Underground car parks are a solution to limited parking space in highly urbanized areas. However, underground construction has numerous design and construction issues that normal structures above ground level do not have. That is why building underground is so costly and only considered when all other options are exhausted.

ArcelorMittal is changing the economics of conventional underground construction by utilizing steel sheet piling as the permanent foundation wall. This innovative use of sheet piles eliminates the need to construct a permanent wall within a shored excavation, thereby greatly reducing the construction schedule. The reduced schedule equates to significant project savings and a greater return on investment.