PVIP-Rectification work to prevent Leakage through damaged bed and sidewall of Kottappady sub branch canal between ch 02/900Km and ch 3/100Km

Appendix A

4.1.8:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:4:8 (1 Cement : 4 coarse sand (zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources)

26.28.2:Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-In-Charge50mm average thickness

4.3.2:Centering and shuttering including strutting, propping etc. and removal of form work for:Retaining walls, return walls, (any thickness) including attached pilasters, buttresses, plinth and string courses fillets, kerbs and steps etc.

4.1.3:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:2:4 (cement : 2 coarse sand (zone-III)derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

50.2.25.1:Filling with contractor's own earth ( excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m as per direction of site Engineer-in-charge

50.13.1:9 mm cement plastering of mix : 1:3 (1 cement : 3 fine sand ) including all cost of materials, labour charges etc complete

2.28.1:Surface dressing of the ground including removing vegetation and in-equalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m.All kinds of soil

OD53578/2025-2026:Providing and fixing welded mesh of size 50 X 50 mm to be fixed firmly anchored to the concrete surface surface by means of nail and amp: proper tying or welding including the cost of materials and labour, tools and plants as approved by Engineer in charge . Details of cost for 10.00sqm. Materials- wire mesh 50X50 mm of size , 3mm wire,2.88kg/sqm

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