Survey marker
Under demarcation (or stabilization) is understood in surveying and geodesy, the permanent placing or attaching a measuring mark for a fixed point or other survey point.
In contrast to the demarcation boundary points abgemarkt - even if in some states, Austria and Switzerland, the technical introduction of the boundary markers is also denoted by demarcation.
Widely visible clearly defined structural elements ( so-called high points) can survey points signal; this therefore must not be marketable. Examples of these are:
- Steeple - cross or knob ( ball under the tower cross)
- Pyramid or Triangulationssäule, summit cross ( the net first order)
- Rod signal (5-10 cm thick, 3-5 m high metal tube with high-contrast target )
Other examples of permanent demarcation:
- Cornerstone of trigonometric points
- Pillar height for fixed points
- Height of tower bolt or bolts ( on stable walls, stable buildings such as steeples )
- Height mark in stable buildings
- Iron pipe with cap
- Fork point (double mark on walls )
- Nagel ( in various materials )
- Bolts ( in solid surfaces like concrete or asphalt)
- Tiller
- Cross chisel, rock cross.
- Plastic brand, also impact brand - this is a cast made of artificial stone head in a metal anchor (often barbed ) cast. Suitable for soft floors.
Examples in Mine Surveying:
- Console or bolts in the shock or expansion
- First point
Examples of a non-permanent, temporary demarcation:
- Eccentric - in view dead spaces
- Wooden peg with nail - for example stakeout or to better locate a measuring point.
- Carrot - a plastic wedge in the form of a carrot being hit in soft ground and later removed.
Examples of a temporary signaling a demarcation:
- Ranging Pole - at almost any measurement, even in the bar stand ( temporarily at measuring points )
- Mire ( usually an illuminated reference direction )
See also: demarcation, stakeout
- Survey Point
- Markscheidewesen