GB2107752A

GB2107752A - A noise damping and concealing wall

Info

Publication number: GB2107752A
Application number: GB08205023A
Authority: GB
Inventors: Wolf-Dieter Rochell
Original assignee: MAMSERO AG
Current assignee: MAMSERO AG
Priority date: 1981-10-14
Filing date: 1982-02-19
Publication date: 1983-05-05
Also published as: IT8209355A0; FR2514389A1; DE8129931U1; NL8200313A; BE892574A

Abstract

The wall consists,of upright posts (1) with supporting surfaces for supporting, between each two neighbouring posts and a vertical array of horizontally extending wall- plates (3) mounted the one above the other like the slats of a Venetian blind, the lower edge of each plate closely overlapping in front of the upper edge of the one below. For supporting the plates (3), each post (1) has a vertical array of spaced apart supporting pockets (2). Each pocket has a backwards-and-downwards sloping lower supporting surface (7) and an upwards-and-backwards sloping supporting surface (8). Each pocket having, near the forward surface (1a) of the post (1), a forward opening of height (10) at least equal to the height (8a) of the back supporting surface (8). Each plate (3) has at each end a rebate giving a cut-back supporting surface (11, 12) for supporting the plate (3) in the pocket (2). <IMAGE>

Description

SPECIFICATION Set of prefabricated parts for constructing a noise damping and concealing wall The invention relates to a set of prefabricated parts for making noise-damping and concealing walls, as described in the preamble of Claim 1.

In the known walls of this kind the wall-plates are usually rectangular planks. The upright posts are members of double-T section. Between the two posts of each neighbouring pair the planks are mounted horizontally in vertical array, the one above the other like the slats of a Venetian blind, the lower edge of each plank closely overlapping forward of the upper edge of the next lower plank, each plank being tilted upwards and backwards.

Each plank is supported above the next lower one in that the lower edge of the plank is jammed between the next lower plank and the side-flange of the post.

To assemble the wail, after the posts have been installed, the lowest plank is first inserted between the flanges of the double-T-section posts, then the next higher one and so on, the edges of the planks overlapping. To subsequently replace a defective plank it is necessary to begin by removing all the planks above it.

In other known noise-damping and concealing walls each post has, at each side, a vertical array of inclined pockets for receiving the ends of the planks. The pockets are in the form of slots into which the ends of the planks are inserted obliquely from above. But the slots necessarily prevent the planks from touching each other where they overlap, and sound travels through the gap.

The slot-like pockets do allow a single plank to be removed and replaced without disturbing the planks higher up, but due to the gap between the planks the requirements of sound-damping and concealment are not met. A further disadvantage is that it is often difficult to insert the planks into the narrow slots and remove them subsequently.

This makes erection and repair of the wall a time consuming and costly process.

The intention in the present invention is to provide a set of prefabricated parts for constructing a noise-damping and concealing wall, as described in the preamble of Claim 1, with wall-plates arranged horizontally in vertical array like the slats of a Venetian blind, the plates overlapping closely at their edges so that their surfaces touch, but so arranged that each individual plate can be removed and replaced without disturbing the plates higher up.

The problem is solved, according to the invention, essentially by the characteristics claimed in Claim 1. Further advantageous characteristics of the invention are described in the subsidiary claims 2 to 7.

The invention has the special advantage that during erection of the wall, and also when a defective wall-plate has to be removed and replaced, the wall-plate can be inserted, or removed, from the front face of the wall, the pocket of the post being open at the front.

Consequently the motor vehicle, such as a crane or the like, normally used in these operations can simply drive up to the wall on the neighbouring highway and the crew can attend to the wall, at any location, rapidly and conveniently from that side. Due to the fact that each plate has, at each end, a rebated lower edge providing a cut-back surface by which the plate is supported in the pocket of the post, the lower edge of each plate projects downwards from the pocket far enough to overlap the upper edge of the next-lower plate.

This locks each plate securely in place, preventing any risk of the plate tilting forwards, even if struck from the front, and falling away from the wall.

Assembly of the wall, and replacement of plates, is further facilitated in that, as described in Claim 2, each pocket has a horizontal supporting surface in front of and adjacent the main supporting surface for the plate. During assembly of the wall, or replacement of a plate, the plate can conveniently be rested temporarily on the horizontal surface before being pushed fuily home into the pocket The characteristics of Claims 3 to 5 improve the noise-absorbing properties of the wall and also facilitate its erection. The characteritics of Claims 6 and 7 further facilitate replacement of plates and give the wall still better noise-damping properties.

Examples of the invention are shown diagrammatically in the drawing, in which: Figure 1 is a space-view of the noise-damping and concealing protective wall during erection.

