Abstract: Structural elements for the production of self-supporting structures are composed of a composition containing mineral and organic components and molded in modular structural shapes including a cube of side length L having vertical and horizontal holes traversed by threaded rods, a fork-shaped element, a Z-shaped element and a lintel element with projections of a width equal to L/3. The entire structure is held together by interfitting the projections and gaps between projections and with the threaded rods.

Abstract: This invention refers to a wood substitute with lignocellulosic and mineral material particles which are molded in sheet, e.g. plates and/or panels in different thicknesses or forms in stencil at choice, using in principal natural and artificial, and vegetal cellulosic material components, e.g. dried leaves, sawdust, rotten wood particles splinters, paperwastes, roots and mineral materials as limestone from sulphates type carbonates or calcium oxides, with synthetic binders from different chemical structures, with or without dyes, in these proportions: 35-60 by weight lignocellulosic components particles, 5-35 by weight limestone types, 5-30 by weight synthetic binders from different harmless chemical structures, with or without synthetic dyes from varied chemical structures and with or without requested additions.