Lilla Bommen (building)

[1] The waterways of the area which link to the Kattegat Strait, the North Sea and the Atlantic, which historically formed Gothenburg into a significant shipping centre as Sweden’s principal seaport.

[5] Furthermore, additional difficulties arose in the design and construction process due to the unstable foundation and location of the structure placed alongside waterways.

The use of piling construction was a prominent feature of the new project that was used to support the heavy loads to overcome the issues regarding inundation and ground settlement of the waterfront location.

[5] The construction of multi-laned thoroughfare is still present in the urban-planning of Gothenburg, with a major infrastructural focal point upon an enclosed ring road around the city square.

At the centre point of this city square was the statue Poseidon by Carl Milles, which was surrounded by major residential and commercial areas including museums, theatres and the Nord Stad Parking structure.

Further discussed within Robert Trancik’s case study in his text “Finding Lost Space”, is the infill construction that restored the large area of which the Lillla Bommen building presides today.

The prior highway interchange that predominated the large area that new infrastructure at the waterfront of the Göta Canal was remodelled to accommodate the reclamation of unused “Lost space” as referred to by Transik.

The building’s height was intended to improve harmonization with both the waterfront nature of the property, as well as existing skyscrapers in the area, including but not limited to the Gasklockan, and Hotell Gothia.

[6] This was also emphasised within Arkitektur, a prominent architectural magazine in Sweden, which Meel also discusses, where the Swedish disdain for multi-storey buildings is mentioned.

The pre-existing area composed largely of clay sediment would cause implications for the stability of a building with the proposed load imposed by the high-rise.

The ground upon which the Lilla Bommen was constructed, composed of a clay sediment with a depth of 100m, was expected to shift at a rate 10-20 cm every 100 years.

[4] These covers implemented in the Lilla Bommen designed to be two metres thick and claimed to have used concrete in volume sufficient to have filled four Olympic sized swimming pools according to Skanska.

[4] The concrete covers both act as the stable surface for which construction can be based on, as well as also serving to protect piles beneath from corrosion and weathering damage.

The Statue Poseidon by Carl Milles
The Järntorget in Gothenburg (1982)
Ralph Erskine, principal architect for the Lilla Bommen Building
The Gasklockan in Gothenburg, Sweden
Cover from the Arkitektur magazine
The use of pile construction is common near waterfront locations, such as application in dams. This involves the driving of long "piles" into sediment or clay to stabilise the foundation of structures
Spalling of concrete causes splitting from steel reinforcement