Rehabilitation work of Malikkadave bridge in North LAC in Kozhikode District maintenance work

2.3.1.A:Clearing and grubbing road land including uprooting rank vegetation, grass, bushes, shrubs, saplings and trees girth up to 300 mm, removal of stumps of trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, up to a lead of 1000 metres including removal and disposal of top organic soil not exceeding 150 mm in thickness In area of light jungle - By Manual Means

2.1.3:Cutting of trees, including cutting of trunks, branches and removal of stumps, roots, stacking of serviceable material with all lifts and up to a lead of 1000 metres and earth filling in the depression/pit. Girth from 900 mm to 1800 mm

OD205100/2025-2026:Data derived from DAR Civil 50.2.33.5 - Cutting branches of trees overhanging above any structures of girth between 40cm to 60cm including stacking of serviceable materials and disposal of unserviceable material, cost of labour, hire charges of rope and pully etc without making any damages to nearby structures etc complete. support frame by bolting/riveting including all labour and material.

OD205104/2025-2026:Data derived from DAR Civil 50.2.33.6 - Cutting branches of trees overhanging above any structures of girth between 60cm to 90cm including stacking of serviceable materials and disposal of unserviceable material, cost of labour, hire charges of rope and pully etc without making any damages to nearby structures etc complete

OD205106/2025-2026:Removing damaged concrete: Loose and delaminated concrete shall be identified and marked before proceeding with the removal. The loose cover concrete including the loose damaged concrete shall be removed upto beyond the corroded bars to a minimum depth of 10 mm behind the reinforcement. Only affected concrete shall be removed and conducting proper investigation, (Good & sound concrete should not be chipped / damaged) by chipping / hacking with chisel and hammer or by mechanical means like light weight chisel hammer, pneumatic chippers, making saw cut at periphery to avoid feather edge for all height and removal and disposal of debris at designated location including all material, labour, tools, temporary supports for structures, electricity, plant and machineries etc. complete as directed by Engineer-in-charge and/or Consultant. Depth of chipping may vary from 20 to 100 mm.

OD205102/2025-2026:Cleaning the utility ducts,bearing premises over pier cap etc., by engaging labour. The item include all labour and machineries & equipments like.

OD205108/2025-2026:Rust remover/Rust Convertor: Cleaning of rust / scales / corrosion from reinforcement bars should be carried out using acid based rust remover, Reebakleens RR of Fosroc or equivalent, or using alkali based rust converters such as Feovert of Krishna Conchem. The material is to be applied to the rusted metal bar, using brush and leaving it to dry for 30 Min. & washing surface with fresh water as required to exposed reinforcement bar at all heights, including all material, labour, tools, temporary supports for structures, electricity, plant and machineries complete as per detail specification and as directed by Engineer-in-charge and/or Consultant. The concrete surface area containing the cleaned rebars shall be measured for payment.

OD205101/2025-2026:Anti Corrosive treatment to Steel: Providing & applying inhibition coats/system to exposed reinforcement bars & also new bars,after cleaning & removing scales and rust completely as specified in 1.4, Two component inhibitor Nitozinc Primer std. of Fosroc or MasterEmaco P130 of BASF or equivalent having specific gravity of 1.75 and solid content 57(+/-3) Adhesive bond strength > 1.5 N/mm2, 40 microns DFT per coat as approved by Engineer-in-charge and/or Consultant shall be used as per manufacturer?s specification in two coats at all heights, including all material, labour, tools, temporary supports for structures, electricity, plant and machineries, necessary surface preparation and necessary protection after and during work. The concrete surface area contianing the rebars where the treatment is carried out shall be considered for measurement.Data as per approved data of Rehabilitation of Kalluthankadvu bridge.

OD205110/2025-2026:Polymer Modified Mortar (Pre -Packed):Providing and Applying single component,High strength,Fiber reinforced,thixotropic cementitous patch repair moratar that achieve compressive strengthminimum 15 Mpa at 1 day and 45Mpa at 28 days and capable of applaying up to 50mm thick in single layer such as rendroc SP40 of fosroc or Master Emaco S348 of Basf or equilent to the prepared concrete area for thickness up to 50mm after applying apoxy resin based bonding coat as per manufacture 's specification befor the bonding agent become tack free ,initially by hand and finaly finishing the same with trowel care fully compacting the same around the rebar and finishing to bring it in line with existing concrete surface on the columns ,slab,beam etc,at all heights ,where the thickness of application is less than 50mm in patches as per specification .Item rate is inclusive of all materials including the bond coat , labour , tools ,temperory supports for structures, electricity,Plant and machineries,curing etc.Complete and directed by Engineer in charge and/or consultant .(Payment to be made in square meter for thickness up to 50mm of PMM for patch area repaired)