The following information relates to making a horizontal connection to a cadastral survey network mark under rules 4.2, 16.4(b) and 17.1(d)(iii).
A cadastral survey network mark is specified as a New Zealand Geodetic Datum 2000 (NZGD2000) mark of horizontal 6th order or better..
The connection between the new survey and the cadastral survey network mark may be either by field measurement or by the adoption of vectors.
Irrespective of the method used, the survey accuracy standards [r 3.1] must be met and the CSD must include sufficient vectors to verify that this standard has been met [r 8.1(d)].
All field surveys that define a boundary point on a primary parcel being created by the survey must connect to a 6th order or higher cadastral survey network mark if one exists:
- within 500 m for class A,
- within 1000 m for class B, or
- within 2000 m for class C boundary points.
The distances specified are 'as the crow flies'.
The requirement to connect to a 'local' cadastral survey network mark within the distances specified in rule 4.2 applies even if the survey may have also connected to other cadastral survey network marks further away.
A survey for a covenant in terms of rule 16 (Alternative requirements for covenant parcels) or non-primary parcel in terms of rule 17 (Alternative requirements for non-primary parcels) must connect to one or more cadastral survey network marks, irrespective of the distance to such a mark [r 16.4(b) and r 17.1(d)(iii)].
Rule 4.2 does not apply in the case of a cadastral survey that does not define or mark a new primary parcel point. Examples of such surveys include:
- a boundary marking survey (refer to Survey types for boundary marking),
- the creation of non-primary parcels only as in the case of an easement survey,
- the creation of a new primary parcel that is the same shape as an existing primary parcel.
Note that connection is required for a survey for a covenant created in terms of rule 16 (Alternative requirements for covenant parcels) or a non-primary parcel in terms of rule 17 (Alternative requirements for non-primary parcels) [r 16.4(b) and r 17.1(d)(iii)].
Surveyors sometimes use coordinates extracted from Landonline for the purpose of calculations. The Rules do not require the coordinates or an origin of coordinates to be provided as part of the CSD.
Survey connection to a network mark and the orientation of survey bearings are two separate issues. A survey that meets the orientation requirements of rule 4.1 need not be connected to a cadastral survey network mark if one is not within the distance requirements of rule 4.2.