REPAIR TO CERTAIN TO STATIC WATER TANK, FIRE FIGHTING SUMPS AND UNDER GROUND SUMPS IN THE AREA OF AGE B/R-II UNDER GE (NW) KARANJA

Amount

Notes : (a) Tenderer shall employ skilled manpower who has experience in the field. The tenderer shall furnish the following:- (i) Manufacturers test certificate with name of manufacturer and details of original product. (ii) Test certificates from any approved laboratory as directed by GE. The testing charges shall be borne by the tenderer. (b)Quoted rate shall be inclusive of all material, labours, tools and plants, scaffolding and working upto 20m to 25m height. (c) Adoption of necessary safety arrangement like safety belts, ropes, helmets, netting etc. which are required for safety of working at any height of the building shall be mandatory and deemed to be inclusive on quoted rates.

Removal of water and cleaning of existing water tank from inside surfaces of the tank by scraping down walls & bottom surface using steel wire brushes to remove all disputation/fungus, other micro-organisms etc. Using light hammer & wire brushes, taking out and removing sediment loose dirt/mud sludge, vegetation and other foreign materials completely from the internal and external surface of tank disposal of all the waste/spoil to a distance not exceeding 50 mtr. And washing repeatedly with acid based material, corrosion inhibitors and dispersing agents solution inside surfaces of tank with water and washing with clean water thoroughly and preparation of the surface to review new plaster complete all specified and directed.

Material and labour for removing of the cavities roughening the smooth surfaces, scrapping out / removing corrosion all loose/scale/rust etc from the visible reinforcement by applying oxide remover and cleaning the steel reinforcement properly, and then applying Polymer modified primer as per manufacturers instructions of exposed and new steel reinforcement complete all as specified and directed.

High strength epoxy resin based Injection Grouting, Automatic NRV packers in all surfaces from all access side Distance of injections will be 500 m c/c in matrix pattern until is submerged in dampness of chemical. Injection grouting using two component grouting polymer having low viscosity, high molecular weight, thermosetting to reach very deep pores, voids, cracks and honeycomb in the concrete, specific gravity of which shall be 0.95, pH of 2-4,viscosity of 20-25 sec by B/4 ford cup and having curing time of 30-90 minutes area by suitable gun/pump at required pressure (100 bar to 150 Bar, including cutting of nipples after curing etc and sealing the nozzles with epoxy putty and preparing the surface to match with the existing surfaces complete all as specified and directed.

M&L for filling blow holes and repair the cracks using cementitious crack sealer (thixotropic, solvent free, three component compound based on epoxy resins)cracks should be opened and filled in v-groove manner. Sealer should have density of 1.64-1.68 gm/cc , comprehensive strength @7 days -50 N/mm2 complete all as specified and directed.

M&L for providing and fixing welded MS wire mesh weighing not less than 1 kg/sqm on the prepared surface which should be cleaned and should be removed from dirt, fungus and all foreign material complete all as specified and directed

M&L for applying polymer modified primer for steel having MuCis technology and which is a blend of Portland cements, graded fillers, corrosion inhibiting additive, and re-dispersible polymers in powder form that when mixed with water forms slurry for application by brush to cover exposed reinforcement. The product shall achieve an adhesion bond strength of 1 MPa to steel. It has got a pot life of 30 minutes @ 30°C. The touch-dry time shall be 10-15 minutes @ 30°C. The mixed density shall be 2.01-2.05. The water/powder ratio by weight shall be 0.3. It shall achieve coverage of 2 kg /Sqm @ 1.0mm thickness, applying on visible reinforcement surfaces to form a continuous film not less than 1mm thick and preparing the surface to receive concept of epoxy grout mortar act including providing necessary proportions, bracing and runners to relieve the members from the load coming on it including scaffolding with working platform as required and as per design and pattern including preparing the surface to match with the existing surface, complete all specified and directed.

M&L for applying Epoxy Resin Based Concrete Bonding Agent for proper bonding between old surface with micro-concrete/new surface. The bonding agent shall be a two component solvent free epoxy supplied as ready to use at site. The product shall have a minimum pot life of 120 Min at 35°C and an open time of atleast 4-6 Hours @ 30°C up to which new concrete can be poured. It shall develop a minimum compressive strength of 40 MPa and a bond Strength of 11 MPa.

M&L for applying 25 mm screed with Portland cement based structural polymer mortar compound mixed with cement and sand at site to produce a thixotropic mortar applied by shortcrete/guniting machine. It should me physically and chemically compatible with the host concrete. To deposit this mixture on the concrete surface under a pressure of about 20 to 30 N/cm2.Delaminated, weak, damaged and deteriorated concrete and where necessary sound concrete shall be removed by suitable mechanical or very high pressure water blasting techniques (up to 110 MPa) . The nozzle is generally kept at a distance of about 750 mm to 850 mm from the surface to be treated and the velocity of nozzle varies from 120 to 160 m/sec, Thickness of the individual spray layers between 25 to 30MM complete all as specified and directed.

M&L for providing and spraying white, pigmented, wax based dispersion compound incorporating a special alkali reactive emulsion breaking system compound (comply with ASTM C309-90) over the plastered surface. This impervious film prevents excessive water evaporation which in turn permits more efficient cement hydration, thus reducing shrinkage and increasing durability. It shall have a specific gravity of 1.02 and the minimum application temperature shall be 10°C and shall have a coverage of 8-10m² /litre /coat complete all as specified and directed.

