Details: item no.1 :- providing and constructing longitudinal and cross graded filter drains usings and and 20 mm down coarse approved clean, hard, graded aggregates satisfying specified filter criteria in layers of specified thickness including cost of all materials, machinery, labour, laying to required slopes, compaction etc., complete as per specifications and approved drawings with lead up to 1 km and all lifts as directed.
Sector: Irrigation