REPAIRS AND MAINTENANCE OF EXTERNAL B/R NATURE WORKS, PLASTER, PLINTH PROTECTION, ROOF TREATMENT, PLUMBING WORKS, SANITARY FITTINGS AT 2 CBPO UNDER GE(N) KOLKATA

Amount

Taking down cement plaster of any description on brick walls including raking out joints, hacking for key, scrubbing down with water complete all as specified and directed.

Material and labour for 20mm thick plaster in cement mortar (1:4) in two layers, i.e 10mm thick in each layer, top layer mixed with integral water proofing liquid admixture as per manufacturers instruction on brick or concrete surfaces of wall finished the surface fair and even complete all as specified and as directed. Note :- WPC shall be measured and paid separately.

Supply only integral water proofing liquid admixture for concrete and mortar complete all as specified and as directed. (Make :CONPLAST X421IC of Fosroc /SIKA No 1 of SIKA/equivalent brand of PIDILITE)

Material and labour for rendering 15mm thick in cement mortar (1:6) on fair faces of brickwork or concrete surfaces, finished the surface even and smooth without using extra cement complete all as specified and as directed.

Material and labour for rendering 5mm thick in cement mortar (1:3) on concrete surfaces in ceiling and finished the surface even and smooth without using extra cement complete all as specified and as directed.

M&L for applying 1.50mm thick wall care putty and applying two coats of oil bound distemper over a coat of alkali resistant primer to wall to newly plastered surface complete all as specified and as directed.

M&L for complete removal of existing treatment of old plastered surfaces of wall including washing, rubbing down and stopping of old treatment and applying 1.50mm thick wall care putty and applying two coats of oil bound distemper over a coat of alkali resistant primer complete all as specified and as directed.

All as per item No. 7 above but in ceiling complete all as specified and as directed.

Material and labour for preparation of newly plastered surfaces of wall by vaccum based sanding machine, and applying two coats of Anti Fungal paint white or coloured by Auto Roller over a coat of primer, including necessary scaffoldings complete all as specified and directed and as per manufacturers instructions.

Material and labour for preparation of old plastered surfaces of wall, and applying one coat of Anti Fungal paint white or coloured by auto roller complete all as specified and directed.

M&L for preparation of new plastered surfaces of wall and applying two coats of cement base paint over a coat of alkali resistant primer complete all as specified and as directed.

M&L for complete removal of existing treatment on plastered surfaces of wall including washing, rubbing down and stopping of old treatment and applying two coats of cement base paint over a coat of alkali resistant primer complete all as specified and as directed.

M&L for preparation of old plastered surfaces of wall and applying one coat of white wash complete all as specified and as directed.

All as per item No. 13 above but in ceiling complete all as specified and as directed.

Material and labour for preparation of new plastered surfaces of wall and applying three coats of white wash complete all as specified and as directed.

Demolition of cement concrete in ground floors and pavings n.exc. 15 cm thickness below or above ground level complete all as specified and as directed.

M&L for hardcore of gauge exc.63mm but not exc.100mm, deposited, spread and levelled in layers n.exc. 15cm thick, watered/well rammed to a true surface complete all as specified and directed.

Material and labour for 75mm thick PCC type D2 (1:4:8) using 40mm garded stone aggragate as in , sub-base of floors etc complete all as specified and as directed.

M&L for chequered cement concrete tiles 30cm x 30cm x 25mm thick, over 20 mm thick screed bed or bedding layer of mortar in CM (1:6) for laying floor finishes set, jointed with grey cement and pigment and pointed in neat cement slurry in floors complete all as specified and directed.

M&L for sand filling under floors or in foundations including watering and consolidation complete all as specified and directed.

Material and labour for Machine pressed precast conctete interlocking paver block any shape and size confirming to IS 15658-2006 of 60 mm thickness, M-35 grade, with grey cement and pigments and laid over sand cushoning complete all as specified and as direded.

Materials and labour for 75mm thick PCC (1:3:6) type C2 (using 40 mm graded stone aggregate) as in pavement/plinth protection , laid in bays and joints shall be filled up with bituminous gola with 80/25 bitumen ( 1 part of bitumen to be mixed with 3 part of sand and finished the surface fair and even complete all as specified & directed.

