Build with timbers summary

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Timber fact sheet

Location details

Building member details

Step, stair risers and treads, fully supported

Environment:
Exposed
Target design life (years):
15
 

Properties for [gum, spotted]

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Standard trade name gum, spotted gum, spotted gum, spotted
Botanical name Corymbia citriodora Corymbia henryi Corymbia maculata
Synonyms Eucalyptus citriodora,
Eucalyptus henryi,
Eucalyptus maculata 		Eucalyptus citriodora,
Eucalyptus henryi,
Eucalyptus maculata 		Eucalyptus citriodora,
Eucalyptus henryi,
Eucalyptus maculata
Origin Queensland-north,
Queensland-central,
Queensland-south 		Queensland-south,
Australia 		Queensland-central,
Queensland-south,
Australia
Schedule Schedule B Schedule B Schedule B
Hardwood Yes Yes Yes
Density (kg/m3) 1010 1010 1010
Durability above-ground (1) (1) (1)
Durability in-ground (2) (2) (2)
Hardness VH VH VH
Joint dry (JD) JD1 JD1 JD1
Joint green (JG) J1 J1 J1
Strength dry (SD) (SD2) (SD2) (SD2)
Strength green (SG) (S2) (S2) (S1)
Bushfire resisting Yes Yes Yes
Lyctine susceptibility (SL) (SL) (SL)
Termite resistance R R R
Advisory codes

Target design life, hazard zones and conditions for use

Botanical name Corymbia citriodora Corymbia henryi Corymbia maculata
5 years above-ground Approved Approved Approved
15 years protected Approved Approved Approved
15 years Above-ground:A Approved Approved Approved
15 years Above-ground:B Approved Approved Approved
15 years Above-ground:C Approved Approved Approved
15 years Above-ground:D Approved Approved Approved
15 years In-ground:A Approved Approved Approved
15 years In-ground:B C2 C2 C2
15 years In-ground:C C3 C3 C3
15 years In-ground:D C4 C4 C4
Botanical name Corymbia citriodora Corymbia henryi Corymbia maculata
50 years protected Approved Approved Approved
50 years Above-ground:A Approved Approved Approved
50 years Above-ground:B Approved Approved Approved
50 years Above-ground:C Approved Approved Approved
50 years Above-ground:D Approved Approved Approved
50 years In-ground:A C1, C11 C1, C11 C1, C11
50 years In-ground:B C7, C11 C7, C11 C7, C11
50 years In-ground:C C8, C11 C8, C11 C8, C11
50 years In-ground:D C9, C11 C9, C11 C9, C11