Thread: Specific Gravity - list of Aussie species?

Thanks Ken. I understand it's inexact, and not being pedantic - just want to use the meter as it's supposed to be used. Variations are within each board let alone tree to tree.

Originally Posted by ian

Mountain Ash, Victorian Ash (Eucalyptus regnans) -- Average Dried Weight: 680 kg/m3) -- SG (Basic 0.49 -- 12% MC 0.68)

Basic 0.49, and 12%MC 0.68. Presumably basic is at 0%MC? Can that ever be the case?

Originally Posted by FenceFurniture

Basic 0.49, and 12%MC 0.68. Presumably basic is at 0%MC? Can that ever be the case?

yep
when the sample is oven dried the moisture content approaches 0. I won't claim it gets to zero as I don't know for sure, but oven drying will pretty much desiccate the wood sample.

Hi Brett (and your partner in "crime")

attached is an expanded species setting list for your "new" moisture meter

The table is colour coded.
Black text is data drawn from the Wood database
Blue is direct from Wagner's species setting table.

Originally Posted by ian

Hi Brett (and your partner in "crime")

attached is an expanded species setting list for your "new" moisture meter

The table is colour coded.
Black text is data drawn from the Wood database
Blue is direct from Wagner's species setting table.

Did you compile that yourself Ian?

Yes, I did.
Blue text is the data in Wagner's Species setting table. (A bit of copy and paste followed by search and replace converted Wagner's PDF into a word document)
Black text is data extracted from the Wood Database.

I have two additions for you

New Guinea Walnut	scientific name (Dracontomelon mangiferum)	SG at 12% MC 0.62	SG (basic) 0.50	Average dry (12% MC) density 625 (Wood Database)
New Guinea Rosewood, Solomon Islands Rosewood	scientific name (Pterocarpus Indicus)	SG at 12% MC 0.65		Average dry (12% MC) density 650 (Britton Timbers)

Wow, that's damned decent of you! Thanks very much for that. Is it in Excel by chance?

You want my Excel spreadsheet ??
Colour coded PDF not good enough?

Yes, the data is stored in Excel.

Given you are proposing to load the data onto a smartphone I thought a PDF would be most useful. If you need the data just ask.

Originally Posted by ian

You want my Excel spreadsheet ?? If you need the data just ask.

Ooh, yes please! It means it can be easily updated from this end, and I can prioritise likely species to the top (which saves scrolling through on the phone). Then I'll create another PDF.

Very decent of you to provide that data ian. Thanks.

Expanded Wagner Moisture Meter setting table.xlsx

Have you seen this post
Wood Moisture Meters Calibrated to Australian Species

If your meter is mentioned in the list in that post then there is reference to document to about a dozen common Australian timbers that enables accurate MC measurement that does not need density. All it requires is look up table that converts meter reading to real MC. The look up tables are provided in the document.

If you cannot find the document send me a PM.

At a bare minimum you can at least use a species for which an MC look up table is provided to check what you are doing.

Cheers

Originally Posted by FenceFurniture

Ooh, yes please! It means it can be easily updated from this end, and I can prioritise likely species to the top (which saves scrolling through on the phone). Then I'll create another PDF.

Hi Brett

Here you go.
I've added a few more species using the Business Queensland site -- see the web links in the comment column.


Note that some of the values in the Wagner Species Table appear not to be an exact juxtaposition of the 12% MC values extracted from other sites such as the Wood Database.

Cracker, thanks Ian.

Brett

Bootle's book (Wood in Australia) has specs for a many Aussie timbers and also exotics. I think I have another source too. I will have a look when back home.

Not sure if it has aready been mentioned, but meters are calibrated for Douglas Fir (Oregon) and a compensator has to be applied for each species. Correction tables are usually suppied with the meters, but may not cover a wide range of Aussie trees.

Regards
Paul







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