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Wood has been a favourite construction material since the ancient times because of its natural beauty and excellent properties, such as high specific strength, heat insulation and ease of handling and processing. It was also used in Safranbolu, where Turkish Ottoman civil architectural samples have been carefully protected and preserved without losing their originality. It was inscribed to “The World Heritage List” by UNESCO in 1994. In this study, density, Brinell hardness and compression strength perpendicular to the grain of Scotch pine (Pinus Sylvestris Lipsky.) wood, from the fl oor joist of 10 different demolished historical Safranbolu houses for 10 different years, were determined and compared with those of wood from freshly cut trees. The highest decrease in compression strength perpendicular to the grain of salvaged Scotch pine wood used as floor joist for 210 years was nearly 27 percent lower than those of wood from freshly cut Scotch pine. The results indicate that the physical properties, Brinell hardness and compression strength perpendicular to the grain of the Scotch pine wood were significantly affected by the 210-year service life.Drvo je još od antičkih vremena zbog svoje prirodne ljepote i izvrsnih svojstava kao što su velika specifična čvrstoća, toplinska izolacija i jednostavnost rukovanja i obrade često upotrebljavano kao građevni materijal. Ono je za tu namjenu iskorištavano i u Safranbolu, gdje su tursko-osmanski civilni arhitektonski primjerci pažljivo zaštićeni i očuvani bez narušavanja njihova originalnog izgleda. Ta je kulturna baština 1994. godine upisana u Popis svjetske baštine UNESCO-a. U ovom su istraživanju prikazani rezultati mjerenja gustoće, tvrdoće prema Brinellu i tlačne čvrstoće okomito na vlakanca na uzorcima drva škotskog bora (Pinus sylvestris Lipsky.) napravljenima od podnih greda iz deset različitih demoliranih povijesnih kuća iz Safranbola iz deset različitih godina. Te su vrijednosti uspoređene s vrijednostima izmjerenima na uzorcima od drva svježe srušenih stabala škotskog bora. Najveće smanjenje tlačne čvrstoće okomito na vlakanca izmjereno je na uzorcima od škotske borovine koja je 210 godina služila kao podna greda. Ta je tlačna čvrstoća bila gotovo 27 % manja od tlačne čvrstoće drva svježe srušenih stabala škotskoga bora. Rezultati pokazuju da je na fizikalna svojstva škotske borovine, tvrdoću prema Brinellu i čvrstoću okomito na vlakanca znatno utjecalo 210 uporabnih godina

The Effect of Aging on Various Physical and Mechanical Properties of Scotch Pine Wood Used in Construction of Historical Safranbolu Houses