Repairing and Painting the Middle Transit Navigational Tower at north of North Breakwater

Amount

Supplying the structural steel, MS Flats, Square Rods, Angles, Channels etc., for vertical members / bracing /stiffeners / Base plates or for any other usage as a structural member, fabricating, welding and erecting the frame work in position at the locations shown in the drawing including all labour, materials, conveyance, tools & plants, etc., complete and as directed by the departmental officers (Note : 1. While fabricating, necessary holes and bolt & nut shall be provided at no extra cost in the structural members. 2. In case, the specified MS section is not available in the market, the nearest alternative section may be used after approval of the Engineer).

Painting the steel and other metal surfaces with Two coats of ready mixed anticorrosive epoxy paint of ISI make at all location prepared and applied as per manufacture's specifications over one coat of red oxide Zine chromate priming coat surface , By spraying, interior to give an even shade, cleaning the surface of all dirt, dust and other foreign matter, cost including all epoxy painting materials, hire charges of spraying machine, brushes, labour charges, all lead & lift, handling and transportation charges, Scaffolding System and minor tools etc., complete and as directed by the Engineering in charges.

Surface preparation of structural components, chipping/cleaning and removing the steel casing, if necessary, removing spilled concrete and cleaning up to trace of rust in the concrete behind the rebars and sand blasting or water jet blasted the surface of concrete and reinforcement steel to remove all rust and scales, chip 25mm approximately or as directed behind rebars for micro concrete flow. The rate shall include cost of equipments, plants, materials, sand instrumentation, hiring of boat, catamaran, Pontoon, labour and survey, fuel etc., complete and as directed by the Engineering In charges.

Supplying & applying Epoxy resin Bonding agent NITOBOND EP for bonding new Micro concrete to existing concrete surface all as per the conditions of Manufacturer. The rate shall include cost of labour, cost of materials and transport etc, complete and as directed by the Engineering In charge.

Providing and laying Plain Cement Concrete 1:1.5:3 (One part of cement, One and a half parts of M. Sand (Crushed Stone Sand) & Three Parts of graded stone aggregate (i.e.) 2 parts of 20mm nominal size graded metal & 1 part of 10mm nominal size graded metal) for RCC works using 20 mm nominal size graded metal including mixing, laying, levelling, consolidation, finishing and curing etc., complete complying with AISS and as directed by the departmental officers.

Supplying, mixing, and placing of free flow 100mm thick microconcrete Renderoc RG or equivalent mixed with 10mm to 6mm downgraded, cleaned, washed and saturated surface dry aggregates. The proportion of aggregates shall be 50% by weight of microconcrete for pile 100%for extension of pile caps all as per the drawing and as per specification of manufacturer. The grout shall be placed for an average thickness of 70mm using positive displacement pump. The rate shall include cost of materials, equipments, inter carting, drilling holes in deck/beam, missing, placing, making arrangements, for supply, microconcrete, labour, transport and fuel, cost of boat hiring, catamaran, Pontoon, curing etc., complete and including Fabrication shutters for facilitating micro concrete work using water proof fly wood/FRP sheets of thickness 8mm with ribs all as per drawings and as directed including ribs and fittings and supporting members, equipments, plants, cost of materials, cost of boat hiring, catamaran, Pontoon, labour and fuel labour and transport etc., complete and as directed by the Engineering In charge.

The Acrylic emulsion cement modified and water based concrete curing membrane NITOBOND AR or equivalent shall be diluted with water at 1:1 ratio. Immediately after the concrete finish, the membranes shall be sprayed over the concrete finished area without any gap or pinhole. The cost of all materials, tools and all labour charges etc., complete and as direct by the Engineering In charge.

Application of protective coating to external surface above water level: The concrete surface shall be cleaned with using high jet wash and allow it to dry. The surface shall be finished with polymer modified mortar in case of any pin hole/slip for shuttering holes etc. The patch prepared portion shall be cured with membrane curing NITOBOND AR or equivalent by spraying method. After 24 hours of membrane curing, the Siliance/Silone primer DEKGUARD Primer or equivalent shall be sprayed over the repaired as well as the non repaired as well as the non repaired locations at a dosage of 0.3 to 0.40 Litres/Sqm by using the airless nozzle gun. Primer applied to the repaired and non repaired locations shall be sprayed with single component aliphatic acrylate UV resistant protective and decorative coating DEKGUARDS in two coats and each coat shall be 150 microns DFT. The cost of all materials cost of hire charges of machineries, tools and all labour charges etc., complete and as direct by the Engineering In charges.

REAL ASSOCIATES

SRI BALAJI CONSTRUCTION