The Prangl Company called upon architects to provide design proposals as part of a competition for their new headquarter in Vienna. Prangl's main activities are hiring out mobile cranes and work platforms and providing transport and heavy haulage solutions. The design proposal places the administration in the middle of the site. Like a tree, the building branches into three office wings in all directions. This configuration maximizes the views over the complex for the administration. The central “trunk” provides the main circulation and acts as a meeting area for the different departments.