M&L for applying two coats of thixotropic epoxy protective coating with high chemical resistance on the water retaining portion .The coating should be applied on the cured surface after removing loose dust, dirt etc, cleaning, mixing using slow speed electric drill. The coating should be applied @ thickness of 100 microns. It should be applied with a suitable stiff nylon type brush complete all specified and directed.

M&L for providing and applying single component cement based free flowing grout with 10 mm washed aggregates; The grout shall be having non shrink property and a positive expansion of up to min 1 % in the plastic state and a flowability of 3 M at head of 250 mm for a gap width of 50 mm, developing a compressive strength of 25 MPa in 1 day & 60 MPa in 28 days, shall not bleed or segregate, having a minimum pot life of 20 minutes after which the expansion shall start, shall be also developing a flexural strength of Minimum 10 MPa & bond strength of 10 MPa, It shall have resistance to dynamic loads and specimens shall not get damaged /cracked on being subjected to alternate loads of 5 MPa to 25 MPa @ 500 Cycles per minute for minimum 2 Mio cycles, It shall be chloride free and creep resistant; with epoxy bonding agent having mix density of 1.45 to 1.5 kg/ltr, compressive strength(BS-6319 PT 3)-40 MPa at 7 days bond strength (ASTM- C 881)-11 MPa at 7 days having an overlay time of 3 hrs at 30°C pouring cementitious grout into the formwork using suitable arrangement or if required using pumping device for and the bottom shuttering after 7 days ensuring proper bond between the cementitious grout and existing concrete substrate etc including all tools and tackles as per accepting officer, complete all specified and directed.

M&L for application of Water based acrylic polymer primer cum sealer coating on prepared surface having high performance copolymer emulsion, formulated to achieve specific performance characteristics that shall dry to a transparent finish and supplied as a single component white liquid to exposed concrete or masonry surface after proper surface preparation, cleaning of dust, dirt etc. The system shall form a film and shall have excellent water retention after film formation. It shall have coverage @8-10 Sqm/lit/coat on prepared surface complete all as specified and directed .

M&L for providing and applying anti-yellowing coating, The coating to be applied on wall shall be liquid applied highly durable waterproof coating system for wall, based on high quality acrylic emulsion, functional filler, sunlight stable pigment and quality fungicides. It shall have properties that provide features like crack bridging ability, breathability, flexibility & exterior durability and resists micro-organism growth. It shall cover hairline cracks up to 0.5 mm effectively. It shall have excellent crack bridging ability and shall bridge cracks up to 2 mm width. The elongation at break is approx. 220 %. The tensile strength is 0.7 Mpa. It has a hardness shore ‘A’ scale of 80, with an adhesion strength of 3.4 Mpa. The coating is UV resistant, algae and fungus resistant, and has a water vapour permeability of 40 gm/m²/day and a crack bridging ability of 1-2 mm. The coating must be applied with temperature above 5°C and below 45°C. The coating shall be applied in two coats of by roller or brush application at the interval of 4-6 hours. Allow applied coating to dry or cure for 7 days complete all as specified and directed.

Dismantling/taking down old existing unserviceable cement plaster loose/unsound weaken cement concrete of any description and in any position from existing external/internal surfaces of Sump/Tank etc complete all as specified and directed.

Demolition of cement concrete of any type and in any position for below or above ground floors.complete all as specified and directed

M&L for PCC 1:2:4 type B-1 using 20mm graded stone aggregate as in coping, kneelers, apex,stones, bed plates, kerbs and likes including weathering, slightly rounded or chamfered angles and throating and including WPC by weight 3% of total cement content, complete all as specified and directed.

M&L for removing peepful tress or any type trees/vegetations with root from wall, roof slab, over head tank portions, shafts, rain water pipe portions etc, and applying acid or suitable chemical to the affected area to arrest further growth and making good damaged portions with PCC 1:2:4 complete all specified and directed.

M & L PCC (1:3:6) type C-2 using 40mm graded agg as in 75mm thick as in plinth protection/footpath. finished even & smooth using extra cement and including WPC by weight 3% of total cement content complete all as specified and directed

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

S&F in Framed work such as grills,gratings, etc.. with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks and similar work con- forming to Fe.290.Gde-E-165 complete all specified and directed.

Dismantling expanded metal,/welded wire fabrick n.exc 4 kg per sqm any thickness or mesh, fixed with steel or wood fillets, if any complete all as specified and as directed

S&F Welded steel wire fabric n exc 4 kg per Sqm supplied and fixed complete to wood or steel members complete all as specified and as directed

M&L preparation of new previously untreated steel and iron surfaces of any description not other wise described over 10 centimetre width or girth and applying two coats of synthetic enamel paint over a coat of red oxide zinc chromium primer complete all as specified and as directed.

M&L for scaling/volumetric marking with thick paint on internal surfaces of static water tank including all necessary preparation complete all as specified and directed.

Supply only integral water proofing compound complete all specified and directed.

Demolition of pre-cast concrete block walling in cement mortar including all quoins, arches, pillars etc. but excluding ashlar facings dressed stone work and pre cast concrete articles complete all as specified and directed.

M&L for pre-cast cement concrete block masonry with solid blocks, exc. 10 cm in width in type B1 (1:2:4) 20mm thick graded aggregate and setting in mortar (1:6) complete all as specified and as directed

Pheonix Engineers & Contractors

S N TRADERS

INDIA ENGINEERS AND CONTRACTORS

Neeraj construction company

M/s S.D Construction Co

S.P.TRADERS

USHA TRADERS

MOHAN SINGH BHADORIA

M/s R.D. Company

M/s Raghav Traders

YASH DEVELOPERS AND CONSTRUCTION COMPANY

M/S M.D. CONSTRUCTION .CO