Post Tower is the headquarters of the logistic company

Deutsche Post DHL The Deutsche Post AG, operating under the trade name Deutsche Post DHL Group, is a German multinational package delivery and supply chain management company headquartered in Bonn, Germany. It is one of the world's largest courier companies. T ...

with the two brands postal services for Germany ''Deutsche Post'' and the worldwide logistics company DHL. The Post Tower is a 162.5-metre, 41-storey office building in

Bonn The federal city of Bonn ( lat, Bonna) is a city on the banks of the Rhine in the German state of North Rhine-Westphalia, with a population of over 300,000. About south-southeast of Cologne, Bonn is in the southernmost part of the Rhine-Ru ...

, Germany. It was designed by German-American architect

Helmut Jahn Helmut Jahn (January 4, 1940 – May 8, 2021) was a German-American architect, known for projects such as the Sony Center on Potsdamer Platz in Berlin, Germany; the Messeturm in Frankfurt, Germany; the Thompson Center in Chicago; One Liber ...

and won the 2002 Silver

Emporis Skyscraper Award The Emporis Skyscraper Award was an award for architectural excellence regarding the design of buildings and their functionality. The award was presented annually by Emporis, a real estate data mining company with headquarters in Hamburg, Germany ...

. It is the fourteenth tallest skyscraper in Germany, and the tallest in Germany outside of

Frankfurt am Main Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...

Building details

The building is located at the river

Rhine ), Surselva, Graubünden, Switzerland , source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden, Switzerland , source2_coordinates= , so ...

and in the center of the old parliament area of Bonn near the '' Deutsche Welle'' and has about 55,000 m² office surface. Construction phase was May 2000 to December 2002, 80,000 m³ of concrete and 16,000 tons of structural steel were used in the building shell. The building dimensions are; height: 162.5 m, width: 41.0 m, length: 81.1 m (with ring walls 86.55 m), weight: 300,000 t. The building has the ground floor, 40 upper floors and 5 underground levels. The Tower has a surface area of 7,000 m². The Tower is constructed as a steel-glass-building. The base of the Post Tower has the shape of two staggered

semi-ellipse In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. It generalizes a circle, which is the special type of ellipse in ...

s of two shifted circle segments. Most office walls, doors and the floors of skygardens and elevators are therefore made of 93,000 m² glass used.

Climate control concept

A double skin glass façade with about 1.2 m cavity between the external skin and the primary façade, provides natural ventilation regulated by

venetian blind A window blind is a type of window covering. There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard mate ...

s. The north-facing windows at the front are smooth, the glass windows on the south-facing façade are gently sloping to allow a better flow of air (see picture). Via a decentralized underground convector, the external air is sucked in from the space between the façades, then it is conditioned and fed back into the offices. The air also reaches internal areas of the building through doors and corridors. The office air is filtered into the Sky Gardens, warms up those areas and then is filtered back outside via façade flaps on the east and west sides of the Sky Gardens. The double skin façade enables huge energy savings. The benefits gained by the Post Tower in using up to 130 liters of groundwater per second to heat and cool the concrete core. The remaining energy requirement is covered by connection to the district heating system, refrigerating equipment and

heat pump A heat pump is a device that can heat a building (or part of a building) by transferring thermal energy from the outside using a refrigeration cycle. Many heat pumps can also operate in the opposite direction, cooling the building by removing ...

References

{{Authority control Deutsche Post Buildings and structures in Bonn 2002 establishments in Germany Skyscraper office buildings in Germany Helmut Jahn buildings Office buildings completed in 2002