Material and labour for 40mm thick PCC (1:2:4) type B1 (using 20mm graded aggregate) as in floors and finished the surface even & smooth without using extra cement complete all as specified and as directed.

Demolition of brickwork built in cement mortar including all quoins, arches, pillars etc. complete all as specified and as directed.

Material and labour for brick work with bricks class designation 75, old size, straight or curved on plan exc 6m mean radius built in cement mortar (1:6) complete all as specified and as directed.

Material and labour for brick work with bricks class designation 75, old size, straight or curved on plan to any radius in half brick thick walls built in cement mortar (1:4) complete all as specified and as directed

Demolition of cement concrete of any description including any treatment there to and in any position provided as in roof padding, roof kerb etc complete all as specified and directed. Note: - (a) Demolition should be done carefully to roof slab. (b) Any damage occurred in the roof surfaces during demolition shall be made good by the contractor without extra cost to the department. (c) Disposal of old debris/retrieved material to outside the premises or as directed.

Material and labour for providing plain cement concrete 1:2:4 type B1 using 20mm graded stone aggregate as in roof padding laid in slope as per requirement mixed with integral water proofing liquid admixture as per manufacturer's instructions complete all as specified and as directed. Note : (i) Minimum thickness of PCC shall be 50mm. (ii) Integral water proofing liquid admixture shall be measured and paid separately.

Material and labour for water proofing treatment with APP based standard membrane over PCC padding in roof with the following courses of treatment :- (a) Apply bituminous primer (IS 3384) @ 0.40 Kg per sqm of the surface area including cleaning the surfaces complete all as specified. (MAKE : Pibial Primer of TEXSA or equivalent product of BITUMAT/ BITUNIL/SIKA/STP) (b) Apply APP plastomeric bitumen based mineral finished water proofing membrane polyester reinforced(4 Kg/Sqm) with 10cm over laps and torch bonded at joints including surface preparation before and after application of treatment as per manufactures instruction complete all as specified. (Make of APP Membrane: Moply FP 4 Kg mineral of TEXA/WP Shield 103 PM of SIKA/STP or Equivalent material of BITUNIL/BITUMAT. (Note :- Cost of cutting groove to parapet wall for inserting APP membrance and filling groove with cement mortar (1:3) is deemed to be included within the quoted rate.)

Dismantling cast iron drain pipes of any dia and any description, jointed in cement mortar obtained either from trenches/wall as required complete all as specified and as directed.(Note : Excavation if required, shall be measured and paid separately)

Supply and fix 100mm bore cast iron (Sand cast pipes) soil, waste and vent pipes in any length with or without ears, with cement joints, fixed to wall with MS clamp complete all as specified and as directed.

Supply and fix 100mm bore cast iron (Sand cast pipes) soil, waste and vent pipes in any length with or without ears, with cement joints, laid in trenches or in floors complete all as specified and as directed.

Supply and fix UPVC (SWR) pipe 110mm bore, type A, single socketed, in any length with rubber ring joints fixed to walls with and including PVC clip and including taking down existing rain water pipes complete all as specified and as directed.

Supply and fix UPVC bend/shoe 110mm dia all as specified and as directed.

Supply and fix 100mm bore cast iron bends (any radius), diminishing pieces or tapers (larger bore measured) complete all as specified and as directed.

S & F Rotational moulded polyethylene water storage tanks (cylinderical vertical with closed top) multilayered, 1000 Ltr Capacity, hoisted and fixed in position including dismantling of old unserviceable existing water tank complete all as specified and directed.

Supply and fix 20mm bore Ball valves high pressure of PTMT with epoxy coated aluminium rod and high density plastic ball screwed for iron pipe complete all as specified and as directed.

Supply and fixing in repair Gun-metal, globe or gate valves size 20 mm dia, with iron wheel head, screwed both ends for iron pipe and fixed complete all as specified and as directed.

Taking up or down 20mm dia steel tubing and connections, segregating serviceable pipe for reuse complete all as specified and as directed.

All as per item No. 39 above but 25mm dia complete all as specified and as directed.

Supply and fix 20mm bore medium grade galvanized steel tubes with all fittings and fixed to wall or in floors etc complete all as specified and as directed.

