Farm Forestry New ZealandAssessing the Bending and Density Properties of six Eucalypt Species
By Doug Gaunt, Dean Satchell, John Moore, June 2019.
Download SWP-T080 (pdf)
Executive summary
Small clear bending strength samples were cut from the following 16 year old trees that had already been felled for an earlier SWP durability study.
- E. bosistoana
- E. quadrangulata
- E. pilularis
- E. sphaerocarpa
- E. globoidea
- E. muelleriana
331 small clears were prepared and then tested for bending stiffness/strength and measured for density.
Comparing the six species as 16 year old trees against New Zealand grown radiata pine small clear values showed that:
- E. bosistoana, E. quadrangulata, E. pilularis and E. sphaerocarpa all had higher small clear bending strength and stiffness properties than the highest density radiata pine;
- Stiffness and bending strength of young Northland E. globoidea & E. muelleriana is comparable to radiata pine with a nominal density of around 550kg/m3.
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