All structural boundaries which are defined by a structure must be shown by a thick line. The thick line must relate to the face or edge of a permanent structure.
What is acceptable as a structural boundary?
- The face of a wall of a building.
- The face of a free standing wall.
- The edge of a concrete slab.
- The edge of a roof.
- The edge of a balcony, terrace or patio etc.
- Chain link mesh which is fixed between concrete columns or walls and ceilings and floors.
- Edge or face of kerbing.
In some case it may be beneficial to add a note to the thick line depicting a boundary so there is no confusion regarding what it represents. Some examples are as follows:
- Edge of carport roof.
- Western edge of concrete kerb.
- Southern face of wall.
- South-western corner of column.
What is unacceptable as a structural boundary?
- Edge of pavers which are not permanently fixed.
- Natural boundaries.
- Fixtures or appliances (air conditioners, hot water services, and gas or water meters).