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open string

a staircase string whose top follows the profile of the steps in such a way that the treads project beyond its outer face. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for open string
  • In an open string stair, the outer stringer is cut to reveal the stepping of the stairs.
  • The interior features a narrow, open string staircase with simple round balusters and newel posts.
  • The open string stair, with delicately carved balusters, is at the northwest end of the hall.
  • Graceful scrolled brackets grace the open string and the frieze of the curved stairwell.
  • The open string stairway has two flights with a landing.
  • The east hall contains the principal stair with an open string, a simple oval handrail and square balusters.

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