[Cob] Jaanus trench

[Shody Ryon]

I have not built a rubble foundation or cob building.
Nor do I understand how a rubble foundation derives
its tinsel strength, I assume that a rubble foundation
does not have any tinsel strength. I have built a
conventional foundation, and if I understand your
description, which is a big if, I would dig the
foundation deep enough to extend below the frost depth
and install compression resistant insulation (I know
nothing about this other than is exists) on the bottom
of the trench and rigid underground foam (usually pink
or blue) around the outside and run any pipes such as
water supply and waist lines or high and low voltage
electrical conduit and fill the trench with any combo
of gravel and sand that you have. I think some big
gravel or rock should be used above ground if you are
bringing the foundation up a little bit.
Cheers,
Shody

--- Barb Troje <btroje at gmail.com> wrote:

> he told me it was  a relativly high site
> I think he is more concerned about precipitation and
> frost heave
> 
> 
> On 10/8/07, Shody Ryon <qi4u at yahoo.com> wrote:
> >
> > --- Tim Nam <tkn317071 at yahoo.com> wrote:
> >
> > > I hate to be a downer, but my concern is
> building on
> > > sand in general should be avoided.
> >
> > I think building on sand is a good idea, sand is
> often
> > imported to building sites because it doesn't need
> > much compaction and will not expand like clay can
> when
> > it gets wet.
> >
> > > I don't understand why the rocks would be moving
> > > into the sand.
> >
> > I agree, unless there is a high volume of water
> > flowing next to house, which is includes a lot of
> > other problems too.
> >
> > > T
> > Cheers,
> > Shody
> >
> >
> >
> >
> >
>
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> 
> 
> 
> -- 
> Barbara Troje MD
> AOBA Education Committee
> Nizhoni ALpacas , Las Vegas, NM
> 



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