headroom
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headroom
Standards
the minimum vertical distance, clear of all obstacles such as beams or ducts, above the floor or the slope line of the stair tread nosing
Source - AS 1657:2018: Design, construction and installation
HB50
minimum vertical distance, clear of all obstacles such as beams or ducts, above the floor or the line of the tread nosing
See Figure A.32
See Figure A.32
