Schrammbord
A curb is a protective device made of wood, concrete, asphalt or steel to secure road users or workplaces on or on roads.
Use and nature
A curb serves to separate the traffic area and the work area, the separation of different types of traffic (e.g. motor vehicle and pedestrian) or the demarcation as a lane divider and has a wheel-repellent effect. The height of the curb depends on the place of use. It is 7 cm to 20 cm. The edges on the front face are usually broken.
If a curb is used on bridges, the structure is as follows: A bitumen waterproofing membrane is placed over the base concrete so that no moisture can penetrate the structure. To protect the bitumen sheeting, a layer of mastic asphalt and then the top layer is applied. The visible concrete part of the curb is called the cap.
Schrammborde can also be found on motorway bridges, where they serve the safety of road users so that they do not stray from the road. The curb is a finishing element to the edge of the bridge.
Renovation in the event of moisture damage
In order to avoid permanent damage to structures / bridges, the bitumen layer may have to be renewed if moisture penetrates. To do this, part of the cap is cut off so that the cover and protective layer can be removed more easily. Then the bitumen layer is laid again and moved a little upwards on the wedge created in the cap in order to achieve the highest possible seal.
Norms and standards
- Additional technical contract conditions and guidelines for safety work at workplaces on roads (ZTV-SA)
See also
Individual evidence
- ↑ Gerhard Mehlhorn (Ed.): Handbook Bridges: Designing, Constructing, Calculating, Building and Receiving . Springer DE, 2010, ISBN 3-642-04422-0 , p. 961 .