On Sun, 05 Oct 2003 23:07:38 +0100, Grunff wrote:

Greatest deflection is aout 30mm, over 70 years. The joists are
still nicely in their holes, that was one of the first things I
checked.

The leaning tower of Pisa has been moving gradually off centre for
several hundred years. It was only recently that they figured that if
they didn't do something it was going to come down sharpish.

I wouldn't depend on the argument "well it has only moved so much in
so many years". The straw that broke the camels back and all that.

PoP