The entire complex is a low-energy building made of glass with krypton-filled panes.
Glass atriums form aesthetic and communicative links between the
office complexes.

The architect responsible for this, Ulrich Jaschek, an enthusiastic sailor, wanted to round out the innovative building with innovative as well as functional sun protection and commissioned Reckmann to develop a special and innovative shading system for
the atriums. We designed external and self-supporting large surface shading with fully automated hydraulic controls.

Four easily modified RF90-4 reefing drives per atrium roll up a total of six sails. The basic idea was to break away from traditional right-angle surface shading and instead to develop a "simple" effective design. The sail shape is considered to be ideal here.

Sailmaterial

The guidelines were to satisfy energy requirements, UV resistance and the tensile strength of real sails. The material is a colour-coated, lattice weave of high-tensile polyester. Up to 97 percent of the warmth contained in the sunshine is reflected. Microbe aeration with fine pores and openings serve to additionally absorb and dissipate the undesired thermal radiation.

Undesirable malformations are kept within strict limits and the surface stability is particularly high. The track layout of the shade sail up to 120 square metres in length is designed to be load-oriented and in this manner also further provides for the increased stability of form.

Control

The sheets are fed below the floor in front of the façade in each case into an aluminium box with hydraulic cylinders and a pulley system.

Drive

Sensors sense warmth, wind strength and direction and hence set in motion the "open" and "close" of the sun sail. Depending on wind strength "the opening of the sail" permits continuous reduction and partial shading of the façade even in higher wind strengths.