Stairs string
A stair string, stringer, or stringer board, is the panel on either side of a flight of stairs to which the treads and risers are fixed.
The string is described as ‘closed’ if it conceals the profile of the treads and risers. It is described as ‘open’ or ‘cut’, if its upper edge is cut away so that the profile of the treads and risers is visible from the site.
A 'routed string' has slots cut into it, into which the treads and risers can be fixed.
A string that is fixed to the wall is described as the 'wall string'.
The perpendicular distance between the pitch of the stairs and the top of the string, is described as the 'string margin'.
Wheelchair platform stairlifts travel along the stair string, allowing wheelchair users to travel up and down stairs while remaining seated in their wheelchair.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
ECA Engineering Services Survey
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.
Technology is making remote work a reality.
Carefully placed structures add drama to pastoral vistas.
Making mission impossible...possible!
Report provides actions required by 2030 to achieve a zero carbon economy.
Flat white isn't just for coffee
What type of cool roof is most suitable?
Active Travel programme prioritises cyclists and pedestrians.
CIAT issues caution for use of new standard.
ICE examines Scotland's infrastructure
Industry leaders discuss climate change, the economy and other influences.
The building manager is key to operations.
The impact Scotland’s dynamic coast has on the historic environment.
Conservation, People and Places
IHBC announces role in new APPG.