HOW DO YOU CALCULATE VIEWING DISTANCES FOR EXIT SIGNS MOUNTED GREATER THAN 2.5M?
BS5499-4, Clause 4.6c makes it very clear that “mounting height greater than 2.5m may be used, e.g. in large open spaces or for operational reasons, but such signs should be both conspicuous and identifiable and therefore large signs might be necessary”.
To assist evacuees with the prediction of the location of successive signs, the following principles should be applied:-