Comprehensive Maintenance of Overhead Tanks under GE U - II, Visakhapatnam

Amount

M & L for cleaning of Overhead Water Tanks of any Capacity located at various places at any height by removing the inlet and outlet coupling connections, emptying all dirty / muddy water from the tanks using Diesel / Electric Driven Non-Clogging Pumps, removing the Scale / Sludge / Mud / Algae / Vegetation formed including other foreign materials got deposited on sides of walls and bottom of the tanks [Internal and External Surfaces] by scrapping and brushing with wire brush, Cutting / Chipping the spalling concrete surfaces and trimming to receive the epoxy treatment, cleaning with pressure pump, washing with bleaching powder slurry and allowing to dry and then washing, cleaning with acid based material, corrosion inhibitors and dispersing agents and finally cleaning the tank with fresh water, replacement of unserviceable / defective inlet and outlet coupling and fittings etc. complete after completion all the comprehensive repairs and disposal and depositing the demolished material out of MD land complete all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying Two Coats of 200 Microns DFT using Thixotropic Epoxy Protective Coating using 2 Part Non-Toxic Solvent Free Epoxy Resin Coating, having 100% Solid Contents, approved by CFTRI [USFDA-175.300] with High Chemical Resistance on the water retaining portion and complies to ASTM D 2370 etc, Non-Toxic Cured Film shall meet the requirements as per IS – 9883, the coating shall be applied with a suitable stiff nylon brush on the cured and prepared surface [Remove loose dust, dirt etc. cleaning] by mixing the chemical with slow speed electric drill complete all as per as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for Strengthening or Retrofitting of concrete structural members [Beams / Columns] using Non Shrink Corrosion Resistant High Strength Rheoplastic Micro Concrete, Single Component, cement based duly mixed with water at site to produce a flowing Corrosion Resistant Micro Concrete including use and waste of water tight formwork to facilitate pouring of Micro Concrete complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Compressive Strength @ 1 Day : 15-16 MPa [b] Compressive Strength @ 28 Days : 45-50 Mpa [c] Flexural Strength @ 28 Days : 10 Mpa [d] Modulus of Elasticity in Compression : 28-30 kN/Sq.mm [e] Unrestrained Expansion : 1% – 4% [f] Flexural Strength @ 28 Days : ≥10 N/Sq.mm [g] The Micro Concrete shall have a Coefficient of Thermal Expansion similar to that of the Host Concrete. [h] The mixed density of Micro Concrete shall exceed 2200 – 2300 KG/Cu.m at 27ºC [i] The Micro Concrete shall be compatible with parent concrete & have thermal properties similar to concrete. [j] The Micro Concrete shall not bleed / segregate on adding water during mixing and shall have the flexibility of addition of aggregates while using for large pours. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying Two Component Solvent Free Resin Based agent having mixed density of 1.45 – 1.50 KG/Litre, rendering full hardness in 24 Hours complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Compressive Strength @ 7 Days : > 40 MPa [b] Tensile Strength @ 7 Days : > 15 MPa [c] Flexural Strength : > 25 Mpa [d] Bond Strength : > 11 MPa Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for drilling hole in RCC/Brick Structures using Drilling Machine up to a depth of 15 mm of 18 mm dia, removing dust, etc by vacuum cleaner and blowers, providing and fixing of heavy grade GI Pipe Nipple 15 mm dia, 100 mm long @ 1 metre centre to centre in both directions and injection of cement slurry mixed with Liquid Integral Waterproofing Compound conforming to IS – 2645, having Specific Gravity of 1.10 – 1.20 Grams / Cubic Centimeters, having Zero Chloride Content and Acrylic Bonding Agent having Specific Gravity of 1.02 Grams / Cubic Centimeters and Cementitious based Plasticised Grout Admixture @ 225 Grams / 50 KGs of Cement, having Zero Chloride Content, through nipple and closing ends of nipple with Epoxy Putty / Silica Jelly after injecting the chemicals mixed with cement slurry complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying Water Based Paraffin Wax Emulsion Compound complying with ASTM C309-90 by spraying on the surface to promote cement hydration and to reduce shrinkage and to increase durability complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Relative Density : 0.99 ~ 1.02 KG/Litre @ 25ºC [b] Specific Gravity : 1.02 [c] Minimum Application Temperature : 10°C Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for providing Crack Sealing Cementitious material in powder form, white coloured, suitable for easy application, finished or smoothened off with a putty blade or a damp sponge and also suitable for application of common paints / coatings including cutting grooves of size not less than 6mm X 6mm complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Setting Time : 15 Minutes [b] Compressive Strength @ 7 Days : 22 Mpa as per ASTM C 109 [c] Mixing Ratio : 1:2.5 [Water : Powder] Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for removing any undulations