FR2797899A1 - Sound insulating panelling for building construction has laminated wood beams supporting standard wood flooring panels and carrying floating tiling - Google Patents

Abstract

The sound insulating panelling for building frame construction has self supporting beams made of 'Lamibois' (rtm) and a standard wood floor (1) screwed to the beams. A floating tiling (5) is placed on the standard wood floor. The floor can be mounted on battens (2) themselves fixed to the beams. An insulating film (6) can be placed between the tiling and floor.

Description

The present invention relates to a wooden structure for making the frame and floors of a building, the frame being composed of a set of industrial trusses whose extracts support the floor.

It is first of all reminded of the technical context in which the invention is situated. with reference to the appended drawings which will be explained below.

The Applicant manufactures and markets industrial farms, known as load-bearing, made of a type of very high resistance laminated wood called "Laminated veneer lumber".

Two types of farms are proposed, namely the simple farm (a) (see figure <B> l </B> a) and the farm on encuvement (b) (see figure 1 b).

All the supporting beams (c) or (d) in "Laminated veneer lumber" of a frame is intended to receive a floor whose standard structure is shown on the vertical section in Figure 2a, showing the sound insulation technique and current thermal.

A floor (e), for example in agglomerated panels, is screwed into joists (b) laid flat and screwed onto solid wood beams (g). On a ceiling (i), for example in "plasterboard" and between the ties, there is a layer of glass wool (h) and a layer of air (j) is reserved between the glass wool and the floor, the dotted lines (k) and (I) indicating the location of the spacers and the hook (m) symbolically representing the fixing of the ceiling.

The sound performance level of a standard floor of this type is of the order of dBA.

The addition of a floating slab not shown on the standard floor significantly improves this performance but is not satisfactory in terms of rigidity and the transmission of vibrations produced by dynamic loads. The currently known solution, providing the best comfort in terms of sound, in particular with regard to vibrations due to dynamic loads, is that of the concrete slab in hollow body whose sound performance is of the order of 52 dBA. However, this solution has major drawbacks: its cost, the feeling of a cold wall, cracks or other processing faults which reduce its thermal insulation and / or sealing and / or resistance performance and which generally requires intermediate dividing wall causing development constraints and extending construction.

The Applicant has had the idea of combining the various aforementioned wooden structures and has surprisingly found that the combination provides sound insulation of the same quality as the concrete slab in hollow body while eliminating the drawbacks.

The invention consists of a wooden structure for the realization of the frame and floors of a building, the frame being composed of a set of industrial trusses supporting a standard wooden floor, characterized in that it comprises in combination - self-supporting trusses with load-bearing "Lamibois" ties, - a standard wooden floor screwed onto the "Lamibois" ties - a floating slab placed on the standard wooden floor.

More particularly, this wooden structure consists of - a floor laid on joists themselves laid flat on the supporting beams, the fixing of the floor in the beams being carried out by screws passing through the joists, - a floating slab laid flat on the floor, an insulating film interposed between slab and floor, - a layer of air reserved between the joists and a layer of thermal insulation placed on the ceiling between the ties.

The invention will be better understood using the following description made with reference to the following appended figures # Figure 1 a: diagram of a simple truss (a) with supporting entry (c) made of high resistance laminate of the "Lamibois" type ", # Figure 1 b: diagram of a truss on encuvement (b) with supporting entry (d) in high resistance laminate of the" Lamibois "type, # Figure 2a: view in vertical section of a standard sound floor structure, # Figure 2b: vertical section view of a sound floor structure according to the invention.

A floor (1), for example in agglomerated panels, is placed on joists (2), themselves laid flat on beams (3) in "Laminated veneer lumber".

The fixing of the floor (1) in the ties is carried out by screws (4) passing through the joists (2).

A floating slab (5), for example a chipboard floor, is laid flat on the floor (1).

Between said floating slab (5) and the floor (1) is interposed a sound insulating film according to a technique known per se.

On the ceiling (7) and between the strips of "Laminate" (3) is placed a layer of thermal insulation (8), for example a glass wool.

An air layer (9) is reserved between the joists (2) and the insulation (8), in a manner known per se.

The combination of these three techniques allows to obtain phonic performances close to those of a concrete slab in hollow body and an unexpected comfort with wood materials in particular in terms of stiffness and dynamic loads.

In addition, compared to a concrete slab in a hollow body, the invention - makes it possible to work in a dry environment. Construction times are therefore significantly reduced, - eliminates the cold wall effect provided by concrete, - does not have the disadvantages, and hidden defects of a concrete slab such as thermal bridges, cracks or others, - presents an important economic advantage compared to the solution concrete slab + industrial framework on slab, - removes the constraints of development of the ground floor since the farm in "Lamibois" is self-supporting and does not require intermediate support as in the solution with concrete slab.

Claims (2)

<B><U>REVENDICATIONS</U> </B> 1. Wooden structure for the realization of the frame and floors of a building, the frame being composed of a set of industrial trusses supporting a standard wooden floor, characterized in that it comprises in combination - self-supporting trusses "Lamibois" carriers, - a standard wooden floor (1) screwed onto the "Lamibois" beams (3), - a floating slab (5) placed on the standard wooden floor. 2. Wooden structure according to claim 1, characterized in that - the floor (1) is placed on joists (2) themselves laid flat on the supporting struts (3), the fixing of the floor (1) in the ties being produced by screws (4) passing through the joists (2), - the floating slab (5) is laid flat on the floor (1), an insulating film (6) interposed between slab and floor, - a layer of air (9) is reserved between the joists and a layer of thermal insulation (8) placed on the ceiling between the ties.