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Re: Eucy Poles

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On 16 Feb 2005, at 14:18, Sharon Robertson wrote:

> Listers,
> I noticed in the archives that Jeffrey Fertich was looking for allowable
> stress values for Eucalyptus Poles, but it didn't look like he had any
> success on this forum. That post was from 1998. Does anyone have a source
> for these values now?
> Thank you,
> Sharon
>
> Sharon Robertson, PE
> Arcon Engineers
> 5625 Ruffin Road, Suite 130
> San Diego, CA 92123
> 858/503-7854
> 858/503-7858 fax
> Visit us on the web at www.arconengineers.com
>
From the following publication:

Forest Products Laboratory. 1999. Wood handbook?Wood as an
engineering material. Gen. Tech. Rep. FPL?GTR?113.

In chapter 4 on page 4-21, you may find the following information.

Jarrah (Eucalyptus marginata)
Green
sp gravit - 0.67
Mod. of Rupture - 9,900 psi
Mod. of Elasticity - 1,480,000 psi
Comp. parallel to grain - 5,190 psi
Shear parallel to grain - 1,320 psi
Side Hardness - 1,290 lbf

12% moisture
Mod. of Rupture - 16,200 psi
Mod. of Elasticity - 1,880,000 psi
Comp. parallel to grain - 8,870 psi
Shear parallel to grain - 2,130 psi
Side Hardness - 1,910 lbf



Karri (Eucalyptus diversicolor)
Green
Sp. Gravity - 0.82
Mod. of Rupture - 11,200 psi
Mod. of Elasticity - 1,940,000 psi
Comp. parallel to grain - 5,450 psi
Shear parallel to grain - 1,510 psi
Side Hardness - 1,360 lbf

12% Moisture
Mod. of Rupture - 20,160 psi
Mod. of Elasticity - 2,600,000 psi
Comp. parallel to grain - 10,800 psi
Shear parallel to grain - 2,420 psi
Side Hardness - 2,040 lbf

Hope this helps (HTH) a little bit.



Take care, Lloyd Pack, P.E.

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