Storeys of a building
The British English word ‘storey’ (plural storeys) and the American English ‘story’ (plural stories) refer to a level element of a building that has a useable floor. The term may be used interchangeably with ‘floor’, ‘level’, or ‘deck’; however, it is usual for a building to be described as a ’ten-storey building’ while the individual storey may be referred to as the ‘tenth floor’.
‘Storey’ tends to exclude building levels that are not covered by a roof, such as a roof terrace. It is also not used to refer to the street level floor which is typically called the ‘ground floor’.
Most houses are two-storeys, while bungalows are single-storey. A multi-storey building is a building that has multiple storeys, and typically contains vertical circulation in the form of ramps, stairs and lifts.
Buildings can be classified by the number of storeys they have.
- A low-rise building is one which is not tall enough to be classified as mid-rise.
- Mid-rise buildings have five to ten storeys and are equipped with lifts.
- High-rise buildings are considered to have more than 7-10 storeys.
- Skyscrapers have 40 storeys or more.
- Super-slender buildings are pencil-thin and of 50-90+ storeys.
Storey heights tend to be based on the ceiling height of the rooms in addition to the floor thickness. They are commonly 3 to 4.5 m, but can vary significantly depending on the room type. Storey heights can also vary throughout a building.
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), suggest that a 'storey' Includes any of the following:
NOTE: The building is regarded as a multi-storey building if both of the following apply. |
The Scottish Building Standards, Part I. Technical Handbook – Domestic, Appendix A Defined Terms, define a storey as: ‘…that part of a building which is situated between the top of any floor being the lowest floor level within the storey and the top of the floor next above it being the highest floor level within the storey or, if there is no floor above it, between the top of the floor and the ceiling above it or, if there is no ceiling above it, the internal surface of the roof; and for this purpose a gallery or catwalk, or an openwork floor or storage racking, shall be considered to be part of the storey in which it is situated.’
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Net zero electricity grids BSRIA guide NZG 5/2024
Outlining the changes needed to transition to net zero.
CIOB Global Student Challenge 2024
Universitas Indonesia wins for second year running.
New project and cultural district described in detail.
The nature of EPCs, crticism and inaccuracies.
History, issues and redesign.
From waste recycling to energy performance the hierchy.
An introduction to WERCS and WEEE responsibilities
Dealing 2 million tonnes of waste equipment a year.
Global BACS Market: analytics and optimisation
A BSRIA glance at building automation and control systems.
What it is and how to use it.
Types of insulating plaster by binder and insulant.
Investors in People: CIOB achieves gold
Reflecting a commitment to employees and members.
Scratching beneath the surface; a guide to selection.
ECA 2024 Apprentice of the Year Award
Entries open for submission until May 31.
UK gov apprenticeship funding from April 2024
Brief summary the policy paper updated in March.
For the World Autism Awareness Month of April.