Contractors can only undertake the relevant classes or items of minor works for which they have been registered.
Ventilation duct works or associated supporting frames inside a building
Erection/Alteration
Class I
1.46
Erection/Alteration
- Any metal ventilation duct or associated supporting frame is located inside a building
- Smallest cross-sectional dimension of the duct
> 900mm; and
Largest cross-sectional dimension of the duct
> 1800mm
Class II
2.46
Erection/Alteration
- Any metal ventilation duct or associated supporting frame is located inside a building
- Smallest cross-sectional dimension of the duct
> 900mm; and
Largest cross-sectional dimension of the duct
≤ 1800mm