Patent ID: 8910450
Filing Date: 2014-12-16
Classification: E04B,E04G

Abstract:
1. A method for strengthening and lightening floor and roof framing using a plurality of molds, the method comprising: transversally installing on each of a plurality of prefabricated beams a device comprising a one-piece tensile-strength resistant profile having two walls connected by a base, two screws and a pin, and at least one of holes or projections to receive reinforcing rods to be used in combination with the prefabricated beam, the profile having a lower part, in such a manner that an inner face of the base of the profile is in direct contact with a base of the prefabricated beam and the walls of the profile are in direct contact with edges and adjacent sides of the prefabricated beam; placing the screws into threaded holes for housing the screws in both profile walls until reaching the prefabricated beam without perforating the prefabricated beam, leaving a screw segment remaining protruding outwardly from an exterior surface of one of the two profile walls, wherein the threaded holes are formed in the walls of the profile symmetrically at a height from the base of the profile that is lower than a height of the prefabricated beam; fixing the pin from a first one of the profile walls to a second one of the profile walls using the holes for housing the pin in both profile walls, the pin remaining parallel to the profile base and at a distance from said base equal to the beam height; positioning the plurality of prefabricated beams with the installed devices, such that the beams are spaced apart from each other at a distance equal to a cross-sectional size of the molds on parallel walls or girders; positioning the molds on the screw protruding segments between adjacent ones of the profiles to form channels partially surrounding the prefabricated beams and the profiles; pouring the concrete to cover a top of the mold and fill the channels such that the screws are not encased in the concrete; and after the concrete is set, removing the screws and the molds.