The effect of open air conditions on the properties of wooden material

In this study, is used Tanalith-C (CCA) for as a protecting and protim 230WR for as a water repelling. By using polyuretan and polivinalacetat (PVA) glues, some mechanic experiments are done with the specimens of laminated Scots pine (Pinus sylvestris L.) with solid wood of beech and austrian pine (pinus nigra). In addition the differences is observated at physical properties. At the specimens of laminated Scots pine (Pinus sylvestris L.) the usage of polivinalacetat (PVA) glue is not seen appropriate. Instead of this polyuretan glue which give positive effect to the mechanic properties, should be used. There is not important mechanical changing at the all specimens of impregnated , but at the specimens of unimpregnated are seen a significant strenght loss. At the end of this study are seen both of the preservation metarials supply sufficient protection. Key Words: Wood, bending resistance, pressure resistance, bonding resistance