Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 37·4.12
Headroom
Ramps and their associated landings must provide a clear headroom of at least 2000 mm measured vertically from the slope of the ramp and level of the landing.
Ramps and associated landings should have a clear headroom of not less than 2000 mm over the length and width of the ramp. Headroom is measured vertically from the slope of the ramp and the level of the landing. See Diagram 4.1.
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