| Anticlockwise stairway: |
A stairway that viewed from below winds to the left is an anticlockwise stair. |
| Baluster: |
Another name for the posts (laths) in the railing. |
| Block step: |
The first tread of the stairs, made slightly wider than the others to give a more welcoming feeling. |
| Child safety list: |
In an open stairway (without risers) a list is fitted under each tread to prevent children from creeping under and fastening. |
| Clockwise stair: |
A stairway that viewed from below winds to the right is a clockwise stair. |
| Closed stairway: |
Refers to stairs with vertical boards (risers) between the treads. |
| End knob: |
Round wall handrails can terminate with a turned knob. |
| Floor structure: |
Limited normally by the distance between ceiling and surface of the floor above. |
| Floor structure covering: |
The board that is sometimes used to cover the floor structure. |
| Floor structure opening: |
The opening between storeys where the stairs are placed. |
| Free stringer: |
Refers to a stringer not fitted against a wall. |
| Inner stringer railing: |
Refers usually to railing of inner curve |
| Inner stringer: |
Refers to stringer of inner winding, usually suspended freely but not always. |
| Newel: |
The sturdy posts at the top or bottom of a flight of stairs, sometimes also fitted in corners of the stairway. |
| Outer stringer: |
Stringer facing outward. |
| Outer stringer: |
Refers to stringer on outer winding. Is often (but not always) fitted on the wall. |
| Outer stringer rail: |
Railing on outer winding. |
| Riser: |
The vertical board between treads of a closed stairway. |
| Side stringer: |
See stringer. |
| Side beam: |
The wooden beam in which the treads are secured (or on top). Some stairs have no side beams. |
| Stringer: |
A long beam used for structural purposes.
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| Tread profile: |
The front edge of treads can be made with various profiles |
| Under rail: |
The joist on which the balusters stand. |
| Underlying string: |
Stringer with treads fixed on top. |
| Under rail: |
Bottom rail. |
| Upper rail: |
The handrail fitted on the balusters. |
| Wall handrail: |
Handrail secured to the wall, for stairs of which one side runs along a wall. |
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