All as per item No. 41 above but 25mm dia complete all as specified and as directed.

All as per item No. 41 above but fixing only complete all as specified and as directed. Note: Serviceable GI pipe obtained from item No.39 above shall be reused after cleaning.

All as per item No. 42 above but fixing only complete all as specified and as directed. Note: Serviceable GI pipe obtained from item No. 40 above shall be reused after cleaning.

Dismantling wrought iron for mild steel work for any description not otherwise provided for complete all as specified and directed.

Supply and fix steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to IS-1161-1979 grade St-240 complete all as specified and as directed.

Dismantling Asbestos cement / Transluscent ( Corrugated , semicorrugated etc.) sheets as in Roof covering , wall , ridge , hips valleys and flashings etc for the building structures not exceeding 10 m height from the average ground level complete all as specified and as directed.

Supply and fix pre- painted galvalume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and as directed.

Supply and fix in repair bib taps of 15mm bore fancy type, chromium plated cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for brass ferrule complete all as specified and as directed.

Supply and fix in repair angular stop cock of 15mm bore fancy type, chromium plated cast copper alloy, screwed down, high pressure, with crutch handle, screwed both ends for brass ferrule complete all as specified and as directed.

Supply and fix in repair pillar cock of 15mm bore, cast copper alloy with capstan heads fancy type, chromium plated screwed down, high pressure, with long screwed shanks and fly-nuts, screwed for iron pipe and fixed complete all as specified and as directed.

Supply and fix in repair 10 litre capacity PVC valve less, symphonic action type, flushing cistern, low level, white, with inlet, ball valve, float and handle including brackets and flush pipe of polyethylene of low or high density or PVC. 32 mm dia, for low level cistern including PVC connections 15mm size with PTMT nuts and washer both side of length 450mm complete all as specified and as directed.

Supply and fix health faucet (ABS body) with 8mm dia 1 meter long flexible tube and wall hook for fixing in 15 mm dia pipe complete all as specified and as directed.

Supply and fix chromium plated two ways bib cock with wall flange for fixing in 15 mm dia pipe complete all as specified and as directed.

Supply and fix in repair vitreous China squatting pan, ‘Orissa’ pattern, size 580 x 440 mm white, with integral foot rests including 'P'or 'S' trap (excluding flushing cistern and flush pipe) including provision of lime concrete bedding complete all as specified and directed.

Supply and fix in repair Vitreous china EWC 'P' or 'S' Trap of size 400x365x540mm, white including Plastic water closet seat, white closed pattern with flat bottom, and cover and mild steel chromium plated or aluminised hinging device suitable for EWC (excl flushing cistern and flush pipe) complete all as specified and directed.

Supply and fix in repair vitreous China wash basin white flat back, size 630 x 400 mm including PTMT waste coupling 32mm dia (min wt 45 gm), 15mm bore PTMT pillar tap, chain, plug and porcelain stopper etc. complete all as specified and as directed.

Supply and fix in repair Brass chromium plated Tubular Towel Rail , 20mm dia, D type, 600mm long between flange fixed with chromium plated brass screws complete all as specified and as directed.

Supply and fix in repairs PVC connection 15mm size with PTMT nuts of length 600 complete all as specified and directed.

Supply and fix in repair 15mm bore Bib tap (Minimum weight 90gms) standard of PTMT any colour high pressure screwed for iron pipe complete all as specified and as directed.

Supply and fix in repair 15mm dia Stop valve of PTMT any colour high pressure screwed for iron pipe and fixed (Minimum weight 90gms) complete all as specified and as directed.

S & F 75mm Swivel shower of PTMT any colour for fixing with 15mm pipe. (Minimum weight 40gms) including Shower arm 15 mm size, 195mm long with bend of 45degree with flange of PTMT any colour.(Minimum weight 40gms) complete all as specified and directed.

Supply and fix in repair 100mm cast iron Nahani trap, with grating including jointing to waste pipe fixed in cement concrete 1:2:4 type B1 complete all as specified and as directed.

Demolition of reinforced cement concrete of roofs, floors , staircases, landing, chajjas and similar suspended works in ground floors beams (reinforcement cut as required to facilitate demolition) complete all as specified and directed.

