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On Monday, November 17, 2014 8:19:28 AM UTC, ARW wrote:
On Saturday I arrived at work to discover this at the customers house

Do you have an (approx) width of the rear extension, and the deflection of
the wall in mm?

A structural engineer I know would be interested in this.



The rear extension is about 3m wide. Now the joiner who helped with the
acro's (the one who built the internal studding) says that the tops of the
wall were both about 20mm out (ie both 20mm out) but the RHS wall (facing
from the outside) was not plumb when he built the internal studding and that
the LH wall had moved further. The LH wall had a crack appear at floor
level.

This picture of the LH wall shows (to the best of my ability) how the top
and rear of that wall splayed out more than the rest of the wall.

http://wiki.diyfaq.org.uk/index.php?title=File:026.JPG

--
Adam