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Parallel lines with an arrow marking direction of travel.
Also known as: Staircase plan symbol, Stair run symbol, Tread lines symbol
On an architectural plan a stair is drawn as a run of parallel lines representing treads, with an arrow marking the direction of travel upward from the floor shown.
Denotes a stair, the parallel lines representing treads and the arrow the direction of ascent from the floor being drawn.
Contexts: Technical drawing
Is cut by a break line partway up, because a plan is a horizontal section and the stair continues above the cut.
Contexts: Technical drawing
A series of evenly spaced parallel lines within two long side lines, with an arrow running along their length.