Timber and concrete hybrid superstructures - A potential step towards sustainability?
Paper in proceeding, 2021

Timber is a renewable material having a lower carbon-footprint than conventional concrete and steel. Hence, timber would be a good choice of material to minimize the carbon-footprint of a building. Superstructures of pure timber are, however, cumbersome to use for multistory purposes - timber is simply too light to stabilize the building properly. Hence, the interest in timber and concrete/steel hybrid structures is increasing. The purpose of this paper is to investigate the potential savings of CO2 emissions in the design of a multistory residential building - this by using timber and concrete in its superstructure instead of only concrete and concurrently ensuring global stability. The study is performed on an existing 17-story residential building with a pure concrete superstructure: The results indicate that the carbon-footprint of the building in question could have been reduced by 48% if a hybrid superstructure had been used instead.


Case study

Hybrid construction

Sustainable construction

Carbon dioxide


Martin Sleiman

Student at Chalmers

Mikael Johansson

Chalmers, Architecture and Civil Engineering, Construction Management


Anders Claesson

Anders Claesson Konstruktionsbyrå AB

IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs


IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs
Ghent, Virtual, Belgium,

Subject Categories

Construction Management

Other Civil Engineering

Building Technologies

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