Urgent Civil Repair and Maintenance Work at RHQ POWERGRID Kolkata

Repairing of external building structure and repainting

Scaffolding Work: Providing and fixing scaffolding system on the exterior side upto required level with taking all the necessary safety measures. Scaffolding will make with bamboo (upto 10th floor)

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Repair to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.m and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing morter, including disposal of rubbish, all cpmplete as per the direction of Engineer in charge.

Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/ masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-inCharge. (The payment shall be made on the basis of actual weight of approved grout injected.)

Cleaning reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24hrs of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of EIC.

15 mm cement plaster of mix. 1:4 (Cement 1 : Coarse Sand 4)

Extra for plastering exterior walls of height more than 10m from ground level for additional height of 3m or part thereof.

Removing white or colour wash,synthetic enamel,epoxy, acrylic,glass panes etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Providing and applying white cement based putty of average thickness 1mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade Old work (Two or more coats applied @ 1.43 ltr/ 10 sqm) over existing cement paint surface. (Minimum 5 years warrenty required)

Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade: New work (Two or more coats applied @ 1.43 ltr/10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/10 sqm) (Minimum 5 years warrenty required)

Distempering with 1st quality acrylic distemper (ready mixed) having VOC (Volatile Organic Compound ) content less than 50 gram/ litre, of approved brand and manufacturer including applying additionalcoats wherever required to achieve even shade and colour 13.81.1 Old work (one or more coats)

Providing and applying integral crystalline (dry shake) of hydrophilic in nature for waterproofing treatment to the RCC structures like basement raft, foundation slab, sewage & water treatment plant slab, warehouses floor, parking structures and water tank base slab etc. sprinkled @0.60 kg per sqm or higher as recommended by the manufacturer’s specification over the lean concrete of above cited structures. The material shall meet the requirements as specified in ACI-212-3R-2010 i.e. by reducing permeability of concrete by more than 85%, compared control concrete as per DIN 1048 and resistant to 16 bar hydrostatic pressure on negative side. The crystalline dry-shake shall be capable of self-healing of cracks up to a width of 0.50 mm. The work shall be carried out all complete as per specification and the direction of the Engineer-in-charge. The product performance shall carry guarantee for 10 years against any leakage.

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete On steel work

Providing and fixing 18 mm thick gang saw cut, mirror polished, premoulded and prepolished, machine cut for kitchen platforms, vanity counters, window sills, facias and similar locations of required size, approved shade, colour and texture laid over 20 mm thick base cement mortar 1:4 (1 cement : 4 coarse sand), joints treated with white cement, mixed with matching pigment, epoxy touch ups, including rubbing, curing, moulding and polishing of edges to give high gloss finish etc. complete at all levels. Raj Nagar Plain white marble/ Udaipur green marble/ Zebra black marble.Area of slab over 0.50 sqm

Seepage in canteen wall

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix).

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Repair to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.m and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing morter, including disposal of rubbish, all cpmplete as per the direction of Engineer in charge.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :1:11/2:3 (1 Cement : 11/2 Coarse Sand (zone-iii) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. Thermo-mechanically treated bars of grade FE-500D or more.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approval steel primer all complete.

Water logging and seepage in basement rooms,leakage at basement entry wall junction,ground floor false celling and reception area rennovation

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Providing & Applying polymer modified, flexible cementatious negative side waterproofing coating with elastic waterproofing polymers on interior wall plaster surface in three coats @14.35 kg /10 sqm. one coat of self priming of cementatious waterproofing polymer(dilution with water in the ratio of 1:1) and two coats of cementatious waterproofing polymer (dilution with water in the ratio of 3:1 ) after scrapping and properly cleaning the surface to remove pre-existing paint film & loose particles till plaster is visible, complete in all respect as per the direction of Engineer-in-Charge.

