Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 44·7.1
Zones of visibility for doors and gates on main routes
Doors or gates across main routes of travel or that can be pushed open from either side must have visibility zones at specified distances (150 mm minimum) at heights of 500 mm, 800 mm, 1150 mm, and 1500 mm toward the leading edge of the door leaf.
A door or gate –
(a) across a main route of travel; or
(b) which can be pushed open from either side,
should have, towards the leading edge of the door leaf, zones of visibility as shown in Diagram 7.1.
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