The following information relates to rules 7.3 and 7.4 and the types of non-boundary marks used in a cadastral survey.
It is essential that the framework of non-boundary marks and boundary points link together. This enables the boundary positions to be correctly reinstated in the future.
Rules 7.3 and 7.4 specify:
- the attributes and location of marks that make up the network of non-boundary marks, and
- the proximity of survey network marks to boundary points.
Types of non-boundary marks
- Permanent reference marks (PRMs)
- Witness marks
- Other marks used in the survey that are not boundary marks. These include traverse marks and similar marks used to facilitate the survey.
The Rules do not require the surveyor to place or use traverse marks. If such marks are used, they must be recorded in the CSD [r 9.6.2(a)] and meet the same accuracy requirements as PRMs and witness marks [r 3.1]. This is because they are treated as non-boundary marks.