Above-ground decay hazard zones

Geographical areas in Queensland are allocated 1 of 4 levels of decay potential for timbers used in above-ground applications. The areas are rationalised to Local Government Area boundaries.

Geographical areas in Queensland are allocated 1 of 4 levels of decay potential for timbers used in above-ground applications. The areas are rationalised to Local Government Area boundaries. See Decay hazard zones guide and map.


Below are a list of values users can choose for this field group.

  • Ag:A - Above-ground decay hazard zone A; least potential for decay.
  • Ag:B - Above-ground decay hazard zone B; lower potential than zone Ag:C and greater potential than zone Ag:A for above-ground decay.
  • Ag:C - Above-ground decay hazard zone C; lower potential than zone Ag:D and greater potential than zone Ag:B for above-ground decay.
  • Ag:D - Above-ground decay hazard zone D; greatest potential for decay.