PREVENTION OF ROUND TIMBER LATERAL CRACKING IN WOODEN HOUSE CONSTRUCTION
Journal Title: Architecture and Engineering - Year 2017, Vol 2, Issue 3
Abstract
The article is devoted to the most widespread defect of regularized round timbers in wooden house construction, i.e. their lateral cracking in the process of further use of buildings and structures. A method is proposed to cut lateral saw kerfs in the round timber surface upon timber rounding, which almost completely excludes appearance of cracks on exposed surfaces. Saw kerfs are cut in the exterior surfaces of round timber on the opposite side of the simultaneously manufactured technological notch. According to the results of theoretical and experimental studies, it was ascertained that the saw kerf is the main factor which excludes appearance of lateral cracking in regularized round timber. Taking into account the technological notch, the optimal depth of a saw kerf should not be more than 35% of the round timber cross-section radius. The absence of visible lateral macro-cracks on exposed surfaces of round timber will improve the appearance of a building and prolong its service life. Macro-cracks appear at the bottom of the technological notch and at the bottom of the saw kerf which serve as stress concentrators. Such stresses occurring due to the hygroscopic moisture gradient along the round timber cross-section radius and anisotropy of wood shrinkage in points with stress concentrators can exceed the limit values upon extension in the tangential direction, wherefore macro-cracks will form in the areas with stress concentrators. According to estimates, additional energy consumption for making a lateral saw kerf will be 1–2%.
Authors and Affiliations
Vladimir Glukhikh, Anait Akopian
Keywords
Related Articles
- EP ID EP353729
- DOI 10.23968/2500-0055-2017-2-3-3-10
- Views 87
- Downloads 0
FROM THE BASICS OF SPATIAL CONSTRUCTIONS TO CONSTRUCTION OF AN IMAGE (A CASE STUDY OF ENGRAVINGS BY GIOVANNI BATTISTA PIRANESI)
The article deals with the exhibition “Piranesi. Before and After. Italy—Russia. XVIII–XXI Centuries” held at the Pushkin State Museum of Fine Arts in Moscow in autumn, 2016. The exhibition revealed a new scientific inte...
TRANSPORT ENERGY EFFICIENCY ASSESSMENT ON THE BASIS OF THE LIFE CYCLE WITH THE ATTRACTION OF THE BARTINI TRANSFER ENTITY
A technique for assessing the transport energy efficiency on the basis of the life cycle is developed with the use of the Bartini Transfer entity. Main elements of the technique are the following: 1) assertion of the nec...
Bending of Sawn Wood Products Obtained from Conventional Sawing and Parallel to Generatrix Sawing
This paper considers bending of sawn wood products obtained from logs by conventional sawing and sawing parallel to generatrix. Issues related to strength and stiffness of sawn wood products sawn parallel to generatrix h...
DEVELOPMENT POTENTIAL OF CONSTRUCTION COMPANIES: TECHNICAL AND ECONOMIC ASPECTS
Introduction: The construction industry represents the priority area of the economy, which affects the quality of life of the population and other industries as well. Currently, many construction companies in Russia show...
FORECASTING OF ECOLOGICAL SITUATION IN COURSE OF BUILDINGS’ DESIGN
Design of buildings requires the all-round forecast aimed at the provision of ecologically safe environment in buildings while minimizing power consumption. To increase the efficiency of design solutions and indoor air q...