12 mm cement plaster of mix :1:4 (1 cement: 4 coarse sand)

Providing and laying vitrified floor tiles(matt finish) in different sizes (thickness to be specified by the manufacturer) with water absorption less than 0.08% and conforming to IS: 15622, of approved make, in all colours and shades, laid on 20mm thick cement mortar 1:4 (1 cement : 4 coarse sand), jointing with grey cement slurry @ 3.3 kg/ sqm including grouting the joints with white cement and matching pigments etc., complete.Size of Tile 600x600 mm

Providing and fixing Ist quality ceramic glazed wall tiles conforming to IS: 15622 (thickness to be specified by the manufacturer), of approved make, in all colours, shades except burgundy, bottle green, black of any size as approved by Engineer-in-Charge, in skirting, risers of steps and dados, over 12 mm thick bed of cement mortar 1:3 (1 cement : 3 coarse sand) and jointing with grey cement slurry @ 3.3kg per sqm, including pointing in white cement mixed with pigment of matching shade complete.

Distempering with 1st quality acrylic distemper (ready mixed) having VOC content less than 50 gram/litre, of approved manufacturer and of required shade and colour all complete to achieve even shade and colour : New work (two or more coats) over and including water thinnable priming coat with cement primer having VOC content less than 50gram/litre.

Providing and applying plaster of paris putty of 2 mm thickness over plastered surface to prepare the surface even and smooth complete.

Providing and fixing precoated galvanised iron profile sheets (size ,shape and pitch of corrugation as approved by Engineer-in-charge) of total coated thickness 0.50mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per IS : 277 ,in 240 mpa steel grade ,5-7 microns .sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 meter or as desired by Engineer-in-charge .The sheet shall be fixed using self drilling /self tapping screws of size (5.5x55mm) with EPDM seal , complete upto any pitch in horizontal /vertical or curved surfaces , excluding the cost of purlins ,rafters and trusses and including cutting to size and shape wherever required.

Providing and fixing precoated galvanised steel sheet roofing accessories of total coated thickness o.50mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05mm) with zinc coating 120 gram per sqm as per IS : 277,in 240 mpa steel grade 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling /self tapping screws complete: Ridges plain (500-600mm)

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approval steel primer all complete.

Removing white or colour wash,synthetic enamel,epoxy, acrylic etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Providing and applying white cement based putty of average thickness 1mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : One or more coats on old work

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix).

Chequered terrazo tiles 22 mm thick with graded marble chips of size up to 6 mm in floors, jointed with neat cement slurry mixed with pigment to match the shade of the tiles, including rubbing and polishing complete, on 20 mm thick bed of cement mortar 1:4 (1 cement :4 coarse sand) :Dark shade pigment using ordinary cement

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete.On concrete work

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete On steel work

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level in all shapes and sizes in : 6.4.1 Cement mortar 1:4 (1 cement : 4 coarse sand)

Extra for brick work / AAC block masonry / Tile brick masonry in superstructure above floor V level, for each four floors or part thereof by mechanical means.

Dismantling aluminium/ Gypsum partitions, doors, windows, fixed glazing and false ceiling including disposal of unserviceable material and stacking of serviceable material with in 50 meters lead as directed by Engineerin- charge.

Providing and fixing false ceiling at all heights with integral densified calcium silicate reinforced with fibre and natural filler false ceiling tiles of Size 595x595 mm of approved texture, design and patterns as per CPWD Specification 2019, to be laid in true horizontal level suspended on interlocking metal T-Grid of hot dipped galvanised iron section of 0.33 mm thick (galvanized @ 120 grams per sqm including both sides)comprising of main-T runners of size 24x38 mm of length 3000 mm,cross - T of size 24x32 mm of length 1200 mm and secondaryintermediate cross-T of size 24x32 mm of length 600 mm to formgrid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e. 12x50 mm long dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and L-shape level adjuster of size 76x25x25x1.6 mm fixed with grid and Z cleat of size 25x37x25x1.6 mm thick with precut hole on both 25 mm flange to pierce into 12x50 mm or even bigger size dash fastener if require, fixed with Glavanised iron perimeter wall angle or size 24x24x0.40 mm of length 3000 mm to be fixed on periphey wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall S.S screws. The work shall be carried out as per specifications, drawing and as per directionsof the Engineer-in-Charge.

