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A gap in a wall with a quarter-circle arc showing the swing.
Also known as: Single door plan symbol, Door arc symbol, Swing arc symbol
On an architectural plan a single door is drawn as a break in the wall with a leaf line and a quarter-circle arc, showing which way the door opens and how much floor it sweeps.
Denotes a hinged door, the arc recording both the direction of opening and the floor area the leaf sweeps.
Contexts: Technical drawing
Carries information no other plan element does: the swept area determines whether furniture, a second door or a wheelchair turning circle can occupy the same space.
Contexts: Technical drawing
A break in the wall line with a straight line for the door leaf and a quarter-circle arc connecting its free edge back to the frame.