ABSTRACT
This paper presents an overview of the fire safety analysis conducted for timber structures of Joensuu Light House- a 14-story mass timber residential building. The tabulated data of Finnish building regulations allows only 8 story high timber buildings and the use of visible timber structures is restricted. Thus, a risk analysis and advanced calculations were needed to verify the fire safety of the considered building. The results of the performance-based fire design showed that in this case: 1) most of the load-bearing structures can be designed safely to class R90 (tabulated data of Finnish building regulations for over 8-story buildings requires class R120) and 2) Over 25% of the apartments’ walls and/or ceiling can be left unprotected so that the increase in fire load is not too large.
