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
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Building Safety Newsletter from MHCLG.
An extraordinary record of steel engineering worldwide.
Households living near new pylons to save on bills.
ECA warns growth must not outpace grid capacity or skills.
The role of the client and decision making
CIOB response to built environment professions call for evidence.
Construction's sustainability reporting revolution
Tracking upfront embodied carbon with digital tools.
ECA welcomes procurement reforms
Public spending must back British jobs and skills.
Campaigning for Edinburgh: the Cockburn Association 1875-2049
The role of the civic voice in protecting character. Book review.
CIOB photography competition is open for entries.
ECA Edmundson apprentice of the year award
Finalists announced.
Major new study exposes serious knowledge gaps.
Generating energy from internal light as well as sunshine.