Water is a major risk to roads and yards. Standing water and saturated weak bases increase deformation, frost damage and repeat repairs.
Surface and underground solutions
The system depends on topography, paved area, soil and the available discharge point.
- longitudinal and cross falls
- channels and inlets
- pipes, chambers and connections
- ditches, culverts and protected outlets
Construction sequence
Network levels must be fixed before aggregate bases and kerbs. Pipe gradients, connections, chambers and backfill compaction are checked before surfaces close the work.
- existing-utility review
- trench and pipe bedding
- installation, survey and backfill
- final chamber and surface adjustment
Design information
Provide a site plan, paved area, levels, possible discharge point and use. Pipe sizing and the engineering solution follow the design and calculation.