On Fri, 2004-05-28 at 08:40, der Mouse wrote:
I suppose the ones I am familiar with from the one job
I've worked at
that used them are atypical, then. They were supported by a network of
metal (steel, presumably) braces which in turn were supported by small
pillars to the floor where the braces met (which was under the corners
of the tiles).
I've worked in an office which had those too, so you're not alone. They
were very tight fitting too, and needed a couple of big suction-cups to
lift them up. They could take one hell of a weight though.
In my case the building probably dated from around 1980.
cheers
Jules