Nine steps to concrete wisdom

This paper presents the results of a detailed 3D investigation of 9 structural tests pits (called cells) at our offices in Australia. The data were recorded using a GSSI SIR-3000 svstem coupled with a 2.6 GHz antenna, with 1024 samples per trace and 500 scans per metre. A range of 5 - 6 ns and 16 bit data were used throughout.