DE20305260U1 - Drainage channel bricks located under array of co-linear road paving blocks - Google Patents

Abstract

A drainage channel is located under an array of co-linear road paving blocks. The channel is assembled from a line of U-shaped bricks (2) with sidewalls (4) and a base (3) formed as a single piece. The base (3) extends slightly beyond the uprights, leaving a gap between the uprights of adjacent bricks.

Description

-3-Dipl.
- Ing. (FH) Reiner Roth, DE - 66564 Ottweiler

Description Drainage channel

The invention relates to a gutter for draining paving stone surfaces comprising a plurality of linearly arranged gutters in a U-shape, a plurality of linearly arranged cover stones with spacers to achieve transverse joints, wherein the cover stones are arranged above the gutters, and sealing/damping strips which are arranged on the upper sides of the gutters and on which the cover stones rest.

On the one hand, drainage channels have the task of collecting surface water, draining it and leading it into the sewer system so that the paved areas can be used optimally and there is no risk of aquaplaning. On the other hand, they allow the surface water to seep away, which relieves the burden on the sewer system.

The drainage channel should be designed in such a way that shear forces caused by driving on it do not cause damage to the channel.

EP 1 234 913 A2 discloses a drainage channel which consists of a plurality of linearly arranged U-shaped gutters, a plurality of linearly arranged cover stones with spacers to achieve transverse joints, the cover stones being arranged above the gutters, and sealing/damping strips which are arranged on the upper sides of the gutters and on which the cover stones rest.

The generic term was formed from this writing.

This document describes two possibilities for the design of a gutter.

In the first option, the gutters are grouted with mortar at the joints in the traditional way, resulting in a gutter that is sealed to the ground.

This channel drains completely via the sewer system. There is no proposed solution for draining surface water into the ground in the form of seepage.

In the second option, floor joints are arranged between gutters that are joined together. The gutters are preferably sealed at the sides (i.e. in the area of the U-legs and the side floor) with mortar or sealing elements, while in the floor area there are joints through which the water seeps into the bedding material or soil.

Since infiltration via floor joints is proposed, there is no possibility of integrating the channel into a concrete foundation in a way that prevents it from shifting in both the vertical and horizontal directions.

This solution is not practical, especially for areas that can be driven on, as enormous forces occur in both horizontal and vertical directions when used, particularly by heavy goods vehicles, and would therefore cause the gutters to shift against each other. The bonding of the gutters to the sides would also fail in this case.

To ensure that the cover stone does not lie directly on the gutter, two sealing/damping strips are used on this gutter, which are arranged on the top of the gutter. The sealing/damping strips seal the joints and dampen noise transmission (clacking from stone to stone when driving over). However, the shear forces that occur when driving over the cover stones are not absorbed by the sealing/damping strips, so that the U-legs of the gutters are subjected to tensile stress. This poses a risk of the U-legs breaking.

The invention is based on the object of developing a drainage channel that collects surface water, drains it and leads it into the sewer system so that the paved area can be used optimally and there is no risk of aquaplaning and, on the other hand, enables the surface water to seep away, which relieves the load on the sewer system.

The drainage channel should be designed in such a way that the shear forces caused by driving on it do not lead to damage to the channel.

These objects are achieved with the drainage channel described in the claims.

The invention will now be explained in more detail with reference to the drawings.

Show it

Fig. 1, 2 and 3 each show a gutter according to the invention in perspective,

Fig. 4 and 5 a vertical section through a sliding profile which is mounted above a

U-leg of a gutter,

Fig. 6 a vertical section through a cover stone, which is placed on a

sliding profile, which is fixed on a U-leg of a gutter,

Fig. 7 a plan view of cover stones laid next to each other,

which are placed over the U-legs of the gutters,

Fig. 8 is a perspective view of a channel according to the invention,

Fig. 9 a cross-section of an installed channel in the area of

Gutter projections.

In Fig. 1 to 3, a gutter according to the invention is shown in perspective.

In Fig. 1 it can be seen that in the longitudinal direction of the gutter (2) the U-bottom (3) protrudes in front of the U-legs (4) on one side and thus forms a lower projection (5) and on the other side the U-legs (4) and U-bottom (3) are arranged flush.

In Fig. 2 and 3 it is shown that in the longitudinal direction of the gutter (2) on one side the lower part of the U-bottom (3a) protrudes in front of the lower parts of the U-legs (4b) and the upper part of the U-bottom (3b) and thus forms a lower projection (5) and on the other side the U-legs (4) and U-bottom (3) are arranged flush.

It can also be seen that in the longitudinal direction of the gutters (2), the two upper parts of the U-legs (4a) protrude on one side in front of the two lower parts of the U-legs (4b) and the upper part of the U-bottom (3b), thus forming an upper projection (6) which is the same size as the lower projection (5) in the area of the U-bottom (3).

Similarly, in the longitudinal direction of the gutters (2), the two upper parts of the U-legs (4a) can protrude on one side in front of the two lower parts of the U-legs (4b) and thus each form an upper projection (6) which is the same size as the lower projection (5) of the U-bottom (3).

