[Cob] Soil ratio

[Marlin Nissen]

I've actually found that the building a little model
or little samples gives the best idea of what's a
'good' mix as you can test the strength when fully
dry, for: too crumbly (not enuff clay)?, too crack
filled (too much clay)?  I like also writing the
different ratios of clay/sand (ex. 1:3, 1:4 on
cardboard that the sample rests upon)


I'd agree with Shannon's assessment that the QUALITY
of the clay varies a lot! Looks are deceiving too,
that bastard silt!

Marlin

--- Predrag Cvetkovic <predragcv at ptt.yu> wrote:

SNIP 
> 
> Just to add: how about testing with some clay in a
> jar. Shake well and when
> settled, you can see the ratio clay:send in your
> clay.
> Best regards to all
> Predrag
> 
> 
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