Door swing
A hinged door, drawn with the arc it sweeps as it opens.
Easily confused with
How to read it
On a floor plan, a straight line shows the door leaf standing open and a quarter-circle arc shows the path its edge travels. The line also shows which side of the opening the door is hung on, so the drawing shows which way the door opens.
Also searched as: door arc, hinged door symbol.
This explains what a symbol represents on a drawing. Conventions vary between firms and standards, and a drawing's own legend takes precedence.
Read next
- Next in Blueprint symbolsDouble doorTwo doors in one opening, one hinged at each side. The arcs show the way each door swings.
- The same shape in Accessibility symbolsAssistive listening symbol (ear)An ear with a diagonal bar across it is the International Symbol of Access for Hearing Loss. It marks an assistive listening system: a loop, infrared or FM system that sends sound to hearing aids or headsets.
More blueprint symbols
The same shape elsewhere
Browse symbols drawn with curves and waves or lines.
Sources
- Construction Print Reading in the Field, TM 5-704 / AFM 85-27, Departments of the Army and the Air Force, para. 2-2a; app. B, typical door symbols
- Reading Architects' Blueprints, William S. Lowndes, 1922, International Textbook Company, Scranton (Internet Archive), §5, art. 102
- Engineering Aid 3 (NAVEDTRA 14069), Nonresident training course, April 1995, Naval Education and Training Command (copy hosted by Navy Tribe), Ch. 10, drawing a floor plan
Researched, edited and approved by Rory Hansen before publishing. Last reviewed October 3, 2026. How we research
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