Seven commercial timbers used in construction in Queensland are considered to be bushfire-resisting, where the cross-section thickness of the member is at least 18 mm thick:
|Standard trade name||Botanical name|
|ash, silvertop||Eucalyptus sieberi|
|gum, red, river||Eucalyptus camaldulensis|
|gum, spotted||Corymbia maculata, C. henryi, C. citriodora|
|ironbark, red||Eucalyptus sideroxylon|
|kwila (merbau)||Intsia bijuga, I. palembanica|
These timbers have been tested and assessed against the criteria specified in AS 3959-2009-Construction of buildings in bushfire-prone regions, incorporating the amendments for fire-retardant-treated timbers.