Girder made from wood having a polygonal cross-section used on a building site comprises partial girders joined together by wooden screws

摘要

Girder (1) made from wood having a polygonal cross-section comprises partial girders (5) joined together by wooden screws (7). Preferred Features: The screws are inserted into the girder from one side, preferably from opposite-lying sides. Partial surfaces (3) run in the longitudinal direction of the girder and aligned parallel to each other.