Proving and fixing of 12.5 mm thick tapered edge gypsum plain board conforming to IS: 2095- (Part I) :2011 (Board with BIS certification marks)

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 3592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. 110 mm diameter

Filling the gap in between aluminium frame & adjacent RCC/ Brick/ Stone work by providing weather silicon sealant over backer rod of approved quality as per architectural drawings and direction of Engineer-in-charge complete. 21.8.1 Upto 5mm depth and 5 mm width

External road painting

Removing white or colour wash,synthetic enamel,epoxy, acrylic etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete.On concrete work

Damaged boundary wall

Removing white or colour wash,synthetic enamel,epoxy, acrylic,glass panes etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade Old work (Two or more coats applied @ 1.43 ltr/ 10 sqm) over existing cement paint surface. (Minimum 5 years warrenty required)

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete. On steel work

Repair to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.m and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing morter, including disposal of rubbish, all cpmplete as per the direction of Engineer in charge.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

DSR CODE

Repairing of external building structure and repainting

Scaffolding Work: Providing and fixing scaffolding system on the exterior side upto required level with taking all the necessary safety measures. Scaffolding will make with bamboo.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Repair to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.m and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing morter, including disposal of rubbish, all cpmplete as per the direction of Engineer in charge.

Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/ masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-inCharge. (The payment shall be made on the basis of actual weight of approved grout injected.)

Cleaning reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24hrs of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of EIC.

15 mm cement plaster of mix. 1:4 (Cement 1 : Coarse Sand 4)

Extra for plastering exterior walls of height more than 10m from ground level for additional height of 3m or part thereof.

Removing white or colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Providing and applying white cement based putty of average thickness 1mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

EXTERNAL PAINTING- - New work

Distempering with 1st quality acrylic distemper ( 13.81.1 Old work (one or more coats)

Providing and applying integral crystalline (dry shake) of hydrophilic in nature for waterproofing treatment to the RCC structures like basement raft, foundation slab, sewage & water treatment plant slab, warehouses floor, parking structures and water tank base slab etc.

Seepage in canteen wall

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Thermo-mechanically treated bars of grade FE-500D or more.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approval steel primer all complete.

Water logging and seepage in basement rooms,leakage at basement entry wall junction,ground floor false celling and reception area rennovation

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster i

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials

Providing & Applying polymer modified, flexible cementatious negative side waterproofing coating with elastic waterproofing polymers on interior wall plaster surface in three coats …

12 mm cement plaster of mix :1:4 (1 cement: 4 coarse sand)

Providing and laying vitrified floor tiles

Providing and fixing Ist quality ceramic glazed wall tiles

Distempering with 1st quality acrylic distemper (ready mixed) having VOC

Providing and applying plaster of paris putty of 2 mm thickness over plastered surface to prepare the surface even and smooth complete.

Providing and fixing precoated galvanised iron profile sheets

Providing and fixing precoated galvanised steel sheet roofing Ridges plain (500-600mm)

Structural steel work riveted, bolted or welded

Painting with synthetic enamel paint of approved brand and manufactureof required colour to give an even shade :One or more coats on old work

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix).

Finishing with Epoxy paint (two or more coats) CONCRETE WOK

Finishing with Epoxy paint (two or more coats) STEEL WOK

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level in all shapes and sizes in : 6.4.1 Cement mortar 1:4 (1 cement : 4 coarse sand)

Extra for brick work / AAC block masonry / Tile brick masonry in superstructure above floor V level, for each four floors or part thereof by mechanical means.

Dismantling aluminium/ Gypsum partitions, doors, windows, fixed glazing

Providing and fixing false ceiling at all heights with integral densified calcium sil

Proving and fixing of 12.5 mm thick tapered edge gypsum plain board conforming to IS:

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 3592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. 110 mm diameter

Filling the gap in between aluminium frame & adjacent RCC/ Brick/ Stone work by providing

External road painting

Removing white or colour wash,synthetic enamel,epoxy, acralic etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc. complete.On concrete work

Damaged boundary wall

Removing white or colour wash,synthetic enamel,epoxy, acralic etc. by scrapping and sand papering and preparing the surface smooth including necessary repairs to scraches etc. complete.

Finishing with Epoxy paint (two or more coats) at all locations prepared....On concrete work

Repair to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.m and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polyme

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.