In article , Ric wrote:


Interested to know how they derived those figures, and whether builders are
legally required to use those figures. I wouldn't worry about your house
blowing down - even the lowest figure (for London) is over F12 on the
Beaufort scale and barely survivable in the open.

Dunno. The reference is:

CP3: Chapter V: Part 2: 1972. Wind Loads. British Standards
Institution.


Regards,
Nick Maclaren.