Figure 2 is a side view, drawn to a iarger scale, of an upright post supporting several wall-plates.

Figure 3 is a horizontal section through a post, taken in the plane Ill-Ill of Figure 2.

Figure 4 shows a detail IV of the wall, drawn to a larger scale, as seen in the direction of the arrow Viz Figure 1.

The noise-damping and concealing wall shown in the drawing is assembled from prefabricated parts made of concrete or artificial stone, or in some cases of metal and/or synthetic resin.

As shown in the drawing, the wall consists of upright posts 1 between each two of which is installed a vertical array of horizontal plates 3 mounted the one above the other like the slats of a Venetian blind, each plate sloping backwards-andupwards, its lower edge 5 overlapping closely in front of the upper edge 4 of the next lower plate.

Each plate sits, at each end, in a pocket 2 of the upright post 1.

Each pocket 2 has an inclined lower surface 7 for supporting the rebated lower edge 11, 12 of the end of the wall-plate 3, and a second inclined supporting surface 8 for supporting the back surface of the wall plate 3, these two supporting surfaces, which are perpendicular to each other, sloping backwards, with respect to the horizontal and vertical, at an angle 6 of approximately 1 50 to agree with the angle of slope of the wall-plate 3.

Each pocket 2 has an opening 10 at the forward surface 1 a of the post 1, of height 1 Oa at least equal to the height 8a of the back surface 8 of the pocket. And each wall-plate 3 is rebated at each end to form a set-back lower edge 11, 1 2 for resting on the inclined lower surface 7 of the pocket 2, so that the lower edge 5 of each plate 3 projects downwards from the lower surface 7 of the pocket 2 far enough to overlap the upper edge 4 of the subjacent wall-plate 3.

Each pocket 2 has, forwards of the backwards and-downwards inclined lower supporting surface 7, and adjacent to it, near the front surface 1 a of the post 1, a horizontal surface 13' on which the plate 3 can be temporarily rested during assembly of the wall, before being pushed home into the pocket 2.

When it becomes necessary to replace a defective wall-plate 3, the defective plate can be removed as indicated by the chain line 3' in Figure 2, the new plate being inserted similarly.

Each wall-plate 3 has a sound-absorbing porous surface layer 3a. The plate can, if desired, be made entirely of lightweight concrete, or it can have a surface coating of a porous substance, preferably expanded clay.

To ensure a good contact where the plates 3 overlap, there can be provided a seal 1 3 between the edges 4, 5 of the plates. The seal can be made of long-lasting elastomer and can comprise a filling tube 14 embedded in the elastomer.

As an alternative to a surface layer of expanded clay, each wall-plate can be sheathed with a sound-absorbing layer of metal or synthetic resin, or the entire wall-plate can consist of one or more layers of sheathing of this kind.

Claims

1. A set of prefabricated parts, particularly of concrete or artificial stone, for constructing a noise-damping and concealing wall, the wall consisting of upright posts with supporting surfaces for supporting, between each two neighbouring posts, a vertical array of horizontally extending wall-plates mounted the one above the other like the slats of a Venetian blind, the lower edge of each plate closely overlapping in front of the upper edge of the one below, the set being characterised in that for supporting the plates (3) each post (1) has a vertical array of spaced-apart supporting pockets (2); each pocket has a backwards-and-downwards sloping lovver supporting surface (7) and an upwards-and-backwards sloping supporting surface (8);; each pocket having, near the forward surface (1a) of the post(1), a forward opening of height (10) at least equal to the height (8a) of the back supporting surface (8); each plate (3) has at each end a rebate giving a cut-back supporting surface 11 1, 12) for supporting the plate (3) in the pocket (2).

2. A set of prefabricated parts as claimed in Claim 1, characterised in that adjacent the sloping lower supporting surface (7) and forwards of it, towards the front face (1 a) of the post (1), each pocket (2) has an approximately horizontal supporting surface (13').

3. A set of prefabricated parts as claimed in Claims 1 or 2, characterised in that each wallplate (3) has a porous sound-absorbing surface (3a).

4. A set of prefabricated parts as claimed .n Claim 3, characterised in that the plates (3) are made of lightweight concrete.

5. A set of prefabricated parts as claimed in Claim 3, characterised in that each plate (3) has a porous surface layer made of expanded clay.

6. A set of prefabricated parts as claimed in one or more of the Claims 1 to 5, characterised in that the overlapping edges (4, 5) of the plates (3) are sealed (13) with an elastomeric material.

7. A set of prefabricated parts as claimed in Claim 6, characterised in that each seal (13) consists of a filling tube (14) embedded in an elastomer (1 5).

8. A set of prefabricated parts according to any one or more of Claims 1 to 7 and substantial!y as described with reference to the accompanying drawings.