An intrusive site investigation is undertaken to further investigate the potential problems identified in the desk study and investigation areas are often targeted by WILGEO Ltd at specific potential problem areas rather than a regular grid to maximise benefit at minimum cost.
The results of a study by TRL on behalf of the National Audit Office (NAO) into the cost benefit of site investigation on highway construction costs is shown below. Our Director, Phil Wilson provided briefing on the report for an appearance by Senior Officials at a Public Accounts Committee (PAC) hearing on highway construction costs.
Managing Geotechnical Risk
Site Investigation Expenditure
