INSTALLATION FLOOR

The invention concerns an installation floor with a layer comprising a plurality of substantially rectangular floor panels (1) which are made of mineral hydraulically bonded material and are loosely disposed in a predetermined grid pattern on a stand arrangement consisting of individual vertically adjustable supports (3), spaces (4) being left for cables and pipes of the installation. The supports (3) comprise a cup (10) which, optionally via a part provided with a surface complementary to said cup (10), supports an associated floor panel (1) in the region of a corner thereof. The floor panels (1) are rebated in a stepped manner according to a set laying pattern, which optionally comprises given floor panels (1) supported in a removable manner. The floor panels (1) are laid such that their joins overlap at the connection between the rebates, floor panels (1) supported in a removable manner being supported only by adjacent floor panels (1).