The free vertical distance between the line that joins the edge of the moving steps / segments and any obstacles located above the escalator / moving walkway must not be less than 2.30 m.
On the entrance to and exit from every plant, there must be an area large enough for passengers to stand. This space must be at least 2.50 m deep and as wide as the distance between the handrail (B). If an area double the width of measurement B is available, its depth can be reduced to 2.00 m.
This technical sheet is available on the web site www.elmaonline.it