Part of the collaboration development work was to gain comparable carbon footprint data from the whole life cycle of a residential and an office building designed with different wooden frame options. In both building type cases the different wooden frame options were compared to a typical concrete building.

Concrete office building input data:

Building type

Office

Building year

2022

Gross area

16600 brm2

Number of floors

11

Form of heating

Geothermal and district heating

Energy class

A

Calculated purchasing energy consumption

Electricity: 768MWhDistrict heating: 493 MWhDistrict cooling: 102 MWh

Consequence class

CC3, CC2

Reliability class

RC3, RC2

Fire protection level

R120

Concrete residential building input data:

Building type

Residential building

Building year

2022

Location

Espoo

Gross floor area

2500 m2

Number of floors

6 (+ 1 basement floor)

Plot area

3789 rp-m2

Form of heating

Geothermal heating

Energy class

A

Calculated purchasing energy consumption

Electricity: 187MWh

In the collaboration we designed three different low carbon frame options whose emissions were compared to the similar concrete buildings. The three options were:

  • a massive wood and low carbon concrete framed office building

  • a wooden conversion design of the concrete framed residential building

  • a wooden framed residential building that was optimised for wood from the beginning

Read more about the created wooden frame solutions here.