Contractors can only undertake the relevant classes or items of minor works for which they have been registered.
Mesh fences or metal railings on a roof
Erection/Alteration
Class I
1.56
Erection/Alteration
- Height of the structure, including any feature at its top
≤ 5m - If the lower part is a solid fence wall,
- Height of the wall
≤ 1.5m
- Height of the wall
Class II
2.56
Erection/Alteration
- Height of the structure, including any feature at its top
≤ 2.5m - If the lower part is a solid fence wall,
- Height of the wall
≤ 1.1m - Thickness of the wall
< 100mm - Density of the wall
≤ 650kg per m3 - Aggregate length of additional wall per m2 of the roof area
≤ 0.3m
- Height of the wall
- Not used as a protective barrier
- Thickness of the roof slab supporting the structure ≥ 150mm
Class III
3.56
Erection/Alteration
- Height of the structure, including any feature at its top
≤ 1.5m - If the lower part is a solid fence wall,
- Height of the wall
≤ 300mm - Thickness of the wall
< 100mm - Density of the wall
≤ 650kg per m3 - Aggregate length of additional wall per m2 of the roof area
≤ 0.3m
- Height of the wall
- Not used as a protective barrier
- Thickness of the roof slab supporting the structure ≥ 150mm
Repair
Class II
2.62
Repair
- Height of the structure, including any feature at its top
≤ 5m - If the lower part is a solid fence wall, the height of the wall
≤ 1.5m - Not used as a protective barrier
Class III
3.62
Repair
- Height of the structure, including any feature at its top
≤ 2.5m - If the lower part is a solid fence wall, the height of the wall
≤ 1.1m - Not used as a protective barrier
Removal
Class II
2.65
Removal
- Height of the structure, including any feature at its top
≤ 5m - If the lower part is a solid fence wall, the height of the wall
≤ 1.5m
Class III
3.65
Removal
- Height of the structure, including any feature at its top
≤ 2.5m - If the lower part is a solid fence wall, the height of the wall
≤ 1.1m