Podcast
Questions and Answers
What is the horizontal distance between the nosings or front edges of two consecutive steps?
What is the horizontal distance between the nosings or front edges of two consecutive steps?
What is the vertical member of a stair?
What is the vertical member of a stair?
What is the minimum clear vertical distance between the tread and overhead structure?
What is the minimum clear vertical distance between the tread and overhead structure?
What is the projecting part of the tread beyond the face of the riser?
What is the projecting part of the tread beyond the face of the riser?
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What is the combined framework of hand rail and baluster?
What is the combined framework of hand rail and baluster?
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What is the vertical distance between the upper surface of two consecutive steps?
What is the vertical distance between the upper surface of two consecutive steps?
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What is the horizontal member of stair?
What is the horizontal member of stair?
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What is the platform between two flights?
What is the platform between two flights?
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What is the structural member which supports the steps and acts as inclined beams?
What is the structural member which supports the steps and acts as inclined beams?
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What is the portion of stair which permits ascent or descent?
What is the portion of stair which permits ascent or descent?
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Study Notes
Stair Components
- A step is a portion of a stair that permits ascent or descent, composed of a tread and a riser.
- A stair is composed of a set of steps.
Tread
- The tread is the horizontal member of a stair.
- The tread of public buildings must be wide enough to provide safe footing.
Going
- Going is the horizontal distance between the nosings or front edges of two consecutive steps.
- The going of public buildings is usually 30cm, providing safe footing.
Riser and Rise
- The riser is the vertical member of a stair.
- The rise is the vertical distance between the upper surface of two consecutive steps.
- The rise of public buildings is about 15cm, while a higher value can be used for private buildings.
Technical Terminologies
Nosing
- The nosing is the projecting part of the tread beyond the face of the riser.
- The nosing is usually rounded off from the architectural point of view.
Flight, Landing, and Baluster
- A flight is a continuous set of steps between floors and/or landing.
- A landing is a platform between two flights.
- A baluster is the vertical member that supports the hand rail.
Balustrade and Hand Rail
- The combined framework of hand rail and baluster is known as a balustrade.
- The hand rail is a rounded or molded member of wood or metal fixed on top of balusters.
String and Head Room
- A string or stringer is the structural member that supports the steps and acts as inclined beams.
- The head room is the minimum clear vertical distance between the tread and overhead structure.
Soffit
- The soffit is the underside of the stair.
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Description
Test your knowledge of the different parts of a staircase, including steps, treads, risers, and going. Learn about the importance of safe footing in public buildings and more.
