Page 84 - Designing Ways 267

The 26-metre high atrium is covered by a transparent
ETFE foil roof carried by a wooden-truss construction.

Natural wood is everywhere in the interior and office
The four main pillars of the buildings' energy supply are sufficiency, spaces and makes an important contribution to a last-
ingly healthy indoors climate for users.
efficiency, combined heat and power, and load management. In the
process, conditions were created to sensitise users to a conscious,
efficient use of energy. The office spaces are air-conditioned by
suspended smart ceilings. A sufficient amount of daylight in the
offices minimises the need for artificial lighting.

The two buildings in the office complex share a basement garage,
with 218 e-mobility spaces for tenants. The bicycle room contains
approximately 100 bicycle places, including for e-bikes; there are 32
additional spaces in outside areas.

The office areas, as well as the associated ancillary and circulation areas,
are barrier-free, and all outdoor areas are also designed to be accessible.

The façades
The façades have a regular grid consisting of weather-resistant glass-
fibre concrete panels. The grid is articulated by horizontal strips
and coloured vertical panels. Pylons structure the façades vertically.
Glass-fibre pilasters visually reinforce the socle section. The rhythmic
façades have a restrained colour scheme which has been chosen
individually for each of the two buildings. Two different shades
were selected for each façade. In the case of the Carré, the colours
are Sahara sand for the horizontal strips, and terracotta for the
vertical structures. The reveals are visually set apart by their silver-
grey colour. The Solitaire has corresponding colours: Sahara sand for
horizontal elements, and silver-grey for vertical elements. The two
buildings enter into direct dialogue with one another through their
colours and dimensions.

The sustainable façade elements of the two buildings weigh only 30
kg per m², and are also recyclable. In addition, the façade absorbs
CO2 from the air due to the thinly ground cement top layer, thus
giving it a decarbonising effect.

84 Issue 267 • dw