Focused Investigation

Focussed Investigations are tailored to resolve specific issues and problems identified during the first level inspections. Different techniques or a combination of techniques can be used to address different kinds of problems.

AndrewsInfrastructure has developed techniques to enable safe confined space entries such as 200 to 300 m sewer penetrations. We have extensive experience in concrete lined tunnels and have a good working knowledge of the various construction models used. The following types of Focussed

Investigations have been carried out:

• Precise internal distortion measurements and fracture analysis
• In-situ concrete testing
• Concrete coring
• Structural analysis including detailed stress assessment
• H2S gas monitoring, pH testing, and corrosion sampling
• Hydraulic analysis