The construction of such a deep parking garage in an inner-city environment was a huge challenge both logistically and technically. The center of Leiden is a car-free zone full of historic architecture. Therefore, building here required extra attention to the environment.
The garage is also built on a square where the annual October fair “Leidens Ontzet” is organized. Therefore, the garage must be able to carry the very heavy load of fairground visitors and attractions each year. Alongside the shape of the garage, this also posed a technical challenge.
To limit the nuisance, various environmentally friendly construction techniques were used, such as low vibration pressing of sheet piling, and the application of concrete diaphragm walls 30 meters deep.