M&L for reinforced cement concrete (nominal mix) type A1 (1:1.5:3) (using 20mm graded stone aggregate) as in chajja etc complete all as specified and directed. (Note: Formwork and reinforcement shall be measured and paid separately)

Taking down/dismantling loose/damage concrete including plaster of any description and in any position from RCC structures like chajja, fins, roof ceiling,louvers, parapet, column, beam, and of lintel by hammering with wooden mallets carefully chipping off the old concrete surface with necessary scaffolding upto 24mtr height including cutting of rusted reinforcement if so required and disposal of old debris to outside the premises complete all as specified and as directed.

M&L for cleaning the existing surface of concrete and reinforcements as obtained after execution of item No. 66 here in before by wire brush including scrapping & cleaning with emery paper or by air blasting or sand blasting incl foreign matrials , loose concrete/aggregate etc and washing down with water as required complete all as specified and as directed.

Material and labour for TMT bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending lapping etc as required and welding with existing bar complete all as specified and as directed.

Material and labour for TMT bars 6 to 8mm bar, cut to length, bent to shape required, including cranking, bending, lapping etc as required and welding with existing bar complete all as specified and as directed.

Material and labour for TMT bar upto 10mm dia as in stirrups cut to lenth bent to shape required including cranking ,bending etc and lapping ,welding as directed to the existing one complete all as specified and as directed.

M & L for providing single coat of epoxy bond adhesive of prepared non metallic surface (existing surface) and applying by brush all as per manufactures instruction/specification. The bonding agent shall have minimum compressive strength of 40 N/Sqmm and complete all as specified and directed.

Supply and application of Epoxy Zinc rich primer on the steel surface by brush the primer shall have a minimium specific gravity 1.75 minimum weight film thickness/coat 40 microns and minimum adhesive bond strength with steel is 1.5N/mm2 including cleaning and removing loose concrete from steel surface complete all as specified and directed.

M&L for providing and placing in position free flow non shrink cementitious micro concrete of Grade of M-30 to the effected beam, column etc . The micro concrete shall have a minimium 1 day compressive strength of 10 Mpa and 28 days strength of 30 Mpa, minimum tensile strength 5N/mm2 @ 28 days, minimium flextural strength 5N/mm2 @ 28days complete all as specified and directed.

Supply, mixing and application two component structural grade polymer modified reinstatement mortar, where local spalling has taken place or shuttering is not possible . The mortar can be applied in layers not exceeding 6mm thick in each layer in and upto any thickness in smaller vertical pockets and upto any thickness in horizontal applications. The mortar should have a minimium compressive strength 12N/mm2 in 1 day and 45N/mm2 in 28 days. Minimum flexural strength should be 8 N/mm2 in 28 days. A modified styrene butadience emulsion for use as a bonding aid and gauging liquid for cementious system to be mixed with cement slurry before the application of modified polymer mortar to be used @ 6 ltr/bag of cement. The bonding agent should have minimium compressive strength 24N/mm2. Minimum tensile strength 3.5N/mm2, minimium flexural strength 6.5N/mm2 upto 25 mm average thickness complete all as specified and directed.

M & L for use and waste of formwork to sides of pillars, posts, struts, piers, columns and stanchions for rough finished concrete surfaces complete all as specified and as directed.

M & L for use and waste of formwork to sides of sides and soffits of beams, lintels, floors etc. for rough finished concrete surfaces complete all as specified and as directed.

M & L for use and waste of formwork to parapet, chajja, RCC wardrobe and similar items for rough finished concrete surfaces complete all as specified and as directed.

Material and labour for 5 mm thick plastering in CM (1:3) on concrete surfaces as in sides of column, lintel, beam, chajja, facia, railing, RCC wardrobe etc including finishing the surface even and smooth without using extra cement complete all as specified and as directed.

KAY BEE ASSOCIATES (BID ID -3071143)

MOTHER LUMIER INDUSTRIES (BID ID -3075159)

RBS Builders (BID ID -3071026)

M/S SHEKHAR TRADING CORPORATION (BID ID -3072700)

MASTER BUILDERS (BID ID -3074075)

The Planters Engineering Corporation (BID ID -3074667)

RUNJEN CONSTRUCTION (BID ID -3074752)

M/S KARTICK DUTTA (BID ID -3073655)