On 16/04/2013 20:51 Bill Wright wrote:

...in
the 1970s my uncle had a flat roofed kitchen extension built. The
brickwork joined the existing building at each side. Somehow it rose one
course on its way round. The whole structure was skew-whiff. The back
window was on a distinct slope but the ceiling (I don't know how or why)
was perfectly level, so the bit of wall above the window was visibly
trapezoid.

Also in the 1970s, we bought a new house on a new estate. One weekend,
just round the corner from the show house, they demolished a freshly
built detached house, carefully stacking window and door frames, before
rebuilding it over a very few days.

It turned out that the plasterers had gone in, checked the rooms for
square, and found that the back wall was a brick longer than the front wall!

--
F