GENERAL-Bridge safety work 2025-26 - Various Bridges-Urgent Repairs of various bridges under bridge section Tripunithura- General Civil Work

Bridge Safety work

12.1.2.A: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. Ordinary Rock (not requiring blasting ) - Depth up to 3 m - Manual Means

12.4:Plain cement concrete 1:3:6 nominal mix in foundation with crushed stone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days.

12.8.1.C:Plain/Reinforced Cement Concrete in Open Foundation complete as per Drawing and Technical Specifications RCC Grade M20 - Using Concrete Mixer - (Without formwork)

12.8.1.C.1:Plain/Reinforced Cement Concrete in Open Foundation complete as per Drawing and Technical Specifications RCC Grade M20 - Using Concrete Mixer

12.40:Supply, Fitting and Placing un- coated HYSD bar Reinforcement in Foundation complete as per Drawing and Technical Specifications

OD70363/2025-2026:Cleaning the expansion joint properly with a wire brush and coir brush, fitting aluminum strips dura rod on the joints at 10cm interval for holding the hose, providing polysulphide sealant for expansion joint.etc. complete for expansion joints of the bridge.

OD70364/2025-2026:Encasing the expansion joint sides with micro concrete . Applying epoxy bonding agent on the existing concrete surface so as to get a well bonding with the new substract. Curing compound shall be applied immediately after setting the concrete. The rate shall include the cost of material, labour charges, hire charges of mixer machine. All complete as per manufactures specification and as per the instruction of engineer in charge.

OD70367/2025-2026:Demolishing stone rubble masonry manually / by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer -in- Charges:In cement mortar

12.7.B:Random Rubble Masonry (coursed/uncoursed ) Work in Cement Mortar 1:3 in Foundation complete as per Drawing and Technical Specifications.

16.8:Applying epoxy mortar over leached, honey combed and spalled concrete surface and exposed steel reinforcement complete as per Technical Specification

OD70593/2025-2026:Engaging man mazdoor for clearing silt from the deck slab of bridge, vegetation growth in sub structure, handrails, traffic control, pot hole filling for ready mixed bituminous compound etc, complete

4.12:Providing, laying, spreading and compacting graded stone aggregate to Wet Mix Macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.

OD213890/2025-2026:filling up pot holes (cut and formed to regular shapes and all loose and defective materials removed) using ready mixed bituminous compound (bag of 25 kg)an dafter supplying a tack coat of bitumen emulsion(RS) and compacting with surface vibrator to get a compact surface

10.5.1b:Removal of all failed material, trimming of completed excavation to provide firm vertical faces, cleaning of surface, painting of tack coat on the sides and base of excavation as per clause 503, back filling the pot holes with hot bituminous material as per clause 504, compacting trimming and finishing the surface to from a smooth continuous surface, all as per clause 3004. 2 Filling Port holes and Patch Repairs with Bituminous concrete <br> For grading II- 13 mm (Nominal size) Material