Macintosh House

The project involved design of temporary propping to allow formation of a new two storey basement beneath the previously demolished Macintosh House which was a 1960’s RC frame building. The basement perimeter was constructed using steel sheet piling (silent system), which was retained by the propping system designed by L+C that allowed excavation to be carried out in sequence and which comprised sacrificial steel stubs that were built-in the new permanent RC walls.

In addition to basement propping, deep underpinning was carried out beneath the pavement vaults, and new openings between vaults which were value engineered as per design proposal by L+C in terms of  permanent solution.