Special Repairs to Parambikulam Main Canal from L.S 10/700km to 10/800 km for the year 2026-2027

Clearing the Scrub jungle including removal of stumps, roots and destroying the same effectively as directed by the Departmental officers.

Dismantling stone masonry walls in cement mortar under 3m high clearing away and carefully stacking the materials in specified area useful for reuse for any thickness of structures specified including all leads and lifts etc,. complete complying with technical specification and as directed by the Departmental officers.

Dismantling plain cement concrete clearing away and carefully stacking the materials in specified area useful for reuse for any thickness of structures specified including all leads and lifts etc,. Complete complying with technical specification and as directed by the Departmental officers.

Gravel Backing for sides of erroded canal portion to prepare a uniform sub grade for lining including cost of gravel, conveyence with a lead of 5KMCT including loading unloading, stacking for pre measurements watering and consolidation etc,. Complete complying with technical specification and as directed by the Departmental officers.

Preparation of subgrade (as per technical specification) duly moisture and duly removing the surface irregularities including dewatering and manual laying Plain Cement Concretelining 75mm thick of M15 Grade concrete on canal bed using hard course aggregate with nominal maximum size of 20mm HBGS jelly to IS specified grading and mixing by mixer machine including dewatering by bailing/ pumping wherever necessary laying the concrete on canal bed/haunches/berms of canal manually , providing transverse contraction joint grooves as per technical specifications and water curing of the lining. The sub Grade shall be well prepared, dressed and rolled to true level and specified section to form a firm compacted base for the lining complete complying with standard specification and as directed by the departmental officers. (For canal lining works)

Refixing the existing cement concrete slabs of size 60x45x5cm making the surface of the sides of the canal suitable to receive the cement mortar bedding of 15mm thick in cement mortar 1:5 (One cement and five P sand) directly on the subgrade duly dressed and compacted full one day for water Curing of this bed layer and then laying of P.C.C.slabes with 6mm thick, cement mortar 1:3 (One cement and three P sand) with backing, brushing, wetting and fixing the precast cement concrete slabs in position inside slobes of the canal with templates by laying the slabs in position with cement mortar 1:2 (One cement and two P sand) to full thickness of slab simultaneous flush pointing with the same mortar finishing curing etc,. complete as per technical specificaion and as directed by the departmental officers.

Pointing with cement mortar 1:2 (one cement and two P sand) over the existing P.C.C Slab of size 60cm x 45cmx5 cm including racking out the joints finishing and curing etc, complete complying with technical specification and as directed by the departmentlal officers.

Random Rubble masonry in cement mortar 1:4 (One Cement and Four Sand) Using Old stones available at site for lining and including simultaneous pointing with the same mortar in the exposed surface and all incidental charges. Such as finishing curing etc,. complete complying with technical specification and as directed by the Departmental officers.

Random Rubble masonry in cement mortar 1:4 (One Cement and Four CS Sand ) Using New stones obtained from approved sources including bond stones wherever found necessary for lining / cross masonry structures and including simultaneous pointing with the same mortar in the exposed surface and all incidental charges.Such as finishing curing etc., complete complying with technical specification and as directed by the Departmental officers.

Plastering with cement mortar 1:4 (One cement and four P sand) 20mm thick over the R.R.Massonry including finishing and curing etc, complete complying with technical specification and as directed by the Departmental officers.