- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 09 Jun 2021
Meanings of level in the construction industry
In surveying, levelling is a process of determining the height of one point (or level) relative to another. It is used in surveying to establish the elevation of a point relative to a datum, or to establish a point at a given elevation relative to a datum. There are several different surveying instruments that can be used, all of which are loosely referred to as ‘levels’, for example, a spirit level.
The term is also used in relation to ground preparation and excavation, i.e. ‘level an area’. This means that the ground is made flat and of an even grade. This is important if works are to be carried out on uneven or sloping ground. In this context, the terms ‘level’ and ‘flat’ can be interchangeable, however, in other contexts they should be distinguished from one another. For example, when laying floor tiles; a level surface needs to be parallel to its perfectly horizontal plane, whereas a flat surface is one that does not have significant high or low spots.
In terms of project management, it be used in the context of ‘resource levelling’ which is a technique whereby the demand for limited resources is accommodated by adjusting the project programme. In construction, this can be used to analyse the large variations in resource usage that can occur over time, and which can be inefficient and costly. For more information, see Resource levelling.
 Related articles on Designing Buildings Wiki
Featured articles and news
Government announces global innovation strategy.
An architectural biography. Book review.
The house where the future king of France lived.
The teacher, architectural technologist and mum offers her insights.
Careful planning needed as supply chain issues continue.
The sensitive conversion of a neglected Cornwall structure.
Plan stresses local involvement in city, town and village development.
Environment Agency publishes BAT guidance.
CLC guidance outlines carbon reduction priorities.
Making the most of a staycation.
Organisation urges G20 to revisit wind energy.
The historian spent much of his life compiling architectural resources.