Plaster mark
A plaster brand, occasionally plaster strips or Gipsplombe called, is used to break monitoring in buildings . For this purpose, a strip of plaster of paris with a thickness of 1 to 10 mm and a width of 10 to 100 mm is applied across an existing crack or joint on the component surface.
If the component experiences a crack opening or a shifting of the crack after the plaster mark was set, this can be easily verified by visual inspection based on the cracked plaster mark .
Since the plaster mark is a very simple and inexpensive way of monitoring cracks, it is often used in building in existing buildings, in the renovation of old buildings and in the renovation of architectural monuments . Plaster of paris is also used to monitor boulders that pose potential hazards due to their size and location.
When setting the plaster marks, it must be ensured that a suitable substrate is available. The plaster marks should be numbered and marked with the date of creation. In addition, the position of the plaster marks placed should be documented by means of a sketch or a photographic representation.
Crack monitors can serve as an alternative to plaster marks .
