| Timber Species | Strength | Durability Rating |
| Tallowwood | F17 - F34 | Class 1 |
| Blackbutt | F17 - F34 | Class 1 |
| Ironbark | F22 - F42 | Class 1 |
| Spotted Gum | F17 - F34 | Class 1 |
| Blue Gum | F14 - F24 | Class 2 |
| Forest Red Gum | F14 - F22 | Class 1 |
| Mountain Ash | F14 - F22 | Class 3 |
| Stringybark | F14 - F22 | Class 3 |
| Jarrah | F11 - F22 | Class 2 |
| Karri | F11 - F22 | Class 2 |
| Brushbox | F14 - F24 | Class 3 |
| Oregon(Douglas Fir) | F8 - F14 | Class 3/4 |
For Further information on Strength & Durability ratings please click here