Abstract: A demountable modular floor for watertight raised decks consisting of a plurality of modularly assemblable composite slabs made of steel sheet and concrete, provided with a drainage system for collecting and conveying the rainwater between the slabs, wherein each composite slab comprises a bottom element (1) made of corrugated metal sheet surrounded by four suitably shaped metal sections (2, 3) and filled with a concrete layer (14), as well as four segments of upwardly open gutters (6, 7) peripherally arranged around said composite slab. The structure is completed by grid elements (8) covering the gutters (6) of larger width. The floor structure allows a rapid setting up of the raised deck and, at the same time, it affords the total dismantling thereof and prevents any seepage or leakage of water towards the underlying area.

Abstract: A modular structure for building parking lots, which is particularly suitable for building temporary parking lots, in which structure each basic modular unit comprises: a rectangular or square composite floor slab (3), four edge beams (4) along the sides of the said slab, four node elements (5) at the corners of the slab (3) for supporting the edge beams (4), four vertical pillars (6) below the said node elements (5), for bases (7) for supporting the structure on the ground below the said vertical pillars (6), a number of ties (8) and/or struts for bracing the structure, the bases (7) comprising means for adjusting the length of the pillars (6) and means for adjusting the position of the base plate with respect to the vertical position of the pillars (6).