BR-202020003607-Y1 - PROVISION APPLIED ON TUESDAY

Abstract

DISPOSITION APPLIED TO A TRUSS. This utility model patent application refers to a truss (1), belonging to the technical sector of civil construction, more precisely to the components of roofs of sheds and other buildings; said truss (1) of truss type, formed by: two upper chords, coplanar, parallel, left (2) and right (2)?; by a central lower chord (3), giving the truss a triangular section; by upper crossbeams (4) mounted between the upper chords (2), (2)?; and by lateral diagonal elements (5) mounted between the upper chords (2), (2)? and the central lower chord (3), wherein the upper chords (2), (2)? and the lower chord (3) are constituted by four identical profiles (10), wherein two profiles (10) constitute the respective upper chords (2) and (2)? and two interconnected and symmetrical profiles (10) constitute the lower chord (3); said profiled section (10) with section formed: by an extreme section of L-shaped section (11)-(12); by an intermediate section (13)-(14) formed by two flat sections (13) and (14) arranged at an angle to each other; and by an opposite extreme section of U-shaped section (15)-(16)-(17).

Inventors

• JOÃO CARLOS ROSA

Assignees

• JOÃO CARLOS ROSA

Dates

Publication Date

20260310

Application Date

20200220

Claims (1)

1. 1) - “ARRANGEMENT APPLIED TO A TRUSS”, this of the truss type, formed by: two upper chords, coplanar, parallel, left (2) and right (2)’; by a central lower chord (3), giving the purlin a triangular section; by upper crossbeams (4) mounted between the upper chords (2), (2)’; and by lateral diagonal elements (5) mounted between the upper chords (2), (2)’ and the central lower chord (3), characterized by the upper chords (2), (2)’ and the lower chord (3) being constituted by four identical profiles (10), wherein two profiles (10) constitute the respective upper chords (2) and (2)’ and two interconnected and symmetrical profiles (10) constitute the lower chord (3); said profiled section (10) has a defined section: by an extreme section of “L” section (11)-(12), formed by a larger branch (11) and a smaller branch (12) extended orthogonally from the former and located at the free end of the profiled section; by an intermediate section (13)-(14) formed by two angled flat sections: the first larger section (13), extended at an obtuse angle from the end of the larger branch (11) of the extreme “L” section (11)-(12); and by a smaller section (14) extended at an obtuse angle from the end of the larger section (13); said intermediate section (13)-(14) projected to the same side as the smaller branch (12) of the extreme section of “L” section (11)-(12); and by the opposite extreme section of “U” section (15)-(16)-(17), defined by the first branch (15) extended orthogonally from the end of the smaller intermediate section (14); the second transverse branch (16) extended orthogonally from the first branch (15) and the third branch (17) extended orthogonally from the end of the second transverse branch (16) and parallel to the first branch (15); said opposite extreme section of “U” section (15)-(16)-(17) is projected in relation to the surface (18) of the smaller intermediate section (14) opposite the surface (19) facing the side on which the extreme “L” section (11)-(12) is located by a height “h” greater than the diameter of the crossbar (4); the profiled section (10), which makes up the upper flange (2) or (2)’, has the extreme section of “L” section (11)-(12) arranged below and vertically; with the larger intermediate section (13) in an oblique position; with the smaller intermediate section (14) arranged in a horizontal plane; and with the opposite extreme section of “U” section (15)-(16)-(17) with the concavity facing downwards and projecting upwards in relation to the upper surface (18) of said smaller intermediate section (14); the ends (6) of the upper crossbeams (4) are joined to the upper surfaces (18) of the smaller intermediate sections (14); the transverse branches (16) of the opposite extreme “U” section (15)-(16)-(17) of the opposite profiles (10) that constitute the upper chords (2), (2)’ are arranged in a horizontal plane “X” located above the upper crossbar (4) and said transverse branches (16) support the tiles that make up the roof; the upper ends (6) of the diagonals (5) are joined to the upper face of the larger intermediate section (13); the two profiles (10), which make up the lower chord (3), are arranged vertically and symmetrically, with the larger intermediate sections (13) of said profiles (10) being juxtaposed, joined to each other and arranged vertically; the extreme “L” sections (11)-(12) of said joined profiles (10) are arranged superiorly and orthogonally to each other; the smaller intermediate sections (14) and the “U” section sections (15)-(16)-(17) of the two joined profiles (10) are arranged below; the lower ends (6) of the opposite diagonals (5) are joined on the concurrent upper surfaces of the larger branches (11) of the extreme “L” sections (11)-(12).

