GB2207163A

GB2207163A - Improvements in or relating to kerbs

Info

Publication number: GB2207163A
Application number: GB08716591A
Authority: GB
Inventors: Graham Geoffrey Cannon
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-07-14
Filing date: 1987-07-14
Publication date: 1989-01-25
Anticipated expiration: 2007-07-14
Also published as: GB8716591D0; GB2207163B

Abstract

A grid 12 is connected to a kerb 10 by casting the concrete kerb around an edge region 14 of the grid. The kerb 10 is retained in place by pulling the grid 12 away from the kerb in order to tension the grid and passing three nails 22 with washers 24 into the road layer 18 through three spaced openings in the grid 12. Concrete backing 26 is then cast on top of the grid in order to completely surround that portion of the grid extending between the nails 22 and the kerb 10. A layer of tarmacadam 32 is then located on top of the concrete backing 26 and rolled level with the top of the kerb 34. <IMAGE>

Description

IMPROVEMENTS IN OR RELATING TO KERBS The present invention relates to a method of retaining a kerb element In place and to a kerb member.

Existing kerb members are made of considerable depth and are held In place by digging a channel adJacent to the side of a road and locating a significant portion of the depth of the kerb element in that channel with a small proportion extending above the level of the road surface to provide the kerb thereto. However, because the kerb has to be of significant depth, the amount of material In each kerb is considerable thus making the kerbs expensive to manufacture and bulky to transport.

Furthermore, it Is a very time consuming task to dig the channel for the kerb to rest in, and then to pack in material around the kerb and make the road surface firm and level again.

According to one aspect of the present invention, a method of retaining a kerb element of a kerb member in place comprises locating the kerb element on a supporting surface and securing in place an anchor portion of the kerb member connected to the element and extending to one side of the element In order to help prevent the kerb element from moving in a direction facing away from the other side of a kerb element. Wlth such a method of retaining a kerb element, It can be seen that it Is not necessary to dig a channel Into the road surface and that the kerb element can merely rest on an existing road surface.Thus the kerb element has a depth equal only to the required height of the kerb, thus saving significantly In material for the kerb element, and it is a relatively quick and simple operation to secure the anchor portion In place.

The method may comprise directly securing the anchor portion to a supporting surface which also provides the supporting surface for the kerb element.

The method may comprlse directly securing the anchor portion to the supporting surface at a location remote from the kerb element, and the anchor port Ion may be directly secured to the supporting surface at a pluralIty of locations remote from the kerb element. The anchor port Ion may be directly connected to the supporting surface by fasteners co-operating with the anchor portion, the fasteners extending into the supporting surface.

Alternatively or additionally, the anchor portion may be secured by an anchor weight. The anchor portion may be secured by casting material onto, or around at least a portion of, the anchor portion.

According to another aspect of the present Invent ion a kerb member comprises a kerb element and an anchor portion arranged to extend to one side of the kerb element.

Part of the anchor portion may be arranged to extend Into the kerb element. The kerb member may be formed by casting the kerb element around part of the anchor portion.

At least a part of the anchor portion may be flexible, and at least a part of the anchor portion may comprise a grid.

The anchor portion may be arranged to extend away from the one side of the kerb element at a region located above the supporting surface of the kerb element. The anchor portion may be arranged to extend downwardly from the kerb element away from the kerb element.

The anchor portion may be arranged to extend towards, and be connected to a further kerb element.

The present Invention also includes a kerb element of a kerb member which has been retained according to a method as herein specified.

The present Invention also includes a constructlon Including a kerb member as herein specified or in which the kerb element of a kerb member has been retained by a method as herein specified.

The present invention may be carried Into practice in various ways, but two embodiments will now be described, by way of example, and with reference to the accompanying drawings in which: Figure 1 is a cross-section through a road surface Including a kerb member according to the present Invent ion; Figure 2 is a plan vlew of the kerb member shown in Figure 1, and Figure 3 is a cross-section similar to Figure 1 of a further embodiment of the present Invention.

The kerb member shown in Figures 1 and 2 comprises a kerb 10 and a "Tensar" polymer reInforcing grid 12. The grld 12 Is connected to the kerb 10 by casting a concrete kerb around an edge region 14 of the grid.

An existing carrlageway 16 is resurfaced and has a kerb attached to the edge of It as follows. The old kerb Is removed, and a new road layer 18 is placed over the top of the existing road layer 16 to provide a flat upwardly facing surface 20. The kerb 10 Is then rested on top of the new surface 20, and the grid 12 Is pulled away from the kerb, In order to tension the grid, and held in place by passing three nails 22 with washers 24 Into the new road layer 18 through three spaced openIngs in the grid 12. Alternatively, the kerb 10 can be rested on an existing road surface with the grid belng tensioned and held In place as described above, without necessarily resurfacing a carriageway.

