| 摘要 |
A wooden beam consisting of several superimposed and adjacent strips (1a-1i) glued together, grooved surfaces (2) being provided on those sides of the strips which are located against one another, the adjacent grooved surfaces (2) being thus arranged to interlock, and the adjacent strips (1a-1i) being interconnected by means of glue provided between the grooved surfaces (2). The wooden beam of the invention is moisture-resistant and will not twist and warp. |
