Species guide appendix

Table 1: Natural durability – probable life expectancy*

* The ratings in this table are based on expert opinions and the performance of the following test specimens:

1. In-ground: 50x50 mm test specimens at 4 sites around Australia.
2. Above-ground: 35x35 mm test specimens at 11 sites around Australia.

Notes:

1. As further reliable evidence becomes available, these ratings may require amending.
2. The heartwood of an individual piece of timber may vary from the species’ nominated classification.
3. Above-ground conditions equate to outside above-ground, subject to periodic moderate wetting when ventilation and drainage are adequate.

Source: Australian Standard: Timber – Natural durability ratings, p.7.