| 摘要 |
<p>The beam is intended for use in framed building constructions as a support for floor structures of prefabricated concrete. During the erection of the frame, the beam is self-supporting and when incorporated in the final construction, interacts with the floor and can thereby support heavy loads. The beam can be used in the construction of office buildings, apartment houses and industrial buildings. It has a large load-bearing capacity and excellent fire-resistance characteristics.</p> |
