GB2208884A

GB2208884A - Speed reducing hump drainage channel

Info

Publication number: GB2208884A
Application number: GB8719634A
Authority: GB
Inventors: Michael David Silk
Original assignee: LONDON BOROUGH OF NEWHAM
Current assignee: LONDON BOROUGH OF NEWHAM
Priority date: 1987-10-05
Filing date: 1987-10-05
Publication date: 1989-04-19
Anticipated expiration: 2007-10-05
Also published as: GB8719634D0; GB2208884B

Abstract

A speed reducing hump drainage channel has a base through which water from the adjacent gutter or highway channel flows. At each end of the drainage channel are apertures conforming to the shape of the speed reducing hump, which allows water in the kerbside channel to follow the existing highway drainage route. Access to the interior of the channel for maintenance is arranged through a movable or removable lid. <IMAGE>

Description

SPEED REDUCING HUMP DRAINAGE CHANNEL This invention relates to a drainage channel for speed reducing humps specified for use on the public highway, but could be used for other hump shapes not confonning with the shape-specified for the public highway.

Speed humps are a recognised way of reducing the speed of wheeled vehicles.

The cross section of a speed hump acceptable on the public highway is given in Department of Transport (DIp) Advice Note TA/36/83.

The installation requirements established by the DIP require that the speed reducing hump should have a continuous uniform cross section from one kerb face to the other kerb face of the highway where it is situated. When speed reducing humps are placed on a road, the vertical highway alignment invariably rises or falls fran the hump location site and unless up to four conventional road drainage gulleys are provided at the corner of each speed reducing hump adjacent to the kerb, ponding of rainwater occurs. This is clearly undesirable fran the point of view of road safety and the convenience of pedestrians. The cost of providing conventional drainage can be very high, and installation can be time consuming and disruptive.

According to the present invention there is provided a U-shaped channel, which can be placed adjacent to the kerb, flush with existing level of the gutter or drainage channel. This allows any water in the channel to pass the speed reducing hump. The drainage channel is constructed in such a form that the curved top surface can be lifted for cleaning. At each end of the Drainage Channel are apertures to allow the water in the adjacent nt gutter to enter the U-shaped channel. The drainage channel can be fixed to the road surface by a number of means.

A specific embodiment of the invention will now be described by way of an example with reference to the accanpanying drawing in which: Figure 1 shows a perspective, with the Drainage Channel in position and part of the top surface lifted as if for cleaning; Figure 2 shows an elevation giving the profile; Figure 3 shows a typical cross section showing how the U-shaped channel and lid relate; Figure 4 is a plan Figure 5 is a plan showing alternative drainage apertures; Figure 6 shows how the top surface could be made removable in a different way.

Referring to Figure 1 the Drainage Channel consist of a U-shaped Metal Channel Base 1, with sides made to the profile of the speed reducing hump. At each end of the channel are Apertures 2 to allow the water into the channel. This is shown on the drawing as a number of metal 'fins', of the same profile as the speed reducing hump, but could also be made of heavy gauge perforated metal sheet. (See Figure 5). The intention is to ensure that pedestrians or cyclists do not get trapped in the apertures.

The U-shaped channel can be held down by fixings 3 in a number of ways amongst which are (a) shear connectors welded to the underside and set in wet concrete or similar at the site (b) the use of proprietory bolts (eg 'Rawlbolts') in pre drilled holes passing through clearancevholes drilled in the Base (c) the use of priority screws in pre-drilled holes passing through holes in the Base (d) the use of proprietory nails (eg 'Hilti') percussively driven into the road through holes in the Base.

The top surface of the Drainage Channel conforms to the specified hump shape and could be formed either by two identical, inverted U-shaped channels or Lids 4 hinged at their inner ends, or by having part or all of the curved top surface removable. The hinged Lids would need a Pivot 5. This could be four bolts screwed into the side of the Base or sane other similar arrangement. The end of each Lid remote from the Pivot would need to be fixed down in use to avoid causing a nuisance to road users. This could be by a suitable bolt 6 screwed into a tapped hole in the Base or a rotating locking pin operated by a special key. If the top surface were to be part or totally removable then similar holding down devices would need to be located along its length.

Claims

1 A Speed Reducing Hump Drainage Channel comprising a u-shaped base, drainage apertures, fixing down devices and a top surface conforming with the shape of the humps to enable road surfaces adjacent to speed reducing humps to be drained without providing any additional form of conventional road drainage.

2 A speed reducing hump drainage channel as claimed in Claim 1 wherein part of all of the top surface of the channel can be removed for cleaning purposes.

3 A speed reducing hump drainage channel as claimed in Claim 1 wherein part or all of the top surface of the channel can be hinged up for cleaning purposes.

4 A speed reducing hump drainage channel as claimed in Claim 1 or Claim 2 or Claim 3 wherein the top surface of the channel can be fixed in normal use by a screwed bolt or locking device.

5 A speed reducing hump drainage channel as claimed in Claim 1 wherein the drainage apertures at the ends of the channel could take the form of slots or holes in its upper surface of the speed reducing hump.

6 A speed reducing hump drainage channel as substantially described herein with reference to Figures 1-6.