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Posted by Dennis on March 29, 2007, 7:37 pm
I've seen a lot of those type products, but I wouldn't consider them as
non-wood as they need the wood fiber for strength. (Actually I've only read
about them, never seen them used anywhere.)
The OSSB seems differnt however. According the the manufacturer, they "split
the hollow plant stalks to maximize the surface area on the straw fibres.
The increased surface area allows the individual fibres to bond when mixed
with an isocyanate resin, which is then subjected to heat and pressure. This
process causes the individual fibres to inter-weave, creating a panel equal
in strength to wood based OSB products."
I haven't read what the nail holding values are, that would be a critical
factor; of course.
In the future, the little piggy's house made out of straw may very well be
the better one! <grin>
Dennis
> In a previous post Dennis wrote...
>> Don't get me wrong, I'm not a proponent of non-wood products, I simply
>> find
>> it extremely interesting that a deck made from non-wood products like
>> straw
>> is even feasible. A product considered as waste.
>> I find it interesting as to what the world is coming to.
>>
>
> Many of these products are structural resin with some sort of fiber filler
> so that they can be installed with nails or screws. The trick is not what
> is is being used for the fiber filler, but the proper distribution of the
> fibers in the resin. The fibers must be the right shape and weight, or
> they don't distribute through the mix and then press into sheets properly.
>
> --
> Bob Morrison, PE, SE
> R L Morrison Engineering Co
> Structural & Civil Engineering
> Poulsbo WA
> bob at rlmorrisonengr dot com
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