The lifting units are attached to cross beams that are supported on supports of the pit wall. The system thus “hangs” in the pit and does not stand on the ground.
This type of construction is often chosen for new buildings because it is much easier to concrete wall projections within the required tolerances than the floor area. And if something does go wrong with the supports, the support area can be leveled by simply placing steel plates underneath.

Suspended underfloor systems also score points for better serviceability, as drive and wear parts are much easier to access.