Renovation and Strengthening of RCC Chimney in Recovery Boiler#3 upto 90mtr height at TNPL Unit I (Refloat)

Amount

SUPPLY AND ERECTION OF TWO STAGE SCAFFOLDING WITH MS PIPES, PLATFORMS, ACCESS LADDERS TO MEET SAFETY NORMS AND SUPPORTS INCLUDING COST OF ALL MATERIALS, LABOUR ETC., AROUND RCC PLAIN / TAPERED CHIMNEY OF HEIGHT 90 MTR AS PER DRAWING AND OF MAXIMUM SCAFFOLDING WIDTH AS 1.5 MTR WITH STABILITY AGAINST WIND FORCE AND MAINTAIN SAFETY PROCEDURE AND REMOVING THE SAME AFTER COMPLETION OF WORK.

SURFACE-PREPARATION FOR DAMAGED AND LOOSE CONCRETE OF THE COLUMN / BEAM / SLAB / WALL AND OTHER ELEMENTS CHIPPED OFF AND CLEAN THE SURFACE AND MAKE SURE THAT THE SURFACE IS CLEAN AND FREE FROM LOOSE PARTICLE. THE RATE SHALL INCLUDE THE COST OF LABOUR CHARGES ALL TOOLS AND TACKLES COMPLETE AS DIRECTED BY ENGINEER INCHARGE.

TAKE DELIVERY OF REINFORCEMENT AND ANCHORING THE STIRRUPS TIE THEM TO THE PREFIXED SHEAR CONNECTORS THE ADDITIONAL REBAR ACTS MONOLITHIC WITH THE EXISTING ONES AND CORE CONCRETE. THE DIAMETER OF THE REBAR’S ARE REDUCED, PROVIDE 8MM DIA STIRRUPS IN THE FORM OF 2 "U" SHAPED. TIE THEM PROPERLY EXISTING ONE,THE RATE SHALL INCLUDE THE COST OF LABOUR CHARGES ALL TOOLS AND TACKLES COMPLETE AS DIRECTED BY ENGINEER INCHARGE, REINFORCEMENT STEEL SUPPLIED BY TNPL FREE OF COST.

TAKE DELIVERY OF REINFORCEMENT AND PROVDIING ADDITIONAL REINFORCEMENT INSTEAD OF EXISTING CORRODED REBAR, AFTER CHIPPED OF THE LOOSE CONCRETE PIECES CHECK THE DIAMETER OF THE EXISTING REBARS AND IF THE DIAMETER IS LESS THAN 30% OF THE ORIGINAL DIAMETER, PROVIDE ADDITIONAL REINFORCEMENT. CUT THE REQUIRED BARS AS MAIN REINFORCEMENT TO THE REQUIRED LENGTH WITH PROPER DEVELOPMENT LENGTH. TIE THEM / WELDTHEM TO THE PREFIXED SHEAR CONNECTORS SO THAT THE ADDITIONAL REBAR ACTS MONOLITHICALLY WITH THE EXISTING ONES AND CORE CONCRETE. IN THE CASE OF THE SHEAR REINFORCEMENT ALSO, IF THE DIAMETER OF THE REBARS ARE REDUCED,PROVIDE 8MM DIA STIRRUPS IN THE FORM OF 2 "U" SHAPED BARS. TIE THEM / WELD THEM PROPERLY SO THAT IT HAS A TIGHT CONTACT WITH THE MAIN BARS.THE RATE SHALL INCLUDE THE COST OF ALL THE OPERATIONS AND ETC COMPLETE (REINFORCEMENT STEEL SHALL BE SUPPLIED BY TNPL AT FREE OF COST)

PROVIDING ANTI CORROSIVE COATING OVER THE REBARS USING THE RUST REMOVER IF THERE EXISTS ANY RUST, OTHERWISE CLEAN THE REBAR FREE OF FOREIGN MATERIAL. MIX THE BASE AND HARDENER OF THE ANTI-CORROSIVE COATING LIKE NITOZINC PRIMER OF FOSROC / SIKA / ARDEX ENDURA / DEMACH MECHANICALLY USING A SLOW SPEED HEAVY DUTY DRILLING MACHINE FITTED WITH MIXING PADDLE. APPLY THE MIXED MATERIALS TO THE CLEANED REBAR AND ALLOW IT TO DRY COMPLETE. THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

