4 states, "At the least one available route shall link Every available level, together with mezzanines, in multilivel properties and facilities" with Exception 1 reading through, "An obtainable route will not be needed to tales and mezzanines which have an aggregate spot of not over three,000sf and are located higher https://cable-puller95840.targetblogs.com/38754733/everything-about-mezzanine-safety-gates-uk