Repair and Rehabilitation of 05 nos. Bridges

Amount

Maintenance of Culverts Slab type Maintenance of Slab type Culverts by way of clearing, Cleaning, Erosion repair, repairs to cracks, parapet walls and Protection works as per drawing and technical specification Clause 1908 for Rural Roads of MORD.

Dismantling of Structures Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 metres (Reference to MORT&H's specification clause 202)

Cleaning the exposed corroded Reinforcement as well as worn out concrete by sand blasting with air compressor including all materials, hire charges of machineries and labour etc. all complete as per technical specification and direction of the Engineer-in-Charge.

Removal of defective concrete, cleaning the surface thoroughly, applying the shotcrete mixture mechanically with compressed air under pressure, comprising of cement, sand, coarse aggregates, water and quick setting compound in the proportion as per clause 2807.1., sand and coarse aggregates conforming to IS: 383 and table 1 of IS: 9012 respectively, water cement ratio ranging from 0.35 to 0.50, density of gunite not less than 2000 kg/cum, strength not less than 25 Mpa and workmanship conforming to clause 2807.6 (Reference to MORT&H's specification 2807). For Bridges

Guniting concrete surface with cement mortar applied with compressor after cleaning surface and spraying with epoxy complete as per Technical Specification (Reference to MORT&H's specification 2807). For Bridges

Epoxy bonding of new concrete to old concrete ( crack/spalling shall be sealed with epoxy injection/grouting coating of epoxy resin @ 0.80kg /sqm should be applied ) (Reference to MORT&H's specification 2805). For Bridges

Providing anti-corrosive protective coating to inhibit the corrosion to HYSD reinforcements including two coats of anti-corrosive coatings of consumption as per manufacturer's specification, cleaning etc. complete as per the direction of the Engineer-in-Charge. For Bridges

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy (Reference to MORT&H's specification 2800). For Bridges

Sealing of cracks/porous concrete (within the limits of practical pressure 100kpa -400kpa until refusal ) by injection process through nipples/Grouting complete as per Technical Specification (Reference to MORT&H's specification 2806). Cement Grout For Bridges

Excavation for Structures Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material (Reference to MORT&H's specification 304). For Bridges

Plain/Reinforced cement concrete in sub-structure complete all including vibrating and compacting, finishing, curing, sampling, testing etc. by mechanically mixed as per drawing and Technical Specifications (Reference to MORT&H's specifications 1500, 1700 & 2200). PCC Grade M15 For Bridges

Plain/Reinforced cement concrete in sub-structure complete all including vibrating and compacting, finishing, curing, sampling, testing etc. by mechanically mixed as per drawing and Technical Specifications (Reference to MORT&H's specifications 1500, 1700 & 2200). RCC Grade M20 Height upto 5m Using concrete Mixer For Bridges

Supplying, binding, fixing etc. including initial straightening, cutting to requisite length, hooking and bending to correct shape, placing in proper postion of uncoated HYSD reinforcement bar in super-structure complete as per drawing and technical specifications (Reference to MORT&H's specification 1600) For Bridges

Providing weep holes in Brick masonry/Plain/ Reinforced concrete abutment, wing wall/ return wall with 100 mm dia AC/PVC/HDPC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing foce. Complete as per drawing and Technical Specifications (Reference to MORT&H's specifications 2706 & 2200). For Bridges

Providing and laying Filter material underneath pitching in slopes complete as per drawing and Technical specification Gradation of filter , Thickness of filter 200/300 mm (Reference to MORT&H's specification 2504). For Culvert & Bridges

Back filling behind abutment, wing wall and return wall complete including spriklring water and throughly compacted with plate compactor/power rammer in layers not exceeding 150mm compacted thickness as per drawing and Technical Specification (710.1.4 of IRC:78 & MoRTH's specification 2200). Sandy material For Bridges

Providing and laying Pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical specifications (Reference to MORT&H'sspecification 2504). For Bridges

Dismantling and removing of Damaged Concrete Railing. For Bridges

Repair of RCC Railing Carrying out repair of RCC M30 railing to bring it to the original shape. For Bridges

Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolerance of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequate space between vertical post for expansion, complete as per approved drawings and technical specifications (Reference to MORT&H's specifications 2703, 1500, 1600 & 1700). For Bridges

Drainage Spouts not less than 100 mm dia of corrosive resistance material ,spacing not exceeding 10 m. complete as per drawing and Technical specification (Reference to MORT&H's specification 2705). For Bridges

Hire and labour charges for staging with sal bullah for super structure of bridge (Major and Minor) including stripping off and removing clearing on completion of work as per design and drawing approved by the Engineer-in-charge. For Bridges

Painting on concrete surface Providing and applying 2 coats of water based cement paint to unplastered concrete surface after cleaning the surface of dirt, dust, oil, grease, efflorescence and applying paint @ of 1 litre for 2 sqm (Reference to MORT&H's specification 800). For Bridges

Supplying & fixing of Hazard Markers of size : 30cm X 90 cm as per IRC :79-1981 ( The above is inclusive of vertical post) For Bridges

CHATTERJEE CONSTRUCTION (BID ID -3227806)

BLACK DOWN CO-OPERATIVE LABOUR CONTRACT AND CONSTRUCTION SOCIETY LTD (BID ID -3223937)