GB2142059A

GB2142059A - Edge restraints for paving systems

Info

Publication number: GB2142059A
Application number: GB08317214A
Authority: GB
Inventors: Colin James Michael Knox
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-06-24
Filing date: 1983-06-24
Publication date: 1985-01-09
Also published as: GB2142059B; GB8317214D0

Abstract

An edge restraint system for a paved area (11) comprising a first series of edge components (13) laid side by side around the perimeter of the paved area (11) and bedded on a sub-base (14). Each edge component (13) has a narrow rectangular top portion, a wide rectangular bottom portion and a trapezium shaped connecting middle portion. Optionally, outside the first series, a second series of similar but inverted components (23) is laid, this having a longitudinal channel (24) for drainage. Outside the second series (23) there is a third series of edge components (33) similar to the first series. <IMAGE>

Description

SPECIFICATION Edge restraints for paving systems The present invention relates to edge restraints for paving systems, that is systems for covering an area of ground with paviors, paving stones or flagstones.

In a commonly known system, paviors are drylaid, bedded on sand. In orderto prevent the surface spreading, edge restraints are provided. The edge restraints comprise bricks laid on edge, bedded on a sub-base of concrete. It is an object of the present invention to provide an edge restraint system for a paved area in which the edge restraints are more firmly located.

According to the invention a edge restraint system for a paved area comprises a series of edge components laid side by side around the perimeter of the paved area and bedded on a sub-base of concrete, the edge components having a comparatively narrow top section adjacent the paved area and a comparatively wide bottom section.

This provides increased adhesion for the edge restraint system without the necessity to increase the number of edge components.

Preferably, part of the bottom section extends beneath the paved area. This arrangement lessens the likelihood of the edge components "tipping over" outwards.

One of the drawbacks of existing systems is that no provision is made for drainage of the paved area, so that rain water simply runs over the side of the edge restraints.

It is therefore a further object of the invention to provide an edge restraint system incorporating a surface drainage system.

Preferably, therefore, the system further comprises a series of second edge components laid side by side around the perimeter of the first series of edge components, the second edge component having a comparatively narrow bottom section and a comparatively wide top section, the top surface of the second edge components being formed with a channel section so that when laid side by side, the channel sections form a channel along the perimeter.

Thus, the channel can lead rain water etc. away from the paved area so that it can be subsequently directed to a drain or the like.

Preferably, the components of the two series have complementary profiles so that they can be joined conveniently with a layer of concrete. Preferably, the first and second components have the same crosssectional shape apart from the channel section in the second components. That shape may conveniently be a narrow rectangular portion, a wide rectangular portion of substantially the same depth and a trapezium-shaped portion joining the two rectangular portions.

Preferably, a third outer series of edge components similar to the first series is provided, these components being laid side by side outside the series of second components.

The invention may be carried into practice in various ways and some embodiments will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is an isometric sectional view of an edge restraint system in accordance with the invention; and Figure 2 is a similar view of a further embodiment.

A paving system shown in Figure 1 comprises a paved area, of which one pavior 11 is shown, an edge restraint system 12 of which two edge components 13 are shown, and a concrete sub-base 14. The paviors 11 are bedded on sand 15 while the edge components 13 are bedded on the concrete sub-base 15, and are joined together by a mortar joint 16.

Each edge component 13 has a constant crosssectional shape comprising a relatively short rectan gulartop section 17 100mm long and 50mm deep, and a relatively long, rectangular bottom section 18 200mm long and 40mm deep. These are joined together by a trapezium-shaped central section 19 50mm deep and inclined at 45 . Thus, the top section 17 of each end component 13 abuts one ofthe paviors 11 while the bottom section 18 is bedded on the sub-base 14, extending underneath the pavior 11.

The outline 20 shows the contour of the surrounding landscape.

Turning now to Figure 2, the system shown is similar to that of Figure 1 in that it includes paviors 11, edge components 13 and a sub-base 14, however, a further series of edge components 23 is provided. These components 23 are similar to the edge components 13 but are inverted and the uppermost surface in each case in provided with a channel section 24 running from side to side thus defining a channel running along the perimeter. This further series of edge components 23 is joined to the sub-base 14 and to the adjacent inner series of edge components 13 by a mortarjoint 26. It will be seen that the dimensions of the edge components 13,23 are such that the mortar joint 26 is of substantially constant thickness.

The channel formed serves as a surface drainage channel and can be connected to any convenient means for directing away collected water to a drain orthe like.

In order to support the edge components 23 a further series of outermost edge components 33 is located outside the components 23.

1. An edge restraint system for a paved area comprising a first series of edge components laid side by side around the perimeter of the paved area and bedded on a sub-base, the edge components having a comparatively narrow top portion adjacent the paved area and a comparatively wide bottom portion on the sub-base.

