With this approx. 17 meters underground spiral  car park system the vehicles are placed into an entry box and carried by an automatic transport system (tender) to a free parking bay. The load promoter with the cars moves in similarity to a nut/mother when untwisting and turns the vehicle off, where straight place is. With the lightweight tender with four arms, it is possible to park four cars in and out at the same time.

• Static loads
•     Dead weight of base plate and steel girder
•     Vehicle mass of tender
• Dynamic loads
•     Wind loads
•     Earthquakes

Lightweight construction tender, finite element mesh with displacement boundary conditions and outside loads

Lightweight construction tender displacements in vertical direction [mm]

- Application of the finite element method as numeric procedure for the computation of
  the material and structure demand due to the working loads 

- Consideration of different lightweight construction materials

- Examination of failure-relevant deformations and stresses

- Parameter studies for the optimal organization of local and global structural ranges