Wooden beam for use in e.g. wall, has timber core filled with wooden material e.g. steel or fiber material, where wooden beam is made of hard wood, beach or ash tree and ratio of length to diameter of wooden beam amounts to specific value

摘要

The wooden beam has a raw timber core that is filled with foreign wooden material e.g. steel or fiber material, where the wooden beam is made of hard wood, beach or ash tree. A surface of the wooden beam is planed with sharp or broken edges, where ratio of length of the wooden beam to diameter of the wooden beam amounts to 10:1. Tension rods or tension units are guided into a core bore for reinforcing a tension side of bending carriers.