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Building Information Modeling/ Virtual Design & Construction
The new Hammarby Sjöstad district located in southern Stockholm has expanded in recent years. When construction of the area is fully completed in 2017, the district will be able to accommodate slightly more than 30,000 residents. Developing a new district is an enormous undertaking and many players have been involved, including Skanska. One of our projects in the area is Sjöstadsporten, which with its angled sides and stylish architecture offers exciting premises and attractive apartments.
Skanska created and developed the combined residential and office project in 2007. The project comprised three parts – a residential property with 84 apartments, a 12-story office property spanning 6,000 square meters and a shorter office property comprising 7,500 square meters.
The office buildings are strategically located near the Södra Länken motorway and Hammarby Fabriksväg, while the residential property is situated behind the office premises, near a calmer part of the district. Combined with a nearby hotel, the taller of the two office buildings serves as a gateway to Hammarby Sjöstad from the east, known as Sjöstadsporten. The location of the office properties was carefully selected to enable to buildings to serve as a barrier against the heavily trafficked motorway and protect the residential property from the environmental and safety risks arising from the nearby traffic.
Skanska served as the general contractor for the project, which meant that the company was responsible for all aspects of the project – planning, materials, construction and subcontractors. Since the assignment comprised three projects to be completed at the same time, logistics presented the main challenge during the construction process. At most, some 200 people worked at the site and building cranes, material transportation and foundation machinery were crowded into the limited space. Structured coordination was thus of the utmost importance.
The Hammarby Sjöstad district is characterized by sustainability and concern for the environment. Accordingly, considerable focus was placed on choosing climate-smart building materials, energy and other use of resources during the construction of Sjöstadsporten. Skanska built one of Stockholm’s largest solar power facilities on the roof of the shorter office building.
The client for the residential project and 12-story building was Familjebostäder and the client for the shorter office property was Areim.
Fredrik André+46 10 44 80 138
Mejl Fredrik André
Verksamhetsgren: Commercial development
Sjöstadsporten is situated in Hammarby Sjöstad, which is known for its green profile. In Hammarby Sjöstad, the goal with respect to environmental impact is to be twice as good as other areas built in Stockholm in the early 1990s.
During construction of Sjöstadsporten, considerable emphasis was placed on the selection of construction materials and use of resources. We also based our work on Skanska’s Green Workplace certification system, which meant that we imposed strict environmental requirements during both the production and construction phases.
We constructed one of Stockholm’s largest solar power facilities on the roof of the shorter office building, which has the capacity to supply the property with up to 30 MWh of solar power. The shorter office building has been awarded GreenBuilding environmental certification. This means that the building’s energy consumption must be at least 25 percent shorter than the national standard.
Through successful business development, Skanska Residential Building Stockholm created Sjöstadsporten in Hammarby Sjöstad, south of Stockholm, to be acquired by two core customers. Thereafter, Skanska served as the general contractor for the properties.
The project included three properties – a residential property with 84 apartments, a 12-story office property spanning 6,000 square meters and a shorter office property comprising 7,500 square meters connected to the taller building. The land is owned by Skanska Properties and housed a parking lot prior to the start of the project.
The residential property and 12-story building were ordered by AB Familjebostäder and the shorter office property by Areim.
The project was unique in that it represented a major internal undertaking for Skanska. Various Skanska units were involved, including Skanska Foundation Projects, Skanska Civil Construction, Skanska Installation and Skanska Frame Systems.
Ground was broken and the intensive construction project commenced in March 2008. We encountered our first challenge during the foundation work. When we began piling, we discovered an entire underground floor from a previous property. However, we quickly solved this challenge with the assistance of the City of Stockholm by filling and reinforcing the hollow space.
Since the assignment comprised three projects, logistics were a key component of the construction process. At most, some 200 people worked at the site and building cranes, material transportation and foundation machinery were crowded into the limited space. However, through structured coordination, work continued without any disturbances.
The construction process, which continued for two years, was struck by two harsh winters with cold temperatures and extreme amounts of snow. This meant that the employees working at the site were sometimes forced to spend time shoveling snow rather than on construction work. The snow also resulted in poor accessibility. Nevertheless, the schedule for the project was maintained.
The office building is divided into three connected units covering seven floors and a taller building spanning 12 floors and is strategically located near the heavily trafficked Södra Länken motorway and Hammarby Allé. Thanks to its location, the office building serves as a sound barrier against the busy motorway and protects the residential property from the environmental and safety risks associated with the nearby traffic. To further improve safety in the event of an accident on Södra Länken, reinforcements were built into the façade of the office building.
The residential property was built using a VST framing system with a very high level of density, which provides a favorable energy performance and comfortable indoor climate. The property comprises two connected building bodies with eight stories facing the street. The balconies and inner courtyard of the residences face the back of the office building, which contributed to our decision to reduce the depth of the top two stories of the office building by six meters in order to allow more sunlight to reach the courtyard.