[Cob] roof support calculation / formula

Fri Oct 24 11:19:47 CDT 2003

The roof drops 5" for every foot.
4 in 12 is pleanty..
using PE film I'm told.
 5 in 12 is pretty steep.
what kind of roof are you talking about earth? what?

On Fri, 24 Oct 2003 08:45:22 -0700 "Jilly" <JILLPRUETT at peoplepc.com>
writes:
> I read allot about being careful to make sure my roof or loft area is 
> properly supported, but I don't find anything on what the formula is 
> to figure this out. 
> Also, some of my cob books talk about roof pitch, like " 5 in 12 " 
> What does that mean? 
> 
> -jill
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