Description

INTRODUCTION [001] This descriptive report refers to a utility model patent application for a purlin, belonging to the technical sector of civil construction, more precisely to the components of roofs of sheds and other buildings, which has been arranged to span larger open spaces compared to similar usual ones. STATE OF THE ART [002] Warehouses are large buildings intended to house industrial facilities, to act as a product distribution center warehouse, to function as a sports gymnasium, and others. Their roof generally has a metal structure to support high loads and is formed by: a main structure (trusses) 100 supported on opposite columns; purlins 101 orthogonal to the main structure and longitudinal to the building; bracing 102 mounted between purlins; and roofing sheets 103 mounted on the purlins (fig.6). [003] Purlins are used to support roof tiles and also contribute to the overall stability of the structure. They must withstand the wind load from the tiles, the overload and self-weight of the tiles, as well as other permanent or variable loads that may act on the purlin. Their positioning and spacing depend on the applied load and the type of tile used. The most commonly used sections for cold-formed and rolled profile purlins are “U”, “C”, “I” and others. [004] Multiplanar truss purlins are also known comprising (fig. 7): two parallel and coplanar upper chords 200; a central lower chord 201, forming a triangular section; and connecting and bracing posts and diagonals 202 between chords, thus providing the necessary rigidity for the purlin in all directions. [005] The most common profiles for the bars of flat truss purlins are open profiles, such as angle bars or U-profiles. There is also a growing use of tubular profiles, which has opened up a new possibility for the application of tubes in truss purlin bars. [006] Although the trusses constructed in this way serve their purpose, they have a span capacity that is not entirely adequate for the current requirements of warehouses, particularly those for certain activities that require large areas, such as product distribution centers. Because of this, it is often necessary to use intermediate columns (pillars), which is not always desirable from the point of view of the architectural solutions adopted. OBJECTIVES OF THE PROVISION [007] Thus, the objective of the present utility model patent is to provide a trussed purlin that overcomes the limitations and problems of the aforementioned state of the art, particularly with regard to having the capacity to cover larger spans in relation to conventional purlins. [008] Another objective is to provide a simple construction and fabrication truss for the third truss. [009] Another objective is to provide a trussed third that favors greater simplicity in its assembly in the building that receives it. [010] Another objective is to provide a trussed purlin that can be applied to different types of roofs, such as shed, gable, arched and others. [011] Another objective is to provide a cost-effective truss third. BRIEF DESCRIPTION OF THE DISPOSITION [012] In view, therefore, of the aforementioned problems and in order to overcome them and aiming to meet the related objectives, the arrangement applied in the truss, object of the present utility model patent, was developed, which is of the truss type, formed, therefore: by two upper chords; by a lower chord, forming a triangular section; and by uprights and bracing diagonals mounted between the chords, in the present arrangement, the chords are formed by four identical profiles, with two profiles forming the respective upper chords and two profiles connected and symmetrically arranged forming the lower chord, such that crossbars are mounted between the upper chords and diagonals are mounted between the upper and lower chords, giving a triangular section to the truss. Said profile that forms the chords has a section comprising: an extreme section in an “L” shape; an intermediate section formed by two angled flat sections; and by an extreme opposite section with a "U" shaped cross-section. This profile configuration is suitable for, when it forms the upper flange, receiving the ends of the upper crossbeams and the upper ends of the diagonals in its angled intermediate sections, and for its "U" shaped section to support the roofing sheet in a position above the upper crossbeams. This profile configuration is also suitable for two profiles arranged vertically and symmetrically, as well as connected through their intermediate sections to form the lower flange, and for receiving the lower ends of the diagonals in their upward-facing "L" shaped extreme sections. [013] This purlin construction overcomes the limitations of conventional purlins because it provides greater stiffness compared to them, thus making it possible to span larger distances. The construction and technology present in the purlin object of this provision allow the construction of warehouses, buildings an