As seen In Figure 1, a fine aggregate concrete backing 26 Is then cast on top of the grid in order to completely surround that portion of the grid extending between the nails 22 and the kerb 10, and In order to cover the free edge 28 of the grid and the nalls 22.

A tradItIonal layer of tarmacadam 32 Is then located on top of the concrete backing 26 and rolled level with the top of the kerb 34.

The tarmacadam 32 and the concrete backing 26 prevent the kerb stone from moving to the right, when vlewed in Figure 1, and the grid 12 helps to prevent the kerb from moving to the left, when viewed in that figure.

The kerbs are particularly useful when constructing an Island on a roadway as the new road layer can be applied over the complete extent of the road, without having to carefully avoid applying the new road layer to the area where the Island is to be located, or without having to subsequently dig up the new road layer, and possibly also a port ion of the existing road layer In order to construct the Island, such as Is required when constructing islands with conventlonal kerbs.

Figure 3 Is a cross-sectlon similar to that shown in Figure 1 of a complete island, and like parts to those shown In Figure 1 and 2 have been given the same reference numeral prefIxed by the number 1.

As shown in Figure 3, the upwardly facing surface 120 Includes a pair of spaced kerbs 110 which are connected together by a flexible grid 112, the opposed edge regions 114 of the grid 112 extending Into each of the kerbs 110.

The island is constructed by placing the kerbs 110 In the position shown, and then casting a fine aggregate concrete backing 126 to completely encompass that portion of the grId extending between the kerbs. A tarmacadam layer 132 can then be placed on top of the concrete backing 126, and rolled flat.

The grids 12 and 112 shown In the drawings extend from the kerbs to which they are connected at a reglon located above the helght of the upwardly facing surface 20 or 120. Thus the force applied by the grids to the kerbs not only helps prevent forces tending to move the kerbs away from the grids along the upwardly facing surfaces, but also provide an opposing moment force to any force attempting to pivot the kerb about Its outwardly facing edge 36 or 136 in contact with the upwardly facing surface 20 or 120.

Claims

CLAIMS.

1. A method of retaining a kerb element of a kerb member In placecomprising locating the kerb element on a supporting surface and securing in place an anchor portion of the kerb member connected to the element and extending to one side of the element in order to help prevent the kerb element from moving In a direction facing away from the other side of the kerb element.

2. A method as claimed in Claim 1 in which the kerb element has a depth equal to the required height of the kerb.

3. A method as claimed in Claim 1 or 2 comprising directly securing the anchor portion to a supporting surface which also provides the supporting surface for the kerb element.

4. A method as claimed In any preceding claim comprising directly securing the anchor portion to the supporting surface at a location remote from the kerb element.

5. A method as claimed in Claim 4 In which the anchor portion Is secured directly to the supporting surface at a plurality of locations remote from the kerb element.

6. A method as claimed In Claim 4 or 5 In which the anchor portion is directly connected to the supporting surface by fasteners co-operating with the anchor portion, the fasteners extending Into the supporting surface.

7. A method as claimed in any preceding claim In which the anchor portion is secured by an anchor weight.

8. A method as claimed in any preceding claIm in which the anchor portion is secured by casting material onto the anchor portion.

9. A method as claimed in any preceding in which the anchor portion Is secured by casting material around at least a part of the anchor portion.

10. A method of retaining a kerb element of a kerb member substantially as herein descrlbed with reference to, and as shown In the accompanying drawings.

11. A kerb member comprising a kerb element and an anchor portion arranged to extend to one side of the kerb element.

12. A kerb member as claimed in Claim 11 in which a part of the anchor portion extends Into the kerb element.

13. A kerb member as claimed In Claim 12 in which the kerb element is cast around part of the anchor portion.

14. A kerb member as claimed In any of Claims 11 to 13 in which at least a part of the anchor portion is flexible.

15. A kerb member as claimed in any of Claims 11 to 14 In which at least a part of the anchor portion comprlses a grid.

16. A kerb member as claimed in any of Claims 11 to 15 In which the anchor portion extends away from the one side of the kerb element from a region located above what, in use, is the supporting surface of the kerb element.

17. A kerb element as claimed in Claim 16 in which the anchor portion extends downwardly from the kerb element away from the kerb element.

18. A kerb member as claimed In any of Claims 11 to 17 in which the anchor portion extends towards, and is connected to a further kerb element.

19. A kerb member substantially as herein described with reference to, and as shown in the accompanying drawling.

20. A kerb member as claimed in any of Claims 11 to 19 in which the kerb element has been retained by a method as claimed in any of Claims 1 to 10.

21. A construction Including a kerb member as claimed in any of Claims 11 to 19.