Design of Tall Timber Buildings in Scandinavia and Canada – A Comparison Study
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Typ
Examensarbete för masterexamen
Program
Structural engineering and building technology (MPSEB), MSc
Publicerad
2022
Författare
Olsson, Oskar
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Scandinavia and Canada are two places with many forests and benefit from the
sustainable change where timber is becoming more and more relevant, even when
designing tall buildings where steel and concrete have been and still are the dominant
material to use. This thesis compares the building and design practices for tall timber
buildings in Scandinavia and Canada. This will be done in three parts. Firstly will be a
literature study to understand the main design criteria for designing tall timber buildings
and how it differs between the two places. Secondly, a questionnaire where experts in
Scandinavia and Canada are asked about their thoughts on the design process of tall
timber buildings. Lastly, two models will be created using the program ANSYS, one
representing Mjøstårnet and one representing Brock Commons. These models will be
analyzed to understand better how a timber design from Scandinavia differs from one
in Canada, especially regarding the seismic load, which is not considered in
Scandinavia. The results from these parts are that the design process for tall timber
buildings is similar in Scandinavia and Canada but with some differences, especially
regarding fire design, where Canada is more conservative than Scandinavia, and
seismic design, which is not considered in Scandinavia. The computer models show
that having a hybrid solution like Brock Commons creates a better design than the all
timber solution found in Mjøstårnet and how the lateral load like wind and seismic
becomes an obstacle for tall timber buildings. Therefore, a hybrid solution is an
excellent solution to make the design easier to comply with codes and regulations. Some
results indicate that having a total timber solution like Mjøstårnet could be a possible
seismic design for a tall timber building, but it would need to have a different shape
than Mjøstårnet
Beskrivning
Ämne/nyckelord
Timber engineering, structural systems, tall timber buildings, fire design, seismic design, frequency analysis