Ensure that any no-go zone extends – at right angles to the wall on both sides – a least the distance equivalent to the total unsupported wall height plus 1.2 m.
If winds exceed ‘fresh winds’ (see table 1), establish a no-go zone – regardless of any wall supports already in place.
Consider individual no-go zones for each wall, isolating specific areas or isolating the entire site.
Do not let anyone within the no-go zones.
A no-go zone can be removed once the reason for it no longer exists, eg - wind no longer exceeds ‘fresh winds’.
Note: You may need no-go zones for issues other than masonry wall failures eg - for falling objects.