- BUILDING MATERIALS AND PRODUCTS
- To the Issue of Comparing the Physico-Mechanical Characteristics of Structural Timber of the XIX and XX centuries
- UDC 624.011.1:620.173.2

**Nikolay V. LINKOV**, e-mail: Nicklinkov@gmail.com

Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation

**Abstract**. For structural timber related to the construction periods of the XIX century and the end of the XX century, the moisture, density, strength, elasticity and deformation characteristics of the material, including the ultimate strength of the wood during compression along the fibers and under static bending, the module of elasticity of wood during bending, the upper limit of the area of elastic work of wood when compressed along fibers and when bending were determined. According to the specified characteristics, reduced to the standard wood moisture (W = 12%), a comparison of modern structural wood with wood of the XIX century, as well as with the corresponding normative values established in the current standards - Set of Rules 64.13330.2017 "SNiP II-25-80. Wooden structures" is made. A comparison of wood values related to different construction periods was carried out for two age groups - wood aged 75 years and wood aged 110 years. Statistical methods established the reliability of the difference between the characteristics of modern wood and structural wood of the XIX century in terms of density and temporal resistance to compression along the fibers.

**Key words**: structural wood, compressive strength along fibers, bending strength, upper limit of elastic work area, modulus of elasticity, material deformation. - REFERENCES

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