2. A system as claimed in Claim 1 in which the bottom portions of the components extend beneath the paved area.

3. A system as claimed in Claim 1 or Claim 2 in which each edge component has a generally rectangular-sectioned top portion and a generally rectangular-sectioned bottom portion connected by a generally trapezium-sectioned middle portion.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Edge restraints for paving systems The present invention relates to edge restraints for paving systems, that is systems for covering an area of ground with paviors, paving stones or flagstones. In a commonly known system, paviors are drylaid, bedded on sand. In orderto prevent the surface spreading, edge restraints are provided. The edge restraints comprise bricks laid on edge, bedded on a sub-base of concrete. It is an object of the present invention to provide an edge restraint system for a paved area in which the edge restraints are more firmly located. According to the invention a edge restraint system for a paved area comprises a series of edge components laid side by side around the perimeter of the paved area and bedded on a sub-base of concrete, the edge components having a comparatively narrow top section adjacent the paved area and a comparatively wide bottom section. This provides increased adhesion for the edge restraint system without the necessity to increase the number of edge components. Preferably, part of the bottom section extends beneath the paved area. This arrangement lessens the likelihood of the edge components "tipping over" outwards. One of the drawbacks of existing systems is that no provision is made for drainage of the paved area, so that rain water simply runs over the side of the edge restraints. It is therefore a further object of the invention to provide an edge restraint system incorporating a surface drainage system. Preferably, therefore, the system further comprises a series of second edge components laid side by side around the perimeter of the first series of edge components, the second edge component having a comparatively narrow bottom section and a comparatively wide top section, the top surface of the second edge components being formed with a channel section so that when laid side by side, the channel sections form a channel along the perimeter. Thus, the channel can lead rain water etc. away from the paved area so that it can be subsequently directed to a drain or the like. Preferably, the components of the two series have complementary profiles so that they can be joined conveniently with a layer of concrete. Preferably, the first and second components have the same crosssectional shape apart from the channel section in the second components. That shape may conveniently be a narrow rectangular portion, a wide rectangular portion of substantially the same depth and a trapezium-shaped portion joining the two rectangular portions. Preferably, a third outer series of edge components similar to the first series is provided, these components being laid side by side outside the series of second components. The invention may be carried into practice in various ways and some embodiments will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is an isometric sectional view of an edge restraint system in accordance with the invention; and Figure 2 is a similar view of a further embodiment. A paving system shown in Figure 1 comprises a paved area, of which one pavior 11 is shown, an edge restraint system 12 of which two edge components 13 are shown, and a concrete sub-base 14. The paviors 11 are bedded on sand 15 while the edge components 13 are bedded on the concrete sub-base 15, and are joined together by a mortar joint 16. Each edge component 13 has a constant crosssectional shape comprising a relatively short rectan gulartop section 17 100mm long and 50mm deep, and a relatively long, rectangular bottom section 18 200mm long and 40mm deep. These are joined together by a trapezium-shaped central section 19 50mm deep and inclined at 45 . Thus, the top section 17 of each end component 13 abuts one ofthe paviors 11 while the bottom section 18 is bedded on the sub-base 14, extending underneath the pavior 11. The outline 20 shows the contour of the surrounding landscape. Turning now to Figure 2, the system shown is similar to that of Figure 1 in that it includes paviors 11, edge components 13 and a sub-base 14, however, a further series of edge components 23 is provided. These components 23 are similar to the edge components 13 but are inverted and the uppermost surface in each case in provided with a channel section 24 running from side to side thus defining a channel running along the perimeter. This further series of edge components 23 is joined to the sub-base 14 and to the adjacent inner series of edge components 13 by a mortarjoint 26. It will be seen that the dimensions of the edge components 13,23 are such that the mortar joint 26 is of substantially constant thickness. The channel formed serves as a surface drainage channel and can be connected to any convenient means for directing away collected water to a drain orthe like. In order to support the edge components 23 a further series of outermost edge components 33 is located outside the components 23. CLAIMS

4. A system as claimed in any preceding claim further comprising a series of second edge component laid side by side around the perimeter of the first series of edge components, the second edge components having a comparatively narrow bottom portion and a comparatively wide top portion, the top surfaces of the second edge components being formed with a channel section so that when laid side by side, the channel sections form a channel at the perimeter.

5. A system as claimed in any preceding claim in which the edge components of the two series have complementary profiles and are joined by a layer of concrete.

6. A system as claimed in Claim 5 in which the edge components of the two series have the same cross-sectional form apart from the channel in those of the second series.

7. A system as claimed in any of Claims 4 to 6 further including a third series of edge components similar to the first series, these components being laid side by side outside the series of second edge components and in which the edge components of the second and third series have complementary profiles and are joined by a layer of concrete.

8. An edge restraint system for a paved area constricted and arranged substantially as herein specifically described with reference to and as shown in Figure 1 or Figure 2 of the accompanying drawings.