GENERAL-Bridge Safety-Ordinary repair of Thundathumkadavu-Edampadam Bridge and Varapuzha Market Bridge in Paravur Constituency-Bridge Safety-General Civil Work

OD63178/2025-2026: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 .

OD63176/2025-2026:Drilling holes through the slab beam and well 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.

OD63175/2025-2026:Guniting concrete surface with cement mortar applied with compressor after clearing surface and spraying with epoxy complete as per technical specification

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

16.11:Eproxy bonding of new concrete to old concrete

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

OD68164/2025-2026:OD66400/2025-2026 Encasing the deteriorated wells in underwater with Renderoc UW so as to get a uniform size . Applying epoxy bonding agent on the existing concrete surface so as to get well bonding with new surface.Chipping and removing old spalling/defective concrete and exposing the defective/corroded reinforcement of the ceiling , join the additional bar wherever1/3 diameter of the bar is corroded. Removal of the defective concrete across the bar should be at least 2mm beyond the defective bar so that the reinforcing bar can be cleaned with emery ribbon, wire brush etc. After cleaning the bar wash the bar with clean water and collect all spalled/fallen concrete. Measurement is calculated for whole calculated whole exposed area. Including cost of materials, labour charges, conveyance of materials to site hire charges of tools and form work for pile etc complete. All complete as per manufactures specification and as per the instruction of engineer in charge.

OD70533/2025-2026:Encasing the deteriorated surface with micro concrete so has to get a uniform size. Applying epoxy bonding agent on the existing concrete surface so as to get a well bonding with the new surface. The rate shall include the cost of material, labour charges of generator. All complete as per manufacture specification and as per the instruction of Engineer in Charge,including shuttering.