COMPARATIVE ANALYSIS BETWEEN THE DESTRUCTIVE BENDING MOMENTS OF END AND T-SHAPE CORNER JOINTS OF FRAME STRUCTURAL ELEMENTS MADE OF SOLID CHESTNUT WOOD WITH A CROSS SECTION OF 50 X 25 MM

Abstract

A comparative analysis between the destructive bending moments of end and T-shape corner joints of details from solid chestnut wood (Castanea sativa Mill.) with cross section of 50 x 25 mm has been done. In this study has been found that the types of joints and the area of their contact surface have considerably influence on their strength characteristics. The T-shape corner joints have in average about 20 % higher destructive bending moment compare to the end corner joints. The non-dismountable mortise and tenon joints are destroyed by average of 80 % higher bending moment compare to the dismountable joints. Dowel joints have two times lower bending moment compare to the mortise and tenon joints and from 3 to 24 % higher bending moment compare to the dismountable joints.