| 摘要 |
The invention relates to improved lightweight caissons for one-way slabs, made from lightweight materials of the expanded polystyrene and/or aerated concrete type and having a mesh of glass fibre or another flexible material affixed to the base thereof. The invention is characterised in that an elongate recess extends parallel to the ribs in order to house a pipe for electrical pre-installations which rests on the flexible mesh, said caissons being joined by the meshes with a space being left for the ribs. |
