SPECIAL REPAIR TO SETTING UP OF CENTRE FOR MM WAVE SEMI CONDUCTOR DEVICE SOURCES AND SYSTEMS (CMSDS) AT BARUIPUR KOLKATA

Amount

SUBHEAD - I :TREATMENT OF RISING DAMPNESS AT CLEAN ROOM :

Remove old cement or lime plaster from walls including racking out-mortar joints, cleaning the surface and throwing away the debris at designated place from external surface.

Drilling 8 mm dia holes upto half the thickness of the masonary walls in inclined direction by hammer drill at 150 mm to 250 mm intervals as per requirement at least in 3 to 5 consecutive layers at DPC level followed by cleaning holes by blowing air through mechanical process and inserting 4 mm dia plastic tube in the drilled holes fixed with quick fixing mortar, bending tube and tying with cord and finally grouting into masonry walls silicon based waterproofing compound in brick joint as manufacturer's specification by using disposable injection syringe till refusal and there after removal of plastic tube, sealing holes with polymer modified mortar. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Applying 1 coat of modified cementitious polymer coating cement slurry enriched with Nitobond SBR Latex. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Apply 12 mm thick cement plaster proportion 1:4 with integral waterproofing admixture Conplast WL @ 125 ml/bag of cement followed by neat cement over the plastered surface. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Designing, fabricating, testing, installing and fixing in position Aluminium Composite Panel Cladding, with open grooves for linear as well as curvilinear portions of the building , for all heights and all levels etc. including: (a) Structural analysis & design and preparation of shop drawings for pressure equalisation or rain screen principle as required, proper drainage of water to make it watertight including checking of all the structural and functional design. (b) Providing, fabricating and supplying and fixing panels of aluminium composite panel cladding in pan shape in metalic colour of approved shades made out of 4mm thick aluminium composite panel material consisting of 3mm thick FR grade mineral core sandwiched between two Aluminium sheets (each 0.5mm thick). The aluminium composite panel cladding sheet shall be coil coated, with Kynar 500 based PVDF / Lumiflon based fluoropolymer resin coating of approved colour and shade on face # 1 and polymer (Service) coating on face # 2 as specified using stainless steel screws, nuts, bolts, washers, cleats, weather silicone sealant, backer rods etc. (c) The fastening brackets of Aluminium alloy 6005 T5 / MS with Hot Dip Galvanised with serrations and serrated washers to arrest the wind load movement, fasteners, SS 316 Pins and anchor bolts of approved make in SS 316, Nylon separators to prevent bi metallic contacts all complete required to perform as per specification and drawing The item includes cost of all material & labour component, the cost of all mock ups at site, cost of all samples of the individual components for testing in an approved laboratory, field tests on the assembled working curtain wall with aluminium composite panel cladding, cleaning and protection of the curtain wall with aluminium composite panel cladding till the handing over of the building for occupation. Base frame work for ACP cladding is payable under the relevant aluminium items. The Contractor shall provide curtain wall with aluminium composite panel cladding, having all the performance characteristics all complete ,as per the Architectural drawings, as per item description as specified as per the approved shop drawings and as directed by the Engineer-in-Charge. However, for the purpose of payment, only the actual area on the external face with Aluminum Composite Panel Cladding (including width of groove) shall be measured in sqm. up to two decimal places.

SUB HEAD - II : TREATMENT OF SURFACE UNDULATION AHU UNIT FLOOR:

Sawing or cutting ack the extreities of the repair locations to a dapth of at least 20mm to avoid feather dedging and to provide a square edge. Breaking out the complete to a minimum depth 20mm upto the sawn edge. Clean the surface remove dust etc

Providing and applying rapid setting high strength repair mortor Renderoc RS XTRA for levelling the surface (av thickness 20mm) Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

SUB HEAD - III : SLOPE CORRECTION IN ROOF:

Removing the existing APP in an approx. area of 15 mX15 m and 12mX 12m (Where water stagnant observed) and pouring of free flow micro concrete upto thickness of 40 mm to correct the slope etc. all as directed by Engineer-in-Charge

Providing & Applying APP over the level concrete surface, as existed at site or as directed by Engineer-in-Charge.

SUB HEAD - IV : SOIL GROUTING OUT SIDE BUILDING:

Barricading the Building through drilling of holes & inserting of solid MS pipe maintaining required C/C distance 3 Mtr upto a depth of 5 mtr etc. all as specified and directed by Engineer-in-Charge.

