Eucalyptus rudis Endl. Flooded Gum Endl., Fenzl, Benth. & Schott, 49 ( ). Conservation Code: Not threatened. Naturalised Status: Native to. An Eucalyptus rudis in Goleta, CA is registered as a California Big Tree. It measures feet high, with a trunk circumference of inches and a crown spread. Flooded gum (Eucalyptus rudis) In south-western Australia flooded gum replaces its close relative river gum (Eucalyptus camaldulensis) as the dominant tree of.

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WA flooded gum eucallyptus a medium-sized tree with height 10 to 20 m and diameter up to 1 m. The trunk is usually short with poor form, and the crown wide-spreading. The species occurs near the coast and adjacent ranges from north of Geraldton to the south coast.

WA flooded gum | Forest Products Commission

It occurs mainly on river flats and creek banks, in similar occurrences to those of river red gum Eufalyptus. Flooded gum occurs typically in open forest or woodlandassociated with wandoo, marri and jarrah.

For decades the flooded gum has been heavily attacked each spring by insects, with attacks by leaf miners, leaf blister sawflies and lerps. The crowns regenerate in late spring. Green density is the density of wood in the living tree, defined as green mass divided by green volume, and useful for estimating transport costs. It varies with season and growing conditions.

Air-dry density is the average mass divided by volume at 12 per cent moisture content this is the average environmental condition in the coastal capital cities around Australia. Basic density is oven-dry mass divided by green volume.

This measure has the advantage that moisture content variations in the tree during the year are avoided. The ratings are not relevant to above-ground use. Ratings are now available for about seventy species for decay, and for decay plus termites.

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WA flooded gum

Minimum values MPa for strength groups for green and seasoned timber come from Australian Standard AS ‘Timber – Classification of strength groups’. In grading structural timbereach species is allocated a ranking for green timber of S1 strongest to S7, and for seasoned timber SD1 strongest to SD8. MOR is modulus of rupture or bending strength, MOE is modulus of elasticity or ‘stiffness’, and MCS is maximum crushing strength or compression strength. Hardness refers to the Janka hardness test and is a measure of resistance to indentation.

Where test data were available, they are shown in bold print. Most values are from BootleWood in Australia.

Types, properties and uses. The physical characteristics of the woods of Western Australia’.

Where no strength data were available, air-dry density was used in accordance with the Australian Standard AS Timber – Classification of strength groups to predict the strength group.

Consequently, the strength values quoted are from the above two tables. Green and dry strength groups are S5 and SD5.

Factsheet – Eucalyptus rudis subsp. rudis

The brackets indicate conservative provisional ratings based on the wood density. There are other species such as red tingle and yellow tingle whose timber is rarely commercially available because the areas of occurrence are predominantly eucalyptua conservation areas.

Other species such as Goldfields timbers are only available in limited quantities because of their scattered occurrence and the fact that the industry is in the early stages of development. Very limited availability from private property.

Wood description This description can include heartwood and sapwood colour, grain, figure. Heartwood is a yellow to light reddish brown, hard and cross-grained. Wood density Green density is the density of wood in the living tree, defined as green mass divided by green volume, and useful for estimating transport costs. Drying and shrinkage As wood dries, it shrinks more in the tangential direction i.

The figures given are shrinkage from green to 12 per cent moisture content, before steam reconditioning treatment, and with some species after stream reconditioning. Reconditioning is essential for recovering collapse which may have occurred during the drying process, and is essential euxalyptus species such as the ash-type eucalypts of eastern Australia.


Tangential and radial shrinkage are estimated as about per cent respectively. Workability With south-west and plantation-grown trees, comments are made on the comparative ease or difficulty of turning, nailing and bending, on susceptibility to splitting and other working properties.

With semi-arid, arid and desert species, a more complex survey was made and reported in Siemon and Kealley The properties assessed were turning, machinability, boring, screwholding, stability, sanding, gluing and finishing.

A semi-quantitative score was used: This book uses the descriptive terms rather than numbers. Dressing, sanding, drilling, turning and finishing are rated as good, carving is fair. Class Life Years 1 More than 25 2 15 to 25 3 8 to 15 4 Less than 8 The ratings are not relevant to above-ground use. The species has not been formally assessed, but is recorded as having low durability.

Natural populations

Strength group and properties Minimum values MPa for strength groups rudos green and seasoned timber come from Australian Standard AS ‘Timber – Classification of strength groups’. Availability Timber from many species is available only in limited quantities, from near the areas where the trees grow naturally or in plantations. Uses Various past and potential uses are given as a general guide, but the list is obviously not conclusive.

In particular, there is increasing interest in specialty timbers, and the semi-arid, arid and desert area species have considerable potential for this use. The only documented use is as firewood, although it could be used as a specialty timber.