Box-shaped structural beam

摘要

The box-shaped structural beam, consists of two parallel hardwood beams positioned at a distance from one another constituting the top and bottom flange beams (1-2) of the structural beam, a wooden web plate (3-4) attached along each side of said flange beams so that a box-shaped structural beam is formed, a steel section (5) fastened parallel to the inside surface of at least one of the wooden flange beams (1-2) which is fully enclosed in the box-shaped structural beam, and stays (6-7) which serve to reinforce the whole fastened between the wooden flange beams and the steel section.