and bituminous traces, trimming, cleaning and washing the surfaces of any thickness to receive Impervious Layer / Guniting and providing an Impervious Layer / Guniting using Spray applied Mixture of Polymer based Ready-Mixed Powder with reduced rebound with water, sand and cement, having Fresh Wet Density of 2140 KG/Cu.m, Compressive Strength greater than 25 Mpa @ 28 Days complete as per the manufacturer’s instructions using pressure Guniting Machine for averaging 25-30mm thick at a pressure of 20 to 30 N/Sq.mm, covering of entire surface, finishing the top surface even and smooth using extra cement conforming to proper geometrics complete all as per Manufacturer's Instructions and Data Sheet and disposal and depositing the demolished material out of MD land complete all as specified and as directed. Note: The nozzle shall be kept at a distance of about 750 mm to 850 mm from the surface to be treated and the velocity of nozzle shall vary from 120 to 160 Metres / Seconds. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying two coats of waterproofing and protective coating on prepared wall surfaces after proper curing of screed by mixing the chemical with slow speed electric drill complete all as per as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] The waterproofing system shall be Non-Toxic Cementitious Waterproofing Coating and shall have Multiple Corrosion Inhibiting Synergies producing High Performance Elastomeric, Non Volatile, Low Temperature Flexibility and shall comply with ASTM D4541, ASTM C836, DIN 1048p 5, ASTM D412 [b] Hardness : Mohr 'D' Scale of 20 [c] Wet Density : 1.66 g/cc [d] Flexibility : Flexible at low temperatures [e] Tensile Strength : > 0.4 Mpa [f] Elongation : > 20% [g] Adhesion to Substrate : >2.5 N/mm² [h] Waterproofing to withstand : 330 KPa Positive Pressure & 160 KPa Negative Pressure [i] Crack Bridging Properties : Up to 1mm Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying 10mm thick screed using One Component Fibre Reinforced PMM with water to produce thixotropic consistency using heavy-duty slow speed drill complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Mixing Temperature : 5ºC to 40ºC. [b] Compressive Strength @ 24 Hours : 15 Mpa [c] Compressive Strength @ 28 Days : 45 Mpa [d] Flexural Strength @ 7 Days : 7 Mpa [e] The prepared screed material shall compensate both plastic and hardened shrinkage and have minimum direct adhesive bond strength of greater than 2 MPa. Cement and sand can be used for finishing the top surface. [f] The material shall be alkaline, compatible with host concrete with similar thermal properties and shall achieve a Elastic Modulus of minimum 25 kN/Sq.mm. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for Cleaning / Preparation of the existing exposed reinforcement of Slab, Beam, Column, Walls, Chajjas, Parapets, etc. and any other RCC Structural members free from dust, loose material, surface contamination, rust, scale, mortar, concrete, other loose and deleterious materials by emery paper, wire brush and finally with dry cloth, and washed thoroughly with clean water, making substrata to Saturated Surface Dry and applying Rust Remover made of One Part Alkaline Based Material with Corrosion Inhibitors and Dispersing Agents, supplied as a clear brown solution, having Specific Gravity of 1.2-1.22, pH Value of 9.5-10, suitable to penetrate oil and grease, applied by brush to all accessible parts of exposed rusted metal surface and allowed to react with the chemical for 16-24 hours and the surface shall be again wire brushed to remove any leftover loose particles and finally the surface shall be thoroughly cleaned with clean water complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying thoroughly Water based Co-Polymer Emulsion [Supplied as Single Component White Liquid] over concrete or masonry surfaces @ 8-10 Sq.m / Litre / Coat, having high performance with Specific Gravity up to 1.02, formulated to be applied at maximum temperature of 30ºC, to achieve specific performance characteristics that shall dry to form a transparent finish to exposed concrete or masonry surface and shall have excellent water retention including preparation of surface, cleaning of dust, dirt etc. complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying Elastomeric Protective Coating in Two Coats @ 300 Micron each over concrete surfaces, having resistance to aggressive elements like Carbon Dioxide, UV Light, Rain, efflorescence and lime blooming, capable for hide surface undulations and fine surface cracks including preparation of surface, cleaning of dust, dirt etc. complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Adhesion Strength : > 1.0 N/Sq.mm [b] Tensile Strength : > 3 N/Sq.mm. [c] The material shall have UV resistant aliphatic acrylate to give resistance to long term weathering. [d] It shall have good resistance, good adhesion on all cement plasters. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for Welded Steel Wire Fabric / Expanded Metal of weight not exceeding 1 Kg per Sq.m, lathing to cleaned and prepared Concrete surfaces etc. including all laps, cutting and wastage complete all as specified and as directed.

