A large yet delicate roof spans a trapezoidal public square at the headquarters of Ernst&Young since 2015. It was designed by schlaich bergermann partner and Sauerbruch Hutton. The structure comprises a two-way spanned dome-like steel grid over a diamond-shaped footprint. It features suspension cables and a roof cladding of flat quadrangular glass panes. All four sides of the roof intersect with tilted glass panes, so that the eaves are continuously horizontal. They run in line with the height of the eaves on the wing buildings.
In the article linked below the basic conditions and approach to the project are explained in more detail.