Abstract: The present invention concern the fabrication of panels (11) (12) in which the elements (2) are assembled by gussets (3) (13) during the preparation in the mold. A porous facing (5) constituting an external side that allows degassing (6) that is a result of the expansion of reactive products. The porous surface facing (5) is only impregnated (7) leaving the external surface of the panel rough for the future application of a coating. The present invention allows for a perfect water tight seal (11) (12) between the panel, the ground and the frame with junction profile (16) and a tube for the injection of products (18) with no cavities to be filled-up after set-up.

Abstract: A one piece assembly of a small production unit (23) for panels intended for building comprises an upper tray (2) a bottom tray of longer length (1) a collapsible crane (7) situated on the upper tray (2) supporting the crane structure (7) is horizontally mobile with rollers (11) supported on rail (12) positioned on the bottom tray (1) without requiring an external support lying on the ground. The vertical movement of the upper tray (2) is assured by an assembly of screw jacks (4), plates (18), guides (14) and runners (13). The compact assembly (23) of the production unit can be moved from site to site without heavy handling movement.