In Fig. 3 it is shown that the lower part of the U-bottom (3a) in the region of the projection (5) has a flat middle part when viewed in the transverse direction and has a gradient to each side.

Likewise, a gradient can also be incorporated from the middle to both sides.

The U-shaped base (3) can also have a flat central part in the area of the projection (5) in the transverse direction and have a gradient to each side or have a gradient from the center to both sides.

Fig. 4 and 5 show a vertical section through a sliding profile arranged over a U-leg of a gutter.

The sliding profile (7) in Fig. 4 describes an air space which is divided into several chambers by vertical bars.

The sliding profile in Fig. 5 also describes an air space which is not divided by cross bars.

The sliding profiles in Fig. 4 and 5 represent a good solution, since they are hollow profiles that transfer almost no forces to the upper side of the U-legs (4).

A sliding takes place in the profile itself.

Fig. 6 shows a vertical section through a cover stone resting on a sliding profile which is fixed on a U-leg of a gutter.

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The sliding profile (7) has a horizontal section which is extended upwards on one side by means of studs (8).

This is a very simple design of a sliding profile (7). Sliding the cover stone (12) is made possible by the studs (8). If the spaces between the studs (8) are filled with sand (13) and the cover stone (12) is then placed on top, the cover stone (12) slides perfectly and only small forces are transferred to the U-legs (4), which can absorb these forces without any problems.

In Fig. 5 and 6 it can be seen that a vertical stem (9) is formed on the underside of the sliding profile (7) and has a barb (10) formed on it. Several barbs (10) can also be formed on the stem (9).

It can be seen that on the upper side of a U-leg (4) of the gutters a groove (11) is arranged in the longitudinal direction, which serves to fix and accommodate the sliding profile (7).

The groove (11) may be rectangular, square or trapezoidal in cross-section, with the shorter of the parallel trapezoid sides lying on the surface of the gutter.

It is clear that the vertical stem (9) with the molded barbs (10) of the sliding profile (7) engages in the groove (11) of the U-legs (4) and thus fixes the sliding profile.

Fig. 7 shows a top view of cover stones laid next to each other, resting over the U-legs of the gutters.

The spacers (14) on the transverse sides (15) of the cover stones (12) only come to rest in the area of the U-legs (4) arranged underneath.

On each transverse side (15) of a cover stone (12), two spacers (14) are formed in the sense of rotational symmetry such that a spacer (14) of a cover stone (12) is located in the immediate vicinity of a spacer (14) of the adjacent cover stone (12).

ti It

Paving stones (16) are shown on one side next to the cover stones (12). If the paving surface is now filled with sand, no joint filling material can get into the transverse joints of the cover stones (12) due to the position of the spacers (14) of the cover stones (12).

Fig. 8 is a perspective view of a gutter according to the invention. Only the cover stones (12) which border a paved area with paving stones (16), the sliding profiles (7) and the gutter stones (2) are shown. The installation materials have not been shown for better clarity. The paved area, which has a gradient towards the gutter (1), thus directs the surface water to the gutter (1). The water flows from the cover stones (12) into the gutter stones (2) via the open transverse joints between the cover stones (12).

The gutters (2) arranged in a row form lateral drainage slots (17) through the one-sided projections (5, 6) through which the water can penetrate to the outside.

The lower projection (5) has a slope towards the sides so that the water can be drained away in this way.

The lower projection (5) is designed to be lower than the U-bottom (3).

When joining the gutters (2) together, a sealing profile can now be inserted into the groove thus formed in the transverse direction, which is located below the U-shaped bottom (3), which seals the joint between the adjacent gutters (2) and the floor. The sealing profile should be designed in such a way that it creates a seal at the level of the U-shaped bottom (3) or slightly lower.

A second possibility is to glue the front side of the lower projection (5) to the front side of the adjacent U-bottom (3) in order to achieve a tight joint downwards.

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The channel (1) according to the invention can be laid without a gradient. In the case of smaller sealed paving areas with little drainage capacity, the channel (1) does not even require a connection to the sewer system.

By means of a bore hole, it is possible to create an opening in the U-shaped base (3) of a gutter (2). A drainage pipe can be installed from below through the concrete foundation into the opening so that the inlet opening of the drainage pipe is located just below the cover stone (12). This ensures that water initially in the gutter (1) is directed to the outside area of the gutter (1).

Only when this drainage fails (when there is no longer any water storage space outside the gutter (1) or when infiltration is no longer possible when the soil is completely filled with water) does the water rise in the gutter (1) and is drained into the sewer system via the drainage pipe.

Fig. 9 shows a cross-section of an installed gutter in the area of the projections of the gutter stones.

The gutter (2) is firmly installed in a concrete foundation (18) underneath, which rests on the stable ground or an installed base layer.

The sliding profile (7) is located on the upper side of the U-legs (4) of the gutters (2).

