Wall 275mm think (2 leaf + 75 cavity). What width do the trench
foundations need to be ?
TIA,
Simon.

On 17 Oct 2005 03:06:23 -0700, wrote:

Wall 275mm think (2 leaf + 75 cavity). What width do the trench
foundations need to be ?
TIA,
Simon.

Depends on the soil type.

Rick

In article . com,
wrote:
Wall 275mm think (2 leaf + 75 cavity). What width do the trench
foundations need to be ?

How high is the wall? Unless the soil is very poor the minimum width
is probably determined by practical considerations, e.g. if you are
digging the trenches by hand 400mm is probably the minimum, whilst
with a JCB you might get away with 300mm. Also note that the narrower
the foundation the more accurate the excavation needs to be.

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