Strength & Durability Table

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 infomation on Strength & Durability ratings please click here

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