Repair and maintenance Works to the Telephone Exchange Building, Swaraj Dweep, AN Islands-2nd Call

Amount

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor, etc., up to floor five level, excluding the cost of centering, shuttering and finishing : (a) 1:2:4 (1 cement : 2 coarse sand(zone-III) : 4 graded stone aggregate 20 mm nominal size).

Providing wood work in frames of doors, windows, clerestory windows and other frames, wrought framed and fixed in position with hold fast lugs or with dash fasteners of required dia & length ( hold fast lugs or dash fastener shall be paid for separately). (a) Sal wood

Providing and fixing panelling or panelling and glazing in panelled or panelled and glazed shutters for doors, windows and clerestory windows (Area of opening for panel inserts excluding portion inside grooves or rebates to be measured). Panelling for panelled or panelled and glazed shutters 25 mm to 40 mm thick : (a) Float glass panes (i) 4 mm thick glass pane

Providing 40x5 mm flat iron hold fast 40 cm long including fixing to frame with 10 mm diameter bolts, nuts and wooden plugs and embedding in cement concrete block 30x10x15cm 1:3:6 mix (1 cement : 3 coarse sand : 6 graded stone aggregate 20mm nominal size).

Providing and fixing ISI marked oxidised M.S. pressed butt hinges with necessary screws etc. complete. (a) 100x58x1.90 mm

Providing and fixing aluminium extruded section body tubular type universal hydraulic door closer (having brand logo with ISi, IS : 3564, embossed on the body, door weight upto 36 kg to 80 kg and door width from 701 mm to 1000 mm), with double speed adjustment with necessary accessories and screws etc. complete.

Providing and fixing aluminium tower bolts ISI marked anodised (anodic coating not less than grade AC 10 as per IS : 1868 ) transparent or dyed to required colour or shade with necessary screws etc. complete :

Providing and fixing aluminium handles ISI marked, anodised (anodic coating not less than grade AC 10 as per IS : 1868) transparent or dyed to required colour or shade with necessary screws etc. complete :

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

Distempering with 1st quality acrylic distemper (ready mixed) of approved manufacturer, of required shade and colour complete, as per manufacturer's specification. (a) Two or more coats on new work.

Applying one coat of water thinnable cement primer of approved brand and manufacture on wall surface : (a) Water thinnable cement primer.

Finishing walls with Premium Acrylic Smooth exterior paint of required shade :

(a) New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm).

(b) Old work (Two or more coats applied @ 1.43ltr/10 sqm over existing cement paint surface)

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : (a) Two or more coats on new work.

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade: (a) Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture.

Removing dry or oil bound distemper, water proofing cement paint and the like by scrapping, sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete.

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq. meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground , all complete as per directions of Engineer-In-Charge. (a) With cement mortar 1:4 (1 cement : 4 fine sand).

Special Structural repair works of disintegrated/ damaged RCC members such as Columns, Chajjas, Lintels, Beams, Slabs, fins etc as per the following process :

a) Relieving structural members like columns , beams , slab of their superimposed loads partially or fully based on the existing site condition and as directed by Engineer-in-charge , by providing adequate adjustable steel props , frames, etc.. and including providing adequate timber runners, planks, bracings, jacking arrangement and tubular steel scaffolding etc.. upto any height as per the site requirement and removal of same after the completion of restoration work of the structural member concerned. b) Removal of all loose and disintegrated cement plaster , concrete from the structure by gentle tapping of the surface, upto the required depth till sound concrete is available including exposing the corroded reinforcing bars. Removal of the concrete in affected part, shall be such that it is removed 2-3 mm beyond the damaged bars, to enable to apply corrosion resistant coating.

c) The reinforcement shall be cleaned thoroughly with wire brush to remove the rust,dirt etc. and applying two coats of corrosion protection treatment for the existing steel reinforcement with Cerazinc ZR or equivalent as per the manufacturer's specification and placing adequate new reinforcement in position wherever required, as directed by the Engineer - in -Charge. (The rate of new reinforcement shall be paid separately under item no. 4 a). (d ) A bonding coat of cement slurry mixed with polymer based bonding additive of Ceralatex SBR or equivalent of mix 4 Kg cement + 0.5 kg polymer based bonding additive / Sqm area , shall be applied over the cleaned and dried old concrete surface. Operation under (e) below should be executed before setting time of this operation.

