PROVISION OF PU FLOORING IN THE TURRET ASSEMBLY GANGWAY AT TANK SHOP FOR OH AUGMENTATION PROJECT AT HVF, AVADI.

Amount

Demolition of cement concrete(unreinforced ) in of any thickness including plastering

Supply and laying 400 micron thick HDPE sheet (VIRIGIN QUALITY) water proof wrinkle free without puncture having minium weight 390gm/sqm over tack coat /sand cushion as specified in the design with over lap between adjacent strips and at transverse joint as minimum 300 mm.

Material and labour for sand filling in foundation including watering and consolidation.

M & L for providing RCC M20 Concrete (1:1.5:3) in Foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, etc.; basement slabs, under-reamed piles and mass concrete

Material and Labour for providing Vaccum dewatering method to remove excess water from the laid concrete and filler pad and suction mat shall be laid on the freshly laid concrete which will not allow cement paster to flow out, and the suction pump are then started immediately to remove the excess water. The suction time normally is 20 to 30 minutes or as specified and as required and making the surface hard enough to enable to carry the floating operations for 200 mm thick slab including finishing the top surface with mechanical trowel) The finished surface should be smooth & even.

Material and Labour for Non Metallic floor Hardner of pure carborandum based for concrete road surfaces the application and proportions are as per the manufacturer specifications. (Make: Master Builders Solutions/MYK Arment /Dr. Fixit / Fosroc /Bostik /Alchemica /Tecnopol) or suitably equivalent make as approved by EIC.

Supply and fixing of mild steel reinforcement TMT bars 6mm dia to 8 mm dia including bending, cranking, hooking and tieing with mild steel wire not less than 0.90mm dia.

Surface preparation of existing concrete flooring including scarfying, grinding or light shot blasting of concrete surface, proper cleaning, removing of loose particals, paint residuals, repairing of floor cracks and dents, removing the oil, grease, other contaminations in the flooring Two times washing the same using necessary chemicals.

Supply and application of PU based filling material for repairing blowholes, Pin holes, bug holes and other surface undulations of distressed concrete in patches using Suitable polyurethane material. Applying of required thickness in single layer of approved product finished flush with existing surface inclusive of Manpower, Material and Equipment and necessary form work if required. Material should be of reputed (make like Master Builders Solutions / Dr.Cipy /Fosroc/ MYK arment) or suitably equivalent make as approved by EIC (Payment shall be made as per actual consumption of mortar in Kgs.).

M & L for mixing and laying of PU Sealant over concrete joints and to be sealed using over the Backer rod which shall be position on the filler board of the Expansion joints including surface preparation, providing backer rod of required dia. Approximate size of expansion joints are 25 mm x 50 mm. Material should be of reputed( make like Master Builders Solutions / Dr.Cipy /Fosroc/ MYK arment )or suitably equivalent make as approved by EIC .

Supply and application of 4mm thick (1 mm of Scratch Coat and 3 mm of Top Coat) self-smoothening polyurethane concrete Flooring system, including surface preparation before applicationof polyurethane concrete flooring like (U-crete MF of Master Builder Solutions / Nitofloor SL3000 UT of Fosroc/ Duracrete of Dr.Cipy/FloArm Top HPU 4 Plus of MYK arment)or suitably equivalent make, reputed flooring system only. Make and colour should be approved by EIC. The entire scope of the work are as follows: Surface Preparation: The surface of the substrate should be made absolutely dry & free from dust,oil,laitance to achieve the maximum bond strength between substrate & flooring system. Making necessary grooves of size 10mm X 10mm size all along the line of edge of the floor and creating mechanical bond with the existing flooring by cutting necessary grooves in the flooring, all around the existing flooring joints/ edges. Scratch Coat: The material must be applied to the prepared substrate @ minimum 1 mm thickenes (depending upon the floor condition) as a scratch coat to fill up the pores of existing flooring surface, after surface preparation and allowed to dry until it is tack free, prior to the application of the topping. All the damaged part of existing flooring system must be filled with above material. Floor Topping: Providing and application of self-smoothening Polyurethane Flooring system of 3 mm thickness with Mixed density 1.8 gm/cc and above, Adhesive pullout bond strenght above 1.5 Mpa, Tensile strength of 5-10 Mpa as per BS/ASTM Specification, compressive strength from 40 to 56 Mpa as BS/ASTM, Flexural strength of minimum 17 to 21 Mpa, Water absorption should be 0 to 0.06%, Chemical & slip resistance should be at desired level as per the specification of the manufacturer. (Make: Master Builders Solutions /Dr. Cipy / Fosroc/MYK arment)or suitably equivalent make as approved by EIC (Payment shall be made in square meters of the floor area for complete work as mentioned above.) The application should be done through authorised applicator of manufacturer..

M & L for applying polyurethane 100 - 150 mm width Line marking coating using of (Fosroc Nitoflor PUW100/Dr. Cipy FK 666 of Dr. Cipy/FloArm Top PUD of MYK arment./ U-crete of Master Builders solutions )or suitably equivalent make at 90/100 microns thick according to the lay out and width will be decided and as approved by EIC.

Removal of excavated debris/Rocks materials to a lead exceeding 250 m but not exceeding 500 m and depositing where directed including, spreading & leveling

ACS TECHNOLOGIES CHENNAI (BID ID -882945)

S VINAYAGAMURTHY (BID ID -883355)

Santhosh Infrastructure (BID ID -883205)

Padmaja Systems and Services Pvt Ltd (BID ID -875722)

M/s.MSK Construction (BID ID -880619)