Purpose of survey
To verify whether the inventory information held on the drainage data management system (DDMS), previously derived from drawings, is a true record of the visible surface point assets.
What is a validation survey?
- A quick walkover survey
- Used to assess drainage data that has been derived from drawings, not previous field surveys
- Carried out in the daytime
Survey data round tripping
The drainage inventory information on the DDMS in the catchments to be surveyed will be round-tripped in accordance with the specific procedures and formats.
Reporting
A survey report will be created of the submission of the round-tripped DDMS survey data, including any original un-changed data and all the digital photographs taken during the survey
All of our surveys are compliant to National Highways documents CS551 and CD535.
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