Australian Hardwood Moisture Content

Hardwood flooring lining dressed boards 9 14 as 2796 decking 10 to 18 as 2796 framing 90 of pieces less than 15.

Australian hardwood moisture content.

A 10 moisture content reading means that 10 of a wood sample s weight is due to water in the wood. Understand why moisture gradients occur in australian hardwoods during drying and their affects on the performance of timber in service. Wood changes dimensions with moisture it swells when it gains moisture and it shrinks when it loses moisture. Surface humidity of metal 80 rh no material moisture content limit in relation to tolerance to moisture cycling.

If a board reads 100 difficult to measure accurately then the weight of the water equals the weight of that wood. This will ensure minimal movement in a given environment. Moisture content is generally measured by either a meter or through. Moisture content is simply the mass of moisture present in wood.

The moisture content at winter time can be estimated to be 3 4. 10 15 moisture content with the average 12 as 1810. Product specification standards australia 1999 softwoods. Moisture content is a critical property of seasoned timber.

9 14 moisture content with the average of 11 as 2796 1 1999 timber hardwood sawn and milled products part 1. Timber with a moisture content higher than 15 is regarded as. 9 14 moisture content with the average 11 as 4785 1 2002 timber softwood sawn and milled products standards australia 2002 white cypress. Seasoned timber relates to low levels of moisture content less than or equal to 15.

We can usually provide timber with an average moisture content of one percent. Hardwood flooring lining dressed boards 9 14 as 2796 decking 10 to 18 as 2796 framing 90 of pieces less than 15. Percent moisture content in wood is the ratio of the weight of water compared to the overall weight of a piece of wood. Australian standards that cover the moisture content of seasoned.

The moisture content in green wood can vary from as low as 40 to as high as 200 depending on the age and species of the wood and it growing conditions. If required solar kilns are used to achieve small adjustments to moisture content. Typical wood shrinkage from green to ovendry moisture content is typical 3 8 in radial grain direction and 6 12 in tangential grain direction. Improve existing technology ies and or processes to reduce moisture content mc variability between and within boards during drying of australian hardwoods in an economical and practical manner.

Australian standards that cover the moisture content of seasoned. 4 1 initial moisture content emc80 equilibrium moisture content at 80 rh pass fail criteria. 6 1 mold index 3 0 onset of visual mold growth 6 2 corrosion 30 day avg.