Water is the single most critical factor in the life of a highway. Water that penetrates the road body and pavement layers reduces bearing capacity and, together with freeze-thaw cycles, causes cracking, settlement and deterioration of the surfacing.
Works we carry out
- Surface drainage: ditches, channels, gutters and gully inlets
- Deep drainage: filter-material drainage trenches and drainage pipes
- Stormwater lines and inspection chambers
- Sub-pavement drainage layer
- Cut-off drainage behind slopes and cuttings
Drainage is among the least visible and most decisive items of road construction; it has a direct effect on maintenance cost during operation.
