Rough casting for flooring - has superimposed layers alternately thin and thick resting on shoulders of beams

摘要

The rough casting (23) on the floor consists of several superimposed layers, and rests on shoulders of two successive beams (11, 11'). In between the beams on the rough casting (23) is a comparatively thin middle layer (24) of glass fibre concrete. The binder is mineral. The layer (24) has free ends (25, 16) resting on the layer underneath (27) which is relatively thick. The underneath layer (27) is made of a material which is insulating and of low density, and has two side surfaces (28, 29) facing the ends (21, 20') of the beams. The rough-casting (23) has a bottom layer (34) which is thin and forms part of the layer (27) above it. The bottom layer is made of the same material as layer (24). The top layer (35) is relatively thick and is on top of the thin layer (24). The rough casting (23) is surmounted and partly embedded in concrete forming the compression layer (46) the upper surface of which (47) forms the ground surface.