Tripla creates a new and lively centre for Helsinki in Keski-Pasila. The three Tripla blocks, each one hectare in size, create one immense, multi-purpose construction project that creates a unifying bridge in the city landscape between eastern Pasila and western Pasila. Tripla will be completed in stages during 2019–2022. A shopping centre, parking facility, public transport station, 400 housing units, hotels and offices will offer employment for 5,000 people. Central Pasila is one the focal development projects in Helsinki in the coming years.
The Tripla station, commercial and office block
183,000 m2, of which 61,000 m2 in the sation block
Sweco is in charge of the principal design and structural engineering for the eastern third of Tripla, the station block, as well as any solutions in terms of city landscape for the entire project with Arkkitehdit Soini & Horto Oy. Sweco is also responsible for the extremely challenging structural design of the station block.
The City of Helsinki held a Pasila centre block design and implementation competition. The winning proposal was created by YIT Rakennus Oy, whose architects were the famous Dutch office OMA or Office for Metropolitan Architecture, as well as the Finnish office Arkkitehtitoimisto Soini & Horto. YIT selected Arkkitehdit Soini & Horto Oy and Sweco Architects to continue the design during the building permit and implementation phases.
TRADITIONAL, MODERN AND NEW ARCHITECTURE
The different scale of the areas surrounding the centre of Pasila forces Tripla to take a stand on its environment through architectural modelling. Tripla adapts to the block scale of eastern Pasila and western Pasila and binds the two districts together by rising above the dominating rooftop height and creating a focal point to structure the area. The architectural modelling also considers the scale of the future southern tower area by linking the adjacent block structures to the tower area – whilst not trying to compete with the towers to be built on the southern side of Tripla.
A structure based on modularity and blocks based on squares are a part of the traditional way of building in Helsinki, starting with Engel. In Tripla, this can be seen in the facility solutions as well as the façades that enact the code so typical of Helsinki, the language of architecture.
Modern materials and the treatment of traditional façade motifs are what makes Tripla novel. It is an example of implementing the traditional city space thinking in Helsinki in the 2010s. This results in a timeless environment that does not attempt to seize its place through fashionable design, but commits to continuing the expansion of the Helsinki downtown area to Pasila. This also creates a new, versatile backdrop for urban life in Helsinki.
Tripla has especially extensive and carefully designed public city spaces that form a stunning series of spaces both indoors and outdoors. In the station block, the users of these series of spaces and the largest passenger streams in the country meet and meld with each other. A key aspect of Tripla’s architecture involves an operation on several different scales, so that interesting aspects and dimensions are revealed in all situations and at all distances. The metropolitan scale and visually reserved façades create a flexible frame and background for the changing flow of functions, events and human-sized locations. Up close, the detail and material solutions reveal fresh insights and even surprises.
THE BUSIEST RAILWAY STATION IN FINLAND IS ALSO A COMMERCIAL BUILDING AND OFFICE BUILDING
The concept of accessibility is given a new meaning in the Tripla station. Its location at the intersection of the new Kehärata with a connection to the airport, the western additional railway, the renewable Veturitie and Teollisuuskatu and, possibly in the future, the City Rail Loop make Tripla unique on a national scale. Pasila will be the busiest railway station in Finland. In 2025, 130,000 passengers and 900 trains will travel through the station daily. In addition to the actual station, two office towers and plenty of commercial space will be located in the station block.
The special challenges with designing and building the station block are the strict zero tolerance for any logistic disruptions in passenger traffic, as well as the unusual location in terms of building technology above high voltage track cables that are live almost 24 hours a day. The old station in Pasila is practically demolished and a new station, shopping centre and office building are constructed in its place, without any disturbances to the flow of passengers and the feeder transport of private cars, trams and busses.
Friendliness towards the environment and energy efficiency are both the starting point of Tripla’s design, as well as its goal. In addition to solutions in this vein, existing infrastructure is being utilised as comprehensively as possible.
Energy efficiency is good for the environment, but also results in significant savings in costs. We are designing the station block so that it will surpass the requirements of the highest environmental classification, LEED Platinum.