- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 06 Feb 2021
Flight of steps
‘Flight’ is a term used in building design and construction to denote a continuous sequence of steps (or risers) connecting floors, landings or intermediate landings. The typical width of a flight in a domestic setting is around 850mm or more.
A quarter-turn stair (sometimes called a ‘dog-leg’ stair) features a quarter-turn landing situated between flights. This may be located at any point on the staircase, from which point the second flight changes direction by 90 degrees to the left or right leading to the next floor above. In properties where space is at a premium, the landing may be replaced by a series of winders (wedge-shaped steps in plan) which then makes the stairway a continuous single-flight stair.
A half-turn stair usually involves a half landing between two flights and allows a 180-degree change of direction. An alternative arrangement to achieve 180-degree travel, space permitting, is to have two quarter landings in a configuration of flight-QL-flight-QL-flight; this may also form an open-well stair.
Stairs with more than 36 risers in consecutive flights should have at least one change in direction between flights. For buildings other than dwellings, the maximum number of risers between landings should be 16 for utility stairs and 12 for general access stairs. There should not be any single steps.
- Approved Document B – Fire safety.
- Approved Document K – Protection from falling, collision and impact.
- Approved Document M – Access to and use of buildings.
 Related articles on Designing Buildings Wiki
- Accommodation stair
- Approved Document B
- Approved Document K
- Approved Document M
- Firefighting lobby
- Landings in buildings
- Maximum length of a flight of stairs
- Means of escape
- Protected stair v escape stair
- Protected stairway
- Spiral stairs and helical stairs
- Stair design
- Stairs going
- Stairs nosing
- Stairs riser
- Stairs tread
- Types of stairs
- When to install a staircase during the construction process.
- Width of doors stairs and escape routes.
Featured articles and news
CIAT reporting from the Competition and Markets Authority.
Making sustainable construction number one priority.
Interview with ECA CEO.
Many provisions came into force on June 28, 2022.
With room to expand.
Refurbishment, Energy Efficiency, Indoor air and process.
Why building acoustic considerations must be non-negotiable.
Aluminium Composite Panels (ACP) is one example.
Inventors and innovators at ICE.
Life, death and art at the Stuart court. Book review.
Real estate, place adaptation and innovation.
Review and comment on the revised draft before July 11.
Write about something you know, help us build and grow !
A blended event and triumphant return.
Mark Reynolds succeeds Andy Mitchell as Co-Chair of CLC
Designing Buildings is 10 years old.
From alteration to deconstruction on DB.
Understanding temperature in buildings on DB.
A call for home energy management to be modernised.
How many different types can you think of ?
Looking back and fourth to what still needs to be done.
Pioneering Indian environmental design Architect.
The greenest building is the one already built.
History of Temple Meads rewritten.
Currently standing at just 1%.
Find out more with BSRIA.
Changes come into force for F,L,O and S.