| 摘要 |
<p>PCT No. PCT/SE80/00053 Sec. 371 Date Oct. 21, 1980 Sec. 102(e) Date Oct. 21, 1980 PCT Filed Feb. 27, 1980 PCT Pub. No. WO80/01817 PCT Pub. Date Sep. 4, 1980.A floor is disclosed comprising joists partially embedded in a slab. The joists are composed of a web and two flanges, the web having a lattice structure and the slab consisting of a cast, light material.</p> |