M & L for Drilling Holes of depth 100mm with 14mm dia drill bit suitable for fixing 12mm dia rod for chemical anchoring of reinforcement in to the existing Columns / Beams / Chajjas with Hilti HIT-HY 70, complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for applying Single Component Cementitious Corrosion Inhibiting Primer [Blend of Portland Cements, Graded Fillers, Corrosion Inhibiting Additive and Re-Dispersible Polymers in Powder form] duly mixed with water to make slurry to steel reinforcement by brush to cover all the exposed / visible reinforcement surfaces to form a continuous film not less than 1mm thick @ 2 KG / Sq.m / 1 mm Thick complete all as per Manufacturer's Instructions and Data Sheet, all as specified and as directed. Note: The product shall have the following Characteristics: [a] Adhesion Bond Strength to Steel : 1 Mpa [b] Pot Life : 30 Minutes @ 30ºC [c] Touch Dry Time : 10-15 Minutes @ 30ºC [d] Mixture Density : 2.01-2.05. [e] Water / Powder Ratio by Weight : 0.3 Make: M/s. Sika India Pvt. Ltd. / M/s. Fosroc Chemicals India [P] Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s. STP Ltd. / M/s. Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Hindcon Chemical Ltd.

M & L for Use and removal of steel formwork to sides of Pillars, Posts, Struts, Columns, Stanchions of any shape / cross section, sides and soffits of Floor or Roof Beams, Beam Haunchings, Girders, Bressummers, Lintels, Cantilevers, Shelves including supports, overhangs, etc, splays between floors and beams and similar works, soffits of suspended slabs such as Roof Slabs, Floor Slabs, Landings and similar work [horizontal or sloping], Plain / Curved faces of Walls, Retaining Walls, Parapets and Staircase Railings and similar work including attached Pilasters, Buttresses, etc. vertical or to batter, Fins, Louvers, Fascia, Chullah hoods, Chajjas, Troughs and similar items including edges and similar works for fair finished surfaces of concrete complete all as specified and as directed.

S & F Reinforcement using High Strength Corrosion Resistant Deformed TMT Bars of Grade Fe–500D of 8mm dia and over, cut to length, bent to shape required including cranking, bending, spirally for hooping, hooking ends and binding with annealed mild steel wire not less than 0.9mm dia or securing with clips or welded complete all as specified and as directed.

Note for Serial Item No. 1 to 18: [a] 06 Nos. of Photographs of Overhead Water Tanks before and after Cleaning & Comprehensive Repairs shall be submitted to GE for record before claiming payment. [b] Sample testing of every Overhead Water Tank before and after Cleaning & Comprehensive Repairs from NABL Accredited Laboratory for Microbial parameters of water shall be submitted to GE for record before claiming payment. [c] The work shall be executed directly by the Manufacturer or their authorised applicator. The contractor shall obtain a written guarantee for the effectiveness of the Comprehensive Repairs carried out to the Overhead Water Tanks from the manufacturer shall be submitted to GE for record before claiming payment. The manufacturer shall also certify that the Comprehensive Repairs of the Overhead Water Tanks have been carried as per the standard engineering practices and also certify the strength and serviceability of the Overhead Water Tanks. [d] The rate quoted for respective items shall be deemed to be inclusive of all material, labour, expert supervision, Tools, Plant, Safety measures like safety belts, ropes, helmets, netting etc. required to work at any height as per site requirement and providing double scaffolding and as required and removal of the same on completion of the comprehensive repairs and disposal and depositing the demolished material out of MD land complete all as specified and as directed.

M/s Raghav Traders

Mahamaruti Constructions