- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 03 Sep 2018
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.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
70 buildings from 70 years of Concrete Quarterly. Book review.
Conserving the iron roof at the Albert Dock.
Delivering an infrastructure revolution.
The admissibility of evidence.
How many can you name? 37 anyone?
CIOB respond to the points-based system.
When is the weather considered 'exceptionally adverse'?
ECA backs call for a rolling programme of rail electrification.
What does 'curtilage' mean and why does it matter?
Our duty to prevent harm and protect each other.
A quality perspective.