[Cob] Roto Tillers and Cob?

[Lance Collins]

David T asked

> >Anyone ever used forms to hold a layer of cob on the wall?
>
>It's called 'poured earth' or ' formwork cob' or several other names.
>
>How does it compare to straight cob?

pro: mix quality is less critical,  so can do wetter mix in a concrete mixer

con: need to have formwork
      : takes time to set up forms
      : forms are usually straight so wall shape is less flexible
      : wall is not one big mud brick so less strong

Overall using forms is quicker with less work but less flexible (in 
design) and not as strong.

As in earth building generally the characteristics of your soil are 
important in deciding whether to cob, use forms, go strawbale or make 
blocks for an adobe wall.  And there are lots of variations on block making.

Lance
(in Aus)


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.1.394 / Virus Database: 268.9.2/373 - Release Date: 22/06/2006