Eucalyptus sphaerocarpa. Family: Myrtaceae
- Bulky, tall tree.
- Grows to 45m high and 2m stem diameter.
- Grey-brown bark is fibrous and ‘stringy’ but more compact than true stringybarks.
- Confined to the Blackdown Tableland area of Central Queensland, 150 km west-south-west of Rockhampton.
- Heartwood is brownish
- Sapwood is paler.
- Grain slightly interlocked.
- Mining timbers.
- General building construction.
- Unseasoned framing.
- Density: 995kg/m3 at 12% moisture content; about 1.0m3 of seasoned sawn timber per tonne.
- Strength groups: (S3) unseasoned, (SD3) seasoned.
- Stress grades: F8, F11, F14, F17 (unseasoned), F14, F17, F22, F27 (seasoned) when visually stress-graded according to AS 2082—2000: Timber—Hardwood—Visually stress-graded hardwood for structural purposes.
- Joint groups: J1 unseasoned, JD1 seasoned.
- Shrinkage to 12% MC: not available.
- Unit shrinkage: not available.
- Durability above-ground: Class 1 (life expectancy more than 40 years).
- Durability in-ground: Class 2 (life expectancy 15–25 years).
- Lyctine susceptibility: sapwood is not susceptible to lyctine borer attack.
- Termite resistance: resistant.
- Preservation: sapwood readily impregnates with preservative.
- Seasoning: relatively easy to dry.
- Hardness: very hard (rated 1 on a 6-class scale) to indent and work with hand tools.
- Machining: relatively easy to work.
- Fixing: no difficulties using standard fittings and fastenings.
- Gluing: satisfactorily bonds using standard procedures.
- Finishing: readily accepts paint, stain and polish.
- Sapwood: pale brown, usually distinct.
- Heartwood: brown to yellow-brown.
- Texture: medium and even.
- Vessels: small to medium, mostly solitary, some diagonal chains, tyloses.
- Parenchyma (soft tissue): sparse.
- Rays: fine, visible with a lens.
- Burning splinter test: match-size splinter burns to charcoal.
Research and resources
- Boland, DJ, Brooker, MIH, Chippendale, GM, Hall, N, Hyland, BPM, Johnston, RD, Kleinig, DA and Turner, JD 2006, Forest trees of Australia, 5th ed., CSIRO Publishing, Collingwood, Australia.
- Bootle, K 2005, Wood in Australia: Types, properties and uses, 2nd ed., McGraw-Hill, Sydney.
- Ilic, J 1991, CSIRO atlas of hardwoods, Crawford House Press, Bathurst, Australia.
- Queensland Government, DAF 2018, Construction timbers in Queensland: properties and specifications for satisfactory performance of construction timbers in Queensland. Class 1 and Class 10 buildings, Books 1 & 2, Department of Agriculture and Fisheries, Brisbane.
- Standards Australia, 2000, AS 2082—2000: Timber—Hardwood—Visually stress-graded for structural purposes, Standards Australia International, Strathfield, NSW.
- Last reviewed: 12 Dec 2018
- Last updated: 12 Dec 2018