Preconstruction means actions that are carried out when an area to be con-
structed is geotechnically too soft or difficult to construct and the area must be for
example solidified or mass in the area must be exchanged. As infra construction
is very energy intensive, preconstruction provides possibilities for significant
emission reductions when the preconstruction alternatives, areal mass balance
and alternative materials generated in the vicinity has been mapped early enough
The objective of this thesis was to study emission reduction potential in precon-
struction activities and how considering the preconstruction alternatives can con-
tribute to the climate targets of cities.
Literature review and CO2 emission calculations for actual cases were studied in
this thesis. The cases presented in this study are Ramboll Finland’s client cases
calculated for the cities of Helsinki, Turku and Tampere. The calculation method
used in the case examples is developed by Ramboll for CO2 emission calculation
purposes in infra projects following the standard CEN/TC 350 Sustainability of
The results of this thesis will contribute to cities climate target calculations, as
well as to national UUMA3 project objectives.