MAINTENANCE AND REPAIR TO SECURITY INFRASTRUCTURE BOUNDARY WALL, SECURITY FENCE, GATES AT SCATTERED OUTER POCKETS OF JAFFARPORE, LOS DUM DUM AND KANCHRAPARA UNDER GE (AF) BARRACKPORE

Amount

Demolition of brick work or stone boulder masonry, built in cement mortar including all quoins, arches, pillars etc. including removing of unserviciable material from site complete all as specified and directed.

Demolition of cement concrete (unreinforced) in ground floors and paving n.exc. 15cm thick (below or above ground level) and removal of rubbish from the site complete all as specified and directed.

Material and labour for brick work with flyash bricks, old size, straight or curved on plan exc 6m mean radius built in cement mortar (1:4) complete all as specified and directed.

All as per item No 3.00 but except brick and ditto-. Note: - Serviceable brick obtained from item No-1.00 shall be used under this item.

Material and labour for PCC (1:4:8) type D2 (using 40 mm graded stone aggregate ) as in foundation, filling and mass concrete complete all as specified and directed.

Demolition of cement concrete (reinforced) of any description and in any position not otherwise specifically provided including reinforcement cut as required to facilitate demolition and removing debries from site of work complete all as directed.

Material and labour for RCC (1:2:4) (nominal mix) type B-1 (using 20mm graded stone aggregate) as in foundations, including rafts, footings, foundation beams, plinth beams; bases for columns, etc.; basement slabs, under-reamed piles and mass concrete complete all as specified and directed.

Material and labour for RCC (1:2:4) (nominal mix) type B-1 (using 20mm graded stone aggregate) as in columns, pillars, piers, posts and struts 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.

All as per item No 9.00 above but 5mm dia and over upto and including 10mm dia for stirrups, spacer, binders and -ditto-.

Use and waste of form work to sides of concrete foundations, footings, bases of columns, raft and raft beams, sides and soffits (if any) of foundation and plinth beams; and similar work; vertical or to batter with rough finished flat surfaces of concrete complete all as specified and directed.

Use and waste of form work to sides of pillars, posts, struts, piers, columns and stanchions with rough finished square, rectangular or polygonal surface of concrete complete all as specified and directed.

Material and labour for providing precast cement concrete (1:2:4), type B1, (using 20mm graded stone aggregate) in window or door cills, lintels, bressumers, steps, quoin blocks (for use with masonry), string courses, copings, kneelers, apex stones, pier caps, columns, posts, boundary pillars, bed plates, pintle blocks, anchorage blocks, bonders (for stone walling), corbels, brackets, etc. (of any section indicated), with plain fair faces, including chamfers, weatherings, throating etc. and setting in mortar (1:4) complete with joints to match complete all as specified and directed.

Material and labour for PCC (1:2:4), type B1, (using 20mm graded stone aggregate), as in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, coping, bed block for embedding hold fasts, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, water troughs and the like including weathering, slightly rounded or chamfered angles and throating including necessary formwork complete all as specified and directed

Material and labour for precast cement concrete (1:2:4) type B0 (12.5 mm graded agregate) as in louvres and jallies, 25mm thick (measured solid), including all mouldings set jointed and pointed in cement mortar (1:4) including necessary formwork complete all as specified and 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.

Material and labour for 15mm thick rendering in cement mortar (1:4) on fair faces of brick work or concrete surfaces and finish the surfaces even and smooth without using extra cement as in wall complete all as specified and directed.

Materials and labour for preparation of new plastered surfaces of walls and applying two coats of cement base paint over a coat of alkali resistance primer complete all as specified and directed.

Materials and labour for complete removal of existing treatement of walls surface and applying two coats of cement base paint over a coat of alkali resistance primer including preperation of surface complete all as specified and directed.

Dismantling wood posts or struts embedded in concrete, brick work masonry etc. any section, including taking out embedded portion and making good disturbed ground including removing of debris from site complete all as specified and directed.

Dismantling of barbed wire fencing/ concertina coil including removing of debris from site complete all as specified and directed.

Excavation in post holes (or similar holes) each n.exc 0.5 cum, getting out, returning, filling in and ramming earth or broken rubble mixed with earth around in layers not exceeding 25 cm, watering and removing surplus soil to a distance n.exc 50m and making good disturbed surface in soft/loose soil complete all as specified and directed.

Supply and fix mild steel works as in posts and struts in fencing including cutting tops to shape as directed, drilling holes, notching for wire, etc.; flat iron fillets (for securing wire mesh etc.) including all necessary drilling, bolting or riveting, etc., and similar work conforming to Fe-290 Gde E-165 complete all as specified and directed.

Material and labour for PCC (1:3:6) type C2 (using 40 mm graded stone aggregate ) as in foundation, filling and mass concrete 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 zinc chrome primer complete all as specified and directed.

Dismantling of fencing wire mesh of chain link or any type including removing of debris from site complete all as specified and directed.

Supply only chain link MS galvanisd fencing of any size complete all as specified and directed. Note:- Weight of chain link fence shall be ascertained through BOO as directed by GE.

Fixing only chain link fencing including line wire, any mesh, any mesh, size and type to any type of standards, rails, straining bolts, etc. including provission of binding wires complete all as specified and directed.

Material and labour for mild steel round bars 10 mm dia as in tie bar of chain link fencing conforming to Fe-410-W (Gde-E-250) quality-A 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 zinc chrome primer complete all as specified and directed.

Supply and fix mild steel screw bolts diameter of neck 11 to 15mm (machine made) with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, n exc 5cm long complete all as specified and directed.

Supply and fix galvanised 2 strand, steel barbed wire 2.24mm dia. barbed with 2mm dia. barbs at 75mm spacings and straining and fixing to any type of standard rails straining bolts, including, securing or tying at crossings with and provision of galvanised mild steel wire, staples or steel pins, etc. complete all as specified and directed. NOTE: Each line wire to be measured for payment.

Supply and fix concertina coil (CONSEC ZAL Super Razor punched barb tape (SRPBT)) aluminum base helix coil with and including necessary G.I fixing clips for securing complete all as specified and directed with following specification:- (i) Dia of coil (unstretched) - 610 mm (ii) No of Spirals - 6 spirals per per RM (iii) Weight of each coil with hessian pack - 8.00 Kg(±0.5). (iv) Central core wire :- Made from 2.60 mm dia G.I – High Tensile Wire as per IS-4454 galvanised as per IS-2629 . (v) Razor Punched Strip:- Razor punched tape is CONSEC-ZAL steel comprising of Aluminium base with zinc alloy @ 150 gm/ m2 conforming to ASTM A-792/A-792M with additional primer treatment of Epoxy/ Polyurethane & Final Paint Top coat of Caulifield green shade (BSL 139) by Hot Dipping process. Note:- Running length of the wall shall be measured for payment purpose.

Dismantling structural steel work including doors, gates but excluding framed truss etc complete all as specified and directed.

Supply and fix structural steel framed work as in doors or gates of angle or other section with gusset plates, rails, braces, etc., complete, drilled for fixing of steel sheeting or other covering, doors, etc. to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fittings and hanging, also fastening and fixing conforming to Fe-290 (Gde E-165 quality-A complete all as specified and directed.

SARKAR AND COM (BID ID -3143581)

BHATTACHERJEE CONSTRUCTION (BID ID -3143422)

KAMAL ENGINEERING (BID ID -3144170)

NC BOSE AND CO (BID ID -3144094)

ROY CONSTRUCTION (BID ID -3144383)

SUDHA ENTERPRISES (BID ID -3143966)