In parallel with the famous annually International Conference Series TUSNAD, organised on the topic of built heritage rehabilitation, starting from 1997, a series on historic structures began to offer the specialists an opportunity to discuss major aspects regarding the resistance and the stability of historic buildings.

The volume includes the abstracts of the 13^th edition of the International Conference on Historic Structures held in Cluj-Napoca and Şimleu Silvaniei, having as topic the Historic Timber Structures, with the intention to make the engineers become aware of the built heritage values, as well as to create a dialogue between all the participants to the process of built heritage rehabilitation, to assure an exchange of information between the specialists from our country and the ones from abroad, to diminish the destruction caused by the lack of professionals and human resources.