- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 01 Apr 2019
In modern usage, the term ‘lavatory’ (UK pronunciation: ‘lavah-tree’) describes a room or cubicle containing sanitaryware or other receptacles for the passing of human waste. The sanitaryware will usually be connected to a public drainage system.
When used to describe a room, a lavatory may also contain other sanitaryware, such as a bath, shower, urinal or bidet. Other ancillary facilities may typically include wash-hand basins, hot air dryers, towels and mirrors.
The term lavatory is sometimes used synonymously:
- WC (although this more correctly refers to the water closet sanitaryware itself)
- Bathroom (if it contains a bath)
- Ladies / gents
- Sanitary convenience
- Powder room
Historically, a lavatory was a cistern or trough where the inmates of monastic establishments could wash their hands and faces, as well as their surplices and vestments.
In southern Germany, lavatories took on grander functions that resembled those of baptistries. They would be either square or octagonal chambers to the side of a cloister and would have a series of water troughs for washing arranged around a fountain located centrally in the room.
Legal requirements for sanitary conveniences, washing facilities and bathrooms are set out in Part G of the building regulations, with solutions to common situations described in Approved Document G (Sanitation, hot water safety and water efficiency).
 Related articles on Designing Buildings Wiki
Featured articles and news
How to research a building when there are no primary sources.
A re-thatching project has supported a critically endangered skill.
What inspired the Metabolist movement in architecture?
A radical transformation of three agricultural barns.
How to evict a tenant
The top 10 priorities for health and wellbeing.
Why some clients make BREEAM a contractual requirement.
Raising the roof in Southwark.
The difference between consultant switch and novation.
CIAT has been promoting the discipline in India.
Ensuring thermal comfort and allowing users to control their own environment.