Abstract: A method for producing a reinforced concrete part, having a tensioned portion subjected to pull stresses and tending to stretch under the load, and which includes a reinforcing frame with at least one tensioned longitudinal bar rigidly connected to the concrete by an adhesive connection that determines a tangential adhesive stress along the bar that varies on the basis of applied pull stresses.

Abstract: A reinforcing bar with improved adherence for reinforced concrete component, consists of a metal profile section (1) in the form of a flattened strip of rectangular cross section with two opposite wide faces (10, 10?) on which longitudinally separated projecting anchoring portions are formed.

Abstract: A construction element of reinforced-concrete panel (1) in which is embedded a reinforcement framework includes at least one main framework layer extending along a tensioned outer face (11) of the element (1) and to which an inner framework (3) is attached for securing to the concrete, extending to the thickness of the element (1), the latter being produced, after the placement of the reinforcement framework, by pouring concrete onto a thin continuous wall (2) forming a sacrificial formwork. The thin wall (2) forming the sacrificial formwork extends along the tensioned face (11) of the element (1) and at the same time forms the main framework layer of the element (1), the nature and thickness of the thin wall (2) being determined so as to withstand the tensile stresses generated by the forces applied to the element (1) without the risk of separation from the concrete.

Abstract: A method for producing a reinforced concrete part, having a tensioned portion subjected to pull stresses and tending to stretch under the load, and which includes a reinforcing frame with at least one tensioned longitudinal bar rigidly connected to the concrete by an adhesive connection that determines a tangential adhesive stress along the bar that varies on the basis of applied pull stresses.

Abstract: A construction element of reinforced-concrete panel (1) in which is embedded a reinforcement framework includes at least one main framework layer extending along a tensioned outer face (11) of the element (1) and to which an inner framework (3) is attached for securing to the concrete, extending to the thickness of the element (1), the latter being produced, after the placement of the reinforcement framework, by pouring concrete onto a thin continuous wall (2) forming a sacrificial formwork. The thin wall (2) forming the sacrificial formwork extends along the tensioned face (11) of the element (1) and at the same time forms the main framework layer of the element (1), the nature and thickness of the thin wall (2) being determined so as to withstand the tensile stresses generated by the forces applied to the element (1) without the risk of separation from the concrete.

Abstract: The invention concerns a tank for a fluid product, having a bottom (4) and a resistant side wall (10) composed of juxtaposed prefabricated panels (1) each comprising a wall element (2) covered, on an internal face (22), with a continuous sealing sheet (3) extended by three sections (33, 33?, 34) which cover respectively the lateral sides (23, 23?) and the lower side (24) of the wall element (2) and overlap on the outside of the wall (10). Said panels are placed on a slab (4) covered with a sealing sheet (42) and the adjacent overlapping sections of the sealing sheets (3, 42) covering the set of the panels (1) and the bottom (4) are connected together in a sealed fashion. Such a tank which is easy to build and to maintain, can contain drinking water or a polluting product.

Abstract: A molded concrete member has two facings, respectively active and passive, spaced from one another by a preselected distance, and between which is embedded a reinforcing cage. The cage has, on either side of a neutral axis, two layers, respectively active and passive, which are separated by a spacing. Each layer has at least one longitudinal solid bar of preselected cross-section, the spacing and the cross-section of the bars being determined in relation to loads to be applied, the two layers are respectively parallel to both facings of the molded element and are connected by transverse linking armoring.

Abstract: A metal bridge includes at least two longitudinal girders connected by a plurality of transversal spacers and on which rests a platform. Each longitudinal girder is built by butt-jointing a number of prefabricated metal elements in the form of tubular hollow coffers of polygonal transversal section, each extending over a length compatible with transport and lifting devices. At least certain coffers of two neighboring girders are connected in twos by a plurality of spacers, each composed of a metal tube.

Abstract: The invention relates to a conduit for circulation of fluid comprising a sealed pipe (A) fixed to a rigid supporting body (B) comprising a horizontal base having a lower face bearing on a laying surface (C) and two lateral wings going up vertically along the sites of the lower section of the pipe (A), said supporting body (B) comprising, on either side of the tubular enclosure (A), a single-piece portion (31, 31′) having, as a transversal section, a L-shaped profile comprising a substantially vertical branch (32) forming the wing extending along the corresponding side of the enclosure (A) and a substantially horizontal branch (33) extending beneath the former in order to form at least a portion of the base (3) of the supporting body (B) resting on the ground (C).

Abstract: The invention relates to a reinforcing cage for a concrete element (1) comprising at least two layers of longitudinal armorings (C, T) maintained spaced from one another by transverse armorings (E).

Abstract: A conduit for the circulation of fluid under pressure comprising a tubular enclosure delimited by a thin wall and fixed on a rigid base slab of molded material. The upper part of the enclosure comprises, in cross-section, at least three thin wall segments, including two lateral segments each extending from a lower side to an upper side, and at least one upper segment closing the enclosure by connecting the upper sides of the lateral segments. Each lateral thin wall segment is joined to a rigid support element of molded material fixed at its base to the corresponding side of the slab and comprising an inner surface conjugate with that of the lateral segment onto which the latter is applied. The inner surface extends from the level of the upper surface of the slab as to a level sufficient to maintain the rigidity of the lateral segment over its entire height.