S/R of Roads in NDMC area.SH Repair and Rehabilitation of Ranjit Singh Flyover, NDMC New

Amount

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

Providing and laying in position machine batched and machine mixed design mix M-25 grade cement concrete for reinforced cement concrete work, using cement content as per approved design mix, including pumping of concrete to site of laying but excluding the cost of centering, shuttering, finishing and reinforcement, including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer-in-charge.“(Note :- Cement content considered in this item is @ 330 kg/cum.“Excess/ less cement used as per design mix is payable/recoverable separately).All works above plinth level upto floor V level

Extra for providing richer mixes at all floor levels. Note:- Excess/less cement over the specified cement content used is payable /recoverable separately.Providing M-35 grade concrete instead of M-25 grade BMC/ RMC. (Note : Cement content considered in M-35 is @ 350 kg/ cum)

Shotcreting R.C.C. columns, beams and slabs etc. in layers with approved design mix concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10 mm maximum size in proportion as per design criteria] including the cost of centering and shuttering at edges and corners etc. as directed by Engineerin- Charge Note: Rates shall include the providing necessary ground wires etc. The levelling gauges, if used, shall be paid for separately. Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding/ tapping with a blunt metal instrument. 25mm thick in Grade M 25 with cement content not less than 330 kg per cum

Providing and fixing hard drawn steel wire fabric of size 75 x25 mm mesh or other suitable size wire mesh to be fixed & firmly anchored to the concrete surface by means of “L” shaped mild steel shear key welded with existing reinforcement including the cost of materials, labour, tool & plants as approved by Engineer-in-charge.

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position, welding with old steel reinforcement and binding all complete above plinth level. Thermo-Mechanically Treated bars of grade Fe-500D or more.

Providing 50 mm wide strip seal type expansion joint complete as per drawing and specification or MORTH or as directed by Engineer-in-charge. The design and drawings are to be prepared by the manufacturer as per existing condition and shall be submitted to Engineer for approval before actual execution of work as per Clause 2607 of Morth The materials shall be tested in accordance with these specifications and shall meet the prescribed criteria. The manufacturer / supplier shall furnish the requisite certificates from the recognised testing laboratory of India or abroad. Guarantee Period for service life of new expansion joints shall be minimum 15 years. The agency will give a written guarantee bond for the same to the department. If defects are found within this period, the agency shall remove the defective expansion joints and replace the same with new expansion joint without any cost / charges to the department.

Centering and shuttering including strutting, propping etc. and removal of form for : (a) Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

(b) Suspended floors, roofs, landings, balconies and access platform with water proof ply 12 mm thick

Providing and fixing of Neoprene Pad of dimensions 1.75 m x 0.45 m x 0.025 m at each pier locations of required design and specifications completed in all respect as directed by Engineer-in-charge

Providing, fitting and fixing in position true in line and level elastomeric bearings (conforming to IRC: 83 (Part-II) section- IX and clause 2005 of MORTH specifications) on Pier cap / abutment cap, complete in all respect as per specification. Item includes approval 10 from the Engineer-in-charge, supplyig , testing, transportation to site, storage with all handling, lead, lift etc. and placing the permanent bearings in position. Cost of providing temporary bearings / supports as required and other incidental expenses (if any) shall also be included. Bearings shall be provided with a warranty of trouble free maintenance of 15 years.

Lifting of deck uniformly by deploying appropriate hydraulic jacks in combination with screw jacks with centralized power pack upto 500 mm to facilitate for removing of existing bearings appropriately without damaging the girders. After completion of the restoration of main girders at supports, strengthening/restoration of pedestal and replacement of proposed bearings, lowering of deck shall be carried out to its original position without causing any damage to the deck as per drawing and standard practice .The item includes all labour, materials, equipment etc. required for lifting complete as per direction and instructions of Engineer in Charge including MORTH technical specification (clause 2808). The scope of work in the item includes lifting from underneath or from over the deck as per requirement at site, Lifting of super-structure of bridge for resetting if required/refixing of new bearings including removal of old bearings and including all higher and running expenses of all plants, jacks, machines and equipments temporary supports, required for keeping the superstructure in lifted position for completing the operation, lowering of super-structure on bearings, without causing any detrimental effect to any part of the bridge structure complete but excluding cost of replaced bearings. (a) Span beyond 30m

Providing and applying ready mix pre-packed cement based polymer/ Latex modified mortar/ concrete (minimum compressive strength at 7 days not less than 20 N/sqm and that of 28 days not less than 38 N/sqm) confirming to ASTM-C-1059-86 Type II with 10% SBR latex by weight of cement for different thickness in over spalled concrete surfaces in Box girders, diaphragms, brackets, deck slab, pier/abutment etc. as per the methodolgy given in Clause 8.2 of CRRI report.. The item is inclusive of all scaffolding, shuttering, labour, materials, equipment etc. complete as per specifications and instructions of Engineer in Charge. The rate is inclusive applying structural layer/coat confirming to ASTM-C-882-91 prior to application of polymer modified mortar to ensure bond between old concrete & new system by brush application, levelling, profiling etc. complete as per specifications and instructions of Engineer in charge.