(e ) Building up of concrete section with polymer modified concrete of requisite thickness with a ratio 1:1:2 (1 cement: 1 river sand: 2 stone aggregate of nominal size 6mm to 12mm) mixed with polymer based bonding additive Ceralatex SBR or equivalent at 5 kg per bag of cement , including necessary operation of casting by dashing or hand packing or by shuttering to the requisite shape and size to achieve compact concrete section of the shape and size of RCC members. f) Smooth finishing of the above surface with Cement mortar 1:3(1 cement:,3 fine sand) mixed with polymer based bonding additive ceralatex SBR or equivalent at, 2 kg/bag of cement.) The rates includes all operations,materials and labour but excluding reinforcement. (All additives/ Admixtures/ coatings are to be utilised as stipulated in item or as per Manufacturers specifications) (i) upto 25mm thick

Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer 3 mm thick water proofing membrane, black finished reinforced with non-woven polyester matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufacture of density at 25°C, 0.87-0.89 kg/ litre and viscocity 70-160 cps. Over the primer coat the layer of membrane shall be laid using Butane Torch and sealing all joints etc, and preparing the surface complete.

The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 650/ 450N/ 5cm. Tear strength in longitudinal and transverse direction as 300/250N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacturer of membrane : (a) 3 mm thick

Dismantling doors, windows and clerestory windows (steel or wood) shutter including chowkhats, architrave, holdfasts etc. complete and stacking within 50 metres lead : (a) Of area 3 sq. metres and below

Dismantling tile work in floors and roofs laid in cement mortar including stacking material within 50 metres lead. (a) For thickness of tiles 10 mm to 25 mm

Providing and fixing wash basin with C.I. brackets, 15 mm C.P. brass pillar taps, 32 mm C.P. brass waste of standard pattern, including painting of fittings and brackets, cutting and making good the walls wherever require: (a) White Vitreous China Wash basin size 550x400 mm with a pair of 15 mm C.P. brass pillar taps

Providing and fixing white vitreous china pedestal type water closet (European type W.C. pan) with seat and lid, 10 litre low level white P.V.C. flushing cistern, including flush pipe, with manually controlled device (handle lever), conforming to IS : 7231, with all fittings andfixtures complete, including cutting and making good the walls and floors wherever required : (a) W.C. pan with ISI marked white solid plastic seat and lid

Providing and fixing white vitreous china flat back or wall corner type lipped front urinal basin of 430x260x350 mm or 340x410x265 mm sizes respectively.

Providing and fixing P.V.C. waste pipe for sink or wash basin including P.V.C. waste fittings complete. (a) Flexible pipe (i) 32 mm dia

Providing and fixing mirror of superior glass (of approved quality) and of required shape and size with plastic moulded frame of approved make and shade with 6 mm thick hard board backing : (a) Rectangular shape 453x357 mm

Providing and fixing PTMT towel rail complete with brackets fixed to wooden cleats with CP brass screws with concealed fittings arrangement of approved quality and colour. (a) 600 mm long towel rail with total length of 645 mm, width 78 mm and effective height of 88 mm, weighing not less than 190 gms.

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step CPVC solvent cement and testing of joints complete as per direction of Engineer in Charge. : Internal work - Exposed on wall.

20 mm nominal outer dia. Pipes.

25 mm nominal outer dia .Pipes.

Providing and fixing unplasticised PVC connection pipe with brass unions : (a) 45 cm length (i) 15 mm nominal bore

Providing and fixing PTMT bib cock of approved quality and colour. (a) 15mm nominal bore, 86 mm long. Weighing not less than 88 gms.

Providing and fixing PTMT angle stop cock 15 mm nominal bore. Weighing not less than 85 gms.

Removing the damaged urinal basin etc., complete as directed by the Engineer-in-Charge.

Cleaning of open Terrace including removal unwanted materials and algae growth, etc, complete as directed by the Engineer-in-Charge.

Cutting of branches of tree with necessary scaffolding arrangements, safety precautions, etc., complete as directed by the Engineer-in-Charge.

Repairing of door/window shutters including removing the shutters, chiselling, planing the shutters & refixing the same in proper alignment, etc., complete as directed by the Engineer-in-Charge.

Providing and fixing approved quality 25 mm thick PVC door shutter with frame of brand syntex or equvalent including all fixtures fittings etc complete as per the direction of the Engineer in Charge.