Concrete Structure Investigations Ltd (CSI Ltd) assess, evaluate and report to Professional Consulting Engineers, Building Owners, Infrastructure Agents and Managers, Councils and Government Institutions on areas of existing reinforcement concrete structures. CSI Ltd can determine reinforcing bar size, cover and location of the steel within concrete structures. Other diagnostic testing includes: pile integrity tests, concrete core sampling and reinforcing yield strength tests, void detection within concrete, carbonation and chloride ion contamination of concrete and rebar corrosion determination surveys and control.