TSL was employed to install 2 number steel casings 55 metres long underneath live railway lines, after supplying stress settlement calculations to the client it was decided the steel casing would be installed 2 metres apart, the steel casing were successfully installed to line and grade.
The casings were then slip-lined with DN225 clay drainage pipes once this stage of the operation was completed both lines were grouted up, all works were completed in eight days.