7.3 Detail Mapping for Local Plan
Level of expertise required for this Chapter: Planner; specifically for LUPMIS @ TCPD
7.3.1 Concept of Detail Mapping
If land use planning has to be done in already built-up land, for example in towns, current structures like buildings, roads, etc have to be considered.
Principally, there are two options:
Either, to plan ‘around’ existing structures,
Or, to consider demolishing them where necessary.
To express land use planning recommendations accordingly, these structures have to be mapped in a large-scale, ‘detailed mapping’. In most cases, this will be done only for rather small areas.
Recommended mapping scale is 1:2000. High-resolution imagery or orthophotos are necessary. Photography or imagery must have a resolution of 1 m or better. Remember: 1 cm at the map is equivalent to 20 m on ground at 1:2000.
Geographical accuracy and minimum mapping unit:
Geographical accuracy: 5 mm = 10 m (at 1:2000)
Minimum mapping units: 5 x 5 mm = 10 x 10 m. Smaller units do not have to be identified.