When it is needed
For recurring flooding, pavement edge deterioration or disputes following site improvement works.
What we examine
- Channels and drainage inlets
- Ditches and outlets
- Pavement gradients
Materials to prepare
- Plans and elevations
- Drainage layout
- Maintenance records
- Photographs during rainfall
Sample questions
- How is drainage arranged in the accessible area?
- Are there defects or runoff obstructions?
- Are elevations consistent with the design solutions supplied?
- What circumstances may explain water accumulation?
- What data are insufficient for checking capacity?
How the work is carried out
- Examining the layout and events
- Inspection and geometric measurements
- Analysis of runoff directions
Result
A report describing identified deficiencies and giving technical reasons for further checks or remedies.
What affects the conclusions
Visual inspection in dry weather does not reproduce the entire heavy-rainfall regime.
Frequently asked questions
Is a visit during rain necessary?
Sometimes it is useful. The feasibility and safety of such observation are agreed separately.
Can adjacent land be assessed?
Yes, if it affects the catchment and access is agreed.