PROVIDING EPOXY JOINTING COMPOUND FOR OLD AND NEW CONCRETE SURFACE, BEFORE APPLY BONDING AGENT CLEAN THE CONCRETE SURFACE, REMOVE THE ALL LOOSE PARTICLE, IF ANY MAKE SURE THAT THE FORM WORK IS READY FOR POSITIONING. MIX THE BASE AND HARDENER OF THE EPOXY RESIN JOINTING COMPOUND AND APPLY THE SAME TO THE PREPARED SURFACE. CARE SHOULD BE TAKEN THAT THE MICRO CONCRETE NEED TO BE DONE WITH APPLICATION OF EPOXY JOINTING COMPOUND NITOBOND EP POLIMER MODIFIED MORTAR OF FOSROC / SIKA / BASF / ARDEX ENDURA / DEMACH. THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

PROVIDING FORM WORK INCLUDING STRUTTING,PROPPING, AS PER THE REQUIRED LINE AND LENGTH , FORM WORK SHOULD BE RIGID TO PREVENT LOSS OF GROUT OR MORTAR CONCRETE FROM CONCRETE AT ALL STAGES & APPROPRIATE TO THE METHODS OF PLACING & COMPACTING AS PER STANDARD SPECIFICATION. THE SHUTTERING SHOULD BE MADE OF SUITABLE MATERIAL I.E., TIMBER, PLYWOOD, DEPENDING UPON SUITABLE FOR SITE CONDITION. THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

PROVIDING AND APPLYING MICRO CONCRETE USING RENDEROC RG OF FOSROC / SIKA / BASF / ARDEX ENDURA / DEMACH WITH 12MM DOWNGRADED CHIPS ON SITE IN SSD CONDITION. AGGREGATE SHALL BE ADDED AT THE RATE OF 35% BY WEIGHT OF POWDER WITH CONTROLLED WATER POWDER RATIO OF 0.16 FOR THICKER SECTION MORE THAN 100MM. AN APPROVED CONCRETE MIXER OR A SLOW SPEED HEAVY DUTY DRILLING MACHINE FITTED WITH MIXING PADDLE SHALL BE USED AND CONTINUOUS POURING IS RECOMMENDED. REMOVE THE FORMWORK AFTER 24 HOURS CHECK FOR ANY SURFACE DEFECTS AND IF SO APPLY THE POLYMER MODIFIED MORTAR.THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

PROVIDING AND APPLYING POLYMER MODIFIED MORTAR RENDEROC SP40 OF FOSROC / BASF / SIKA / ARDEX ENDURA / DEMACH MIXED WITH WATER IN RATIO 0.16 A HIGH STRENGTH, SHRINKAGE CONTROLLED CEMENTITIOUS REPAIR MORTAR APPLIED AT AN AVERAGE THICKNESS OF 25MM USING A STEEL TROWEL IN ONE LAYER AND FINISHED USING A DAMP SPONGE. ONCE THE POINTING MORTAR HAS DRIED, CURING TO BE CARRIED OUT IMMEDIATELY ASPER REGULAR CURING PRACTICE OR USING CURING COMPOUND. THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE. HIGHER THICKNESS SHALL BE BUILT IN LAYERS AND AT EXTRA COST.

PROVIDING CURING COMPOUND IMMEDIATELY AFTER STRIKING THE FORM WORK OR AFTER COMPLETION OF THE REPAIR WORKS, THE SURFACE SHOULD BE SPRAYED WITH WATER ONCE AND FOLLOWED BY APPLICATION OF MEMBRANE BASED CURING COMPOUND LIKE CONCURE 1315 OF FOSROC / SIKA / BASF/ ARDEX ENDURA / DEMACH AS A CURING MEMBRANE.THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

PROVIDING AND APPLYING TWO COATS OF HIGH PERFORMANCE ELASTOMERIC ANTI CARBONATION WATER BASED ACRYLIC POLYMER COATING DEKGUARD E 2000 OF FOSROC / BASF / SIKA / ARDEX ENDURA / DEMACH OVER THE PREPARED CONCRETE SURFACE AND PRIMED WITH DEKGUARD WB PRIMER / EQUIVLANET TO ACHIEVE THICKNESS OF 200 MICRONS. THE SURFACE IMPERFECTIONS IF ANY SHALL BE SMOOTHLY RENDERED USING RENDEROC FC OR EQUIVALENT. THE COATING SHOULD BE EXCELLENT BARRIER TO CARBON DI OXIDE, CHLORIDE IONS, SULPHATES, OXYGEN, WATER. WITHSTANDS SUBSTRATE CRACK ACCOMMODATION UPTO 2MM & CYCLIC MOVEMENT UP TO 1MM. IT SHALL HAVE HIGH UV RESISTANCE AND HIGHLY DURABLE IN ALL CLIMATIC CONDITIONS. PERCENTAGE OF WATER ABSORPTION, PERMEABILITY & DEPTH OF CARBONATION SHALL BE NIL WHILE COMPARED AGAINST CONTROL CONCRETE. THE QUOTED RATE SHALL INCLUDE ALL MATERIAL, SURFACE PREPARATION, TOOLS, SCAFFOLDINGS, SAFETY EQUIPMENT, LABOURS, ETC COMPLETE.

