4 states, "Not less than a single obtainable route shall join Each individual accessible stage, like mezzanines, in multilivel structures and facilities" with Exception one studying, "An obtainable route will not be needed to stories and mezzanines which have an aggregate location of not over three,000sf and can be found https://cable-puller23220.blog-ezine.com/38688215/top-mezzanine-safety-gates-uk-secrets