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Last edited 14 Jul 2021
The term ‘winder’ refers to the tread of a stair that has non-parallel front and back edges, such as may be found where a staircase changes direction with no landing and so the treads that wind around the corner have one end narrower than the other; that is, they have a roughly triangular shape. They are typically used in situations where space restrictions do not permit the inclusion of a landing.
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