PROVIDING AND APPLYING TWO COATS OF HEAT RESISTANT COATING AND CHEMICAL RESISTANT PROTECTIVE COATING FOR CHIMNEY TOP PORTION FOR HEAT RESISTANCE COATINGS, APPLY THREE COATS OF HEAT RESISTANT OF FOSROC / BASF / SIKA / ARDEX ENDURA / DEMACH ALUMINIUM PAINT EITHER 200°C HERE THE FIRST COAT ACT AS PRIMER COAT AND THE CORROSION PROTECTION IS BY " BARRIER PROTECTION"

PROVIDING AND APPLYING OF 230GSM CARBON FIBER WRAPPING SYSTEM METHOD OF APPLY ONE COAT OF EPOXY PRIMER THEN BLOWHOLES AND IMPERFECTIONS SHALL BE SEALED WITH EPOXY PUTTY, FOLLOWED BY EPOXY PRIMER THEN APPLY RESIN IS THE EASY TO APPLY 100% SOLIDS MATEIRAL THAT PERMITS ADHESION OF A LIGHTWEIGHT SHEET, WITHIN THE COMPOSITE STRENTHENING SYSTEM, THE COMPOSITE FIBER MUST BE CUT BEFORE APPLICATION OF COMPOSITE SATURATE INTO PRESCRIBED SIZES USING SCISSORS OR CUTTERS.FIRST THE THIN LAYER OF SATURATE LAYER (40%) IS APPLIED ON SUBSTRATE SURFACE. THE COATED SURFACE SHOULD BE STRONGLY SQUEEZED IN THE FIBER LONGITUDINAL DIRECTION TWO OR THREE TIMES WITH THE ROLLER AND SPATULA IN ORDER TO IMPREGNATE THE FIBER SHEET IN THE SAME MANNER AS ABOVE, IN CASES WHERE MORE THAN ONE LAYER OF FIBER SHEET IS TO BE APPLIED, THE ABOVE APPLICATION METHOD FOR COMPOSITE SATURATE SHOULD BE REPEATED, FINALLY THE SHEET WEIGHTS IN EXCESS OF CARBON FIBER 230GSM PROPER SATURATION IS BEST ACHIEVED BY PASSING THE SHEET THROUGH AN EPOXY BATH, WHCIH FEATURES ROLLERS WHICH CONTROL THE AMOUNT OF RESIN APPLIED TO THE SHEET. THE PRODUCT SHOULD BE OF FOSROC / BASF / SIKA / ARDEX ENDURA / DEMACH AS PER MANUFACTURING RECOMMENDATION

PROVIDING AND APPLYING EPOXY INJECTION GROUTING FOR HONEY COMBS/WEEKPORTION THE EPOXY RESIN CONBEXTRA EP10 OF FOSROC / BASF / SIKA / ARDEX ENDURA / DEMACH IN ALL THE HONEY COMB & CRACKED SURFACES MIXING AND INJECTION OF GROUT USING MECHANICAL GROUTING PUMPS AND WITH GI NRV PACKERS FOR EPOXY GROUTING. THE RATE INCLUSIVE OF ALL MACHINERIES LABOUR CHARGES AND FIXING OF PACKERS WITH NITOMORTAR S / LOKFIX OR EQUIVALENT. THE RATE SHALL INCLUDE THE COST OF ALL MATERIALS, LABOUR CHARGES, CONSUMABLES ALL TOOLS AND TACKLES AS DIRECTED BY THE ENGINEER INCHARGE COMPLETE.

Bidder Name

Amount in Words

YUGA & JANA CONSTRUCTIONS

M.S.ENTERPRISES

YUGA & JANA CONSTRUCTIONS