--- In papercreters@yahoogroups.com, "rmorger03" <rmorger@...> wrote:
>
> Hi first post to the group though I have been digesting for a while.
> I'm Robert from Central Texas, mostly hot humid and low to moderate rain.
>
> What is the thinest thickness you would go for a non structural
> plank?
I would not go below 2", personally. I find that less that that is prone to breaking if accidentally smacked with something. I would also recommend leaving an air gap between the planks. This will slow water transmission between planks, allow another 2 surfaces for evaporation and lower the danger of wind resistance damage.
> What would work best to reinforce the length? ie rebar, remesh,
> bamboo?
I would go non metal, if I used anything at all. 4'2" is not that far for unsupported length.
> Would it be best to coat the entire plank in a thin coat of
> ferrocement to reinforce?
IMO, no. Increase in weight and cost. Just up the sand or cement content instead.
> Would paint sealant be good enough to seal the planks or would
> something else more drastic be needed?
Not sure, but I think a good paint seal should be fine.
> Would compressing the pc be a better way to make this type
> application? example filling a 3" x 6" x 10' form then compressing
> down to 1" x 6" x 10'.
I would go with 4" to 2" or 3" to 2" compression. Strength increase for shear should be decent.
> Any other add ins to the pc be needed other than say paper pulp, cement some perlite or wood chips and some sand? I am thinking that I will need to add a bit more cement to the mix to make it work for this application say 50-60% by volume not weight.
I would go with 25-30% portland and 20-25% sand, 50% paper by volume. If you use perlite, replace sand with it. I would not use wood chips personally unless you tested how they affect shear for your application.
- Ernie
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