides of joint and two coats of primer suitable for board, all as per manufacturer's specification and also including the cost of making openings for light fittings, grills, diffusers, cutouts made with frame of perimeter channels suitably fixed, all complete as per drawings, specification and direction of the Engineer in Charge but excluding the cost of painting with : 12.5 mm thick tapered edge gypsum board 12.5mm thick moisture resistant gypsum plasterboards Moistbloc as per BS EN 520 confirming to water absorption class H1 with total water absorption < 5%, Green Pro certified by CII

Providing and fixing false ceiling at all height including providing and fixing of frame work made of special sections, power pressed from M.S. sheets and galvanized with zinc coating of 120 gms/sqm (both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6 mm thick with flanges of 27 mm and 37mm, at 1200 mm centre to centre, one flange fixed to the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9 mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at 450 mm centre to centre, shall be fixed in a direction perpendicular to G.I. intermediate channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5 x 25 mm at 230 mm c/c, including jointing and finishing to a flush finish of tapered and square edges of the board with recommended jointing compound , jointing tapes, finishing with jointing compound in 3 layers covering upto 150 mm on both sides of joint and two coats of primer suitable for board, all as per manufacturer's specification and also including the cost of making openings for light fittings, grills, diffusers, cutouts made with frame of perimeter channels suitably fixed, all complete as per drawings, specification and direction of the Engineer in Charge but excluding the cost of painting with : 10mm thick plaster of Paris Sunk or raised mouldings

Finishing walls with Acrylic Smooth exterior paint of required shade : Old work (Two or more coat applied @ 1.67 ltr/ 10 sqm) on existing cement paint surface).

Providing and applying white cement based putty of average thickness 1 mm, of approved brand over the plastered wall surface to prepare the surface even and smooth i/c all cost of material, labour and scaffold etc in all position complete.

S N ASSOCIATES (BID ID -1308733)

SADGURU ENTERPRISES (BID ID -1306468)