ORIGINAL ARTICLE
Comparison of Actual Deformations of Historic Wooden Structures with Values Obtained from Static Calculations
 
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1
Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Białystok, Poland
 
2
Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
 
 
Submission date: 2024-09-02
 
 
Final revision date: 2024-10-06
 
 
Acceptance date: 2024-10-08
 
 
Online publication date: 2024-10-21
 
 
Publication date: 2024-10-21
 
 
Corresponding author
Kamil Zimiński   

Wydział Budownictwa i nauk o Środowisku, Politechnika Białostocka, ul. Wiejska 45E, 15-351, Białystok, Poland
 
 
Civil and Environmental Engineering Reports 2024;34(4):138-149
 
KEYWORDS
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ABSTRACT
In historic wooden structures, deformations can be influenced by factors that are negligible within the first 50 years of the building's existence. In attics where the roof covering is made of metal sheets, the air and structural elements heat up during the day and cool down rapidly at night. This phenomenon, over a long period, can cause micro-cracks and surface material degradation. For the study, historic buildings meeting the criteria for service class II according to PN-EN 1995-1-1 were selected. Measurements of deflections, humidity, and modulus of elasticity of the wood were conducted. The actual deflections of the examined structures were found to be 28% to 37% higher than those obtained from numerical calculations, indicating ongoing rheological processes in the wooden structures.
 
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