Soil grouting of cement slurry using pneumatic operated grouting pump. Soil grouting with cement and fine silica preferably white sand admixed with non shrink grout Cebex 100 as per manufacturer specification or equivalent by weight of cement at a pressure approx 1.5 to 4 kg per cm2. Cement and Silver sand shall be initially mixed at ratio of 1:2 subsequently as the porosity reduces and injection problem occurs the ratio will be reduced and then grouting will be continued till refusal of pure cement takes place and as directed by Engineer-in-Charge. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

SUB HEAD - V : TREATMENT OF WALLS, CHAJJAS & PARAPET WALLS :

Providing, erecting full steel scaffolding as required, fixing jute kantaans / agro net,MS platforms on the scaffolding, Maintaining scaffolding for period of work, dismantling & taking away.(Measurement of peripheral length of Scaffolding, measured along centre of H frames x height of scaffolding)

Chiselling of damaged plaster of walls, chajja soffits(for patch work), chajja tops(patch work),parapet wall etc. exposing deteriorated concrete lowering, stacking and carting away the debris as and when enough lorry loads are accumulated.

Exposing corroded reinforcement/brick work R.C.C., cleaning the corroded bars thoroughly, removing rust scales with Reebaklen RR , applying zinc-rich anti-corrosive protective coating Nitozinc Primer, fixing wooden battens etc. as required, taking accura+D15te levels and fixing level screeds. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Providing and fixing 45 GSM glass fibre mess Make - as approved by Engineer-in-Charge

Section built-up in spalled areas using high strength repair mortar Renderoc SP40/free flow microconcrete Renderoc RG. The cured system should achieve at least 45 Mpa compressive strength after 28 days of curing. (Thickness upto 25 mm.) Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

V groove chase cutting and resealing with fresh mortar 1:4 and plasticizer CONPLAST P 211 (Proportion - 200 ml per bag of cement) & aggregate pieces. (Groove Size 20mmX20mm) Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Providing and applying arcylic bonding agent NITOBOND AR before backing coat & before finish plaster surface as per manufacturer's specification. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Backing Coat / 1st Coat of plaster Fixing level screeds @ every 5' approximately. Rendering best quality sand faced plaster in two coats using 1:4 mortar, on gunited/non-gunited surface, with addition of Polymer Anti - shrinkage compound CONPLAST WL (Proportion - 200 ml per bag of cement), to an average thickness of 1". Mortar will be machine mixed, volumetrically batched, and only washed river sand will be used with silt content less than 4%.Thickness of 1st coat will be 20-25 mm. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

Addition of fibre in backing coat plaster in proportion of 200 gm. Natural fibre : 1 bag of cement etc. as directed by Engineer-in-Charge.

Patially damaged chajja repairing with mortar (1:4) admixed with latex and non shrinkage adhesive with slope 1:10 with haulawring at wall faced.

Providing & fixing new PVC pipe SWR quality 'Supreme' or 'Prince' make ISI marked heavy duty with ISI assorted fittings such as tee, bend, connector, cowl, offset, Single or Double 'Y' junction including cutting hole in wall/ chajja providing teekwood block GI clamp's and nails making joint with waterproof cement solvent etc. complete.. 100 mm dia. For Rain Water

Adanga Marble on top of parapet wall (above 4" wide in 1:5 mortar) colour/ shade as approved by Engineer-in-Charge.

Providing and applying two coats of Anticarbonation, high performance aliphatic acrylate based UV- resistant , breathable protective and decorative coating for concrete and masonry DEKGUARD STD comprising of a single component, penetrating silane/siloxane primer and a single component aliphatic acrylate, solvent based top coat,providing resistance to aggressive agents, UV rays and rain at a total dry film thickness of 150 microns. Make -Fosroc/ Pidilite/ BASF / Sika / Cico / Impermo / ACCOPROOF / MYK SCHOMBURG

SUB HEAD - VI : PLINTH PROTECTION:

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 coarse sand (zone - III) : 6 graded stone aggregate 20 mm nominal size) over 75mm thick bed of dry brick ballast 40 mm nominal size, well rammed and consolidated and grouted with fine sand, including necessary excavation, levelling & dressing & finishing the top smooth etc all as directed by Engineer-in-Charge.

BHARDWAJ BUILDERS

RANABIR CONSTRUCTION