Providing and inserting galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required dia upto a depth as specified at required spacing and making the hole and crack dust free by blowing compressed air, sealing the wtih distance between injection nipple with epoxy putty and clean the surfaces with suction method and allow it to cure complete as directed by Engineer-in-charge and the methodology given clause 8.1 of CRRI report. (a) 12 to 16 mm dia with a depth up to 50 mm

(b) 16 to 20 mm dia with a depth 50 to 100 mm

Grouting for cracks on the surface or in depth of concrete complete in all respects as per the specifications. Work includes drilling of holes of size as directed, fixing of nozzles, complete , cleaning of dust and loose particles by suction method. It also includes saturation of concrete surface at crack as directed, filling the cracks with low viscous (100-200 cps)-low modulus (1000-2500 MPa) Epoxy resin as per the specification and grouting the cracks complete in all respect and as directed by engineer-in-charge Work includes making 'V' groove of 13mm wide and 20mm deep over crack line by electrically operated angle grinder with diamond concrete saw blade and cleaning it by air blower as directed by Engineer-in-charge. Sealing of exposed 'V' groove of 13mm wide and 20mm deep with solvent- free, moisture tolerant, thixotropic, two part structural adhesive and epoxy repair mortar cum surface levelling mortar.

Providing & fixing rebar of required length & diameter with approved make Epoxy resin wherever required in RCC members including power drilling, cleaning of holes, then rebars should be inserted in holes that should be filled with epoxy to ensure the bond as per manufacture recommendation complete as per site requirement and directions of Engineer-in-charge. Providing & fixing shear connectors of 16 mm dia TOR steel up to 160mm length with Sika Anchor Fix®-3030 Epoxy resin RCC members including power drilling, cleaning of holes, insertion of epoxy, placing shear connectors in position to ensure the bond as per manufacture recommendation complete as per site requirement and directions of Engineer-in-charge. (a) 16 mm x 160 mm

20 mm x 200 mm

25 mm x 250 mm

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect. SBR Polymer (@10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer

Chipping of unsound weak / loose concrete, concrete cover in damaged / honey combed areas with electric hammer or manually including removal of old corroded rebars, tapering all edges, making square shoulders of cavities etc. for max. 40 mm thickness and stacking of debris complete as per site requirement and directions of Engineer-in-charge.

Corrosion Protection to Exposed Reinforcement includes Supply and application of rust remover cum passivator to remove rust from existing reinforcement. It also includes Supply and apply a Epoxy based zinc rich primer for steel, an anti corrosive coating for rebar corrosion protection system as per the methodology given in Clause 8.2 of CRRI report

Cleaning of bearings including cleaning of steel plates, cleaning of rollers/rockers, base plate, top plate, with suitable cleaning agent and greasing of the bearings nclusive of providing and fixing damaged /missing nut-bolts, any other component, materials, labour, equipment etc. disposal of old grease at a suitable location, cleaning of grease from the parts other than the bearings, as per the Technical specifications and direction of Engineer –In Charge complete in all respects. (a) Rocker

(b) Rocker - cum- roller

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting and unloading the same at any C & D waste management site within 25 kms. lead i.e. Shastri park/ Burari/ Mundka including weighing at plant etc. complete as per direction of Engineer in charge. Weighing and unloading at the plant shall be as per procedures/ rules of the plant management. The rates are inclusive of all operations, labours, leads and lifts from site of work to the C & D waste plant. The processing fee of C & D management at prescribed rates will be deposited by the agency and the same shall be reimbursed by the department on production of only original cash receipts.

Purchase and taken away the dismantled materials – serviceable/unserviceable which is to be received from the work shall be taken away by the Contractor as and where basis for which cartage shall be borne by the contractor himself and against these material payment shall be made by the contractor to the department or necessary recoveries shall be made from the bill as per the quantities received for different materials. (a )Reinforcement/Steel bars from R.C.C work

Providing and erecting steel props (up to full height) braced at centre, resting on wedge and block to support the structure provisionally during repairing work and maintain them in position till required and as directed by engineer-in-charge.

Cold milling asphaltic surface/ pavement (removal) of BD/DBM-or any asphaltic material from road surface concrete surface) in thickness of 40 to 100 mm so as to maintain surface below in shape, slope and undamaged workable lay fresh layer of asphaltic material in line, level size depth as directed by engineer-in-charge including transportation and disposal of removed material from site for all lift and loads, cleaning of surface and making good of asphalting work including local repair or damage/ distress occured after milling etc. complete as per method and machinery prescribed in IRC.

Providing and laying stone matrix asphalt using stone aggregate of specified grading pre mixed with bitumen binder and filler using stablizing additive @ 0.30% by weight of total mix, transporting the hot mix to work site by tippers, laying with paver finisher equipped electronic sensor to the required grade level and alignment and rolling with smooth wheeled vibratory and tandem roller to achieve the desired compaction including spreading of aggregate of size 1 to 3 mm applied over the hot surface @ 1 to 2 Kg per square metre immediately after completion. Complete as per direction of Engineer-in-charge based on approved job mix formula. Density as per specification 40 compacted thickness with bitumen grade PMB-40 @ 6.20% (Percentage by weight of total mix) and lime filler @ 10% ( percentage by weight of aggregate) Prepared in Batch type HOT MIX PLANT of 100 -120 TPH capacity.

SANFIELD INDIA LIMITED