GENERAL- Rehabilitation of Kuriyappilly bridge bridge in North Paravur Constituency in Ernakulam District- Bridge Safety- Rehabilitation of Kuriyappilly bridge -General Civil Work

OD267730/2025-2026:Providing and fixing double scaffolding system (cup lock type) on the exterior side, upto seven story hight made with 40 mm dia. M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staricase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required location with essential safety features for the workmen etc. complete as per directions and approval of Engineer- in Charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective of duration of scaffolding. Note:- This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done .

OD267726/2025-2026:Drilling holes through the slab and beam for anchoring steel bars.

16.9: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.

OD267728/2025-2026:Guniting concrete surface with cement mortar applied with compressor after clearing surface and spraying with epoxy complete as per technical specification

OD267727/2025-2026:Encasing the deteriorated surface with micro concrete so as to get a uniform size. Applying epoxy bonding agent on the existing concrete surface so as to get a well bonding with a surface . The rate shall include the cost of material labour charge , hire charges of generator .All complete as per manufactures specification and as per the instruction of engineer in charge

2.4.4.B: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 Dismantling Stone Masonry - Rubble stone masonry in cement mortar.

OD267729/2025-2026:Random rubble masonry using departmental rubble in foundation and plinth including through and bond stone and levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate with cement concrete 1:6:12 (1 cement : 6 coarse sand :12 graded stone aggregate 20mm nominal size) upto plinth level with cement mortar 1:6 (1cement : 6course sand) 12 graded stone aggregate 20 mm nominal size) upto plinth level with Cement mortar 1:6 (1 cement : 6 coarse sand).

14.2:Supplying, fitting and placing HYSD bar reinforcement in super-structure complete as per drawing and technical specifications

13.5.E.P.1:Plain/Reinforced cement concrete in sub-structure complete as per drawing and Technical Specifications RCC Grade M20 - Using concrete Mixer - Height upto 5m