6.4 Horizontal and vertical extent

The geographic extent of land shall be recorded in the number of dimensions necessary for the requirement.

Where a two-dimensional geometry is used to represent a three-dimensional object, the record shall include a stratum, level, depth, height, building part or other description sufficient to distinguish the relevant volume.

The organisation shall identify vertical separation where a requirement or right applies differently to:

the surface;

subsoil or a defined subsurface layer;

mines or minerals;

airspace;

a floor, unit or part of a building or structure; or

another defined stratum.

An overlapping two-dimensional footprint shall not be treated as a spatial conflict where the relevant objects occupy separate vertical strata.