The drainage slots (17) create an opening to the outside of the gutters

After the installation of the concrete foundation (18) and the gutters (2), a gravel layer (19) can now be built on both sides of the gutters (2), which protrudes just above the drainage slots (17).

The drainage slots (17) have a width of approx. 5 to 7 mm.

The grain composition of the gravel filling (19) consists of smallest grains of 8 mm to largest grains of 32 mm.

This ensures that the gravel cannot get into the gutter and that the drainage slots (17) are not blocked.

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Now a water-permeable filter fleece (20) is installed, which protects the gravel filling (19) from the outside and rests on the upper wall of the U-legs (4) and closes the sliding profile (7) at the top.

The base layer (gravel) (21) is then installed next to the gravel (19). The bedding material (22) for the paving stones (16) is then installed on the base layer (21) and over the gravel (19). The cover stones (12) are placed on the sliding profiles (7), which are covered with filter fleece (20), and the paving stones (16) are installed in the bedding material (22) and covered with sand.

It can be seen that the bedding material (22) and the fine particles of the base layer (21) do not get into the gravel fill (19) due to the built-in filter fleece (20). However, the filter fleece (20) allows water to escape unhindered from the gravel fill (19) into the base layer (21).

It is now clear that the surface water finds additional water storage space in the area of the gravel fill (19), which expands in the base layer (21) before it can seep into the soil.

This is of great importance because in the event of heavy rainfall the gutters (2) are not dimensioned sufficiently to collect water alone.

Since the transverse joints of the gutters (2) are tightly closed at the bottom, no frost damage can occur during frost periods, which could lead to spalling or chipping.

The channel (1) rests securely on the lower concrete foundation (18).

k · • ·

Claims (12)

1. Gutter for draining paving stone surfaces made of a plurality of linearly arranged gutters in a U-shape, a plurality of linearly arranged cover stones with spacers to achieve transverse joints, the cover stones being arranged above the gutters, and sealing/damping strips which are arranged on the upper sides of the gutters and on which the cover stones rest, characterized in that, viewed in the longitudinal direction, on one side of the gutters ( 2 ) the U-bottom ( 3 ) or the lower part of the U-bottom ( 3a ) protrudes in front of the U-legs ( 4 ) or in front of the U-legs ( 4 ) and the upper part of the U-bottom ( 3b ) and thus forms a lower projection ( 5 ) and on the other side the U-legs ( 4 ) and U-bottom ( 3 ) are arranged flush. 2. Gutter according to claim 1, characterized in that, viewed in the longitudinal direction of the gutters ( 2 ), the two upper parts of the U-legs ( 4 a) protrude on one side in front of the two lower parts of the U-legs ( 4 b) or in front of the two lower parts of the U-legs ( 4 b) and the upper part of the U-bottom ( 3 b) and thus each form an upper projection ( 6 ) which is the same size as the lower projection ( 5 ) in the region of the U-bottom ( 3 ). 3. Channel according to claims 1 or 2, characterized in that the U-bottom ( 3 ) or the lower part of the U-bottom ( 3a ) in the region of the projection ( 5 ) has a flat central part when viewed in the transverse direction and has a gradient to the side or has a gradient from the center to both sides. 4. Gutter according to one of claims 1 to 3, characterized in that the sealing/damping strip is designed as a sliding profile ( 7 ). 5. Channel according to claim 4, characterized in that the sliding profile ( 7 ) defines an air space which can be divided into several chambers by vertical bars. 6. Channel according to claim 4, characterized in that the sliding profile ( 7 ) has a horizontal section which is expanded upwards on one side by means of knobs ( 8 ). 7. Gutter according to one of claims 4 to 6, characterized in that a vertical stem ( 9 ) is formed on the underside of the sliding profile ( 7 ), which has one or more barbs ( 10 ) formed thereon. 8. Gutter according to one of the previously described claims, characterized in that on each upper side of the U-legs ( 4 ) of the gutters a groove ( 11 ) is arranged in the longitudinal direction, which serves to fix and receive the sliding profile ( 7 ). 9. Gutter according to claim 8, characterized in that the groove ( 11 ) is rectangular, square or trapezoidal in cross section, the shorter of the parallel trapezoid sides lying on the surface of the gutter ( 2 ). 10. Gutter according to one of the preceding claims, characterized in that the vertical stem ( 9 ) with the molded barbs ( 10 ) of the sliding profile ( 7 ) engages in the groove ( 11 ) of the U-legs ( 4 ). 11. Gutter according to one of the previously described claims, characterized in that the spacers ( 14 ) on the transverse sides ( 15 ) of the cover stones ( 12 ) come to rest only in the region of the U-legs ( 4 ) arranged underneath. 12. Gutter according to claim 11, characterized in that on each transverse side ( 15 ) of a cover stone ( 12 ) two spacers ( 14 ) are formed in the sense of rotational symmetry such that in each case a spacer ( 14 ) of a cover stone ( 12 ) comes to lie in the immediate vicinity of a spacer ( 14 ) of the adjacent cover stone ( 12 ).