Abstract
Scots pine (Pinus sylvestris L.) wood is the most frequently used building material in old churches of Central Poland. In the article, the density and compressive strength of Scots pine heartwood samples taken from old churches from the sixteenth, seventeenth, and eighteenth century were examined. The properties of the old wood were compared with contemporary wood of similar density. The results showed better quality of the ancient wood as compared to modern wood.
Highlights
Scots pine heartwood is the most frequently used building material of large constructional elements in antique churches of Central Poland
The results showed better quality of the ancient wood as compared to modern wood
The linear equation describing the relationship between the compressive strength parallel to grain and the density of heartwood extracted from six modern constructional elements rc = 0.1091 is practically consistent with the analogical equation given by Kollmann and Cote (1984) for wood with moisture content of 10 %, rc = 0.1051
Summary
Scots pine heartwood is the most frequently used building material of large constructional elements in antique churches of Central Poland. These churches are the oldest preserved wooden buildings in this area. The quality of the original old wood is usually mistakenly estimated as poor in preservation works, based on ravages appearing mostly in the outer areas of constructional elements (where sapwood dominates). Does this mean, that the entire constructional element, consisting mostly of heartwood, is in poor condition?
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