- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 18 Feb 2019
‘Grade’ is a term used to describe the level of the earth at a specific location or at ground level. In construction, the terms ‘above grade’ and ‘below grade’ can be used respectively to describe the portion of a building that is above or below the ground. In tunnelling, the invert of a tunnel may be described as being 25m below grade or ground level.
In the US, an ‘at grade’ intersection will have roads or rail tracks – or a combination of both –arranged on the same level. Where a road and rail track intersect at grade, a level crossing will normally be in place. A river may also be said to be at grade (or level) with the land (as opposed to being in a deep valley).
 Related articles on Designing Buildings Wiki
Featured articles and news
1 minute read.
An alternative to secondary ventilation stacks in tall buildings.
How to deliver the infrastructure the country needs.
Protecting employees from hearing damage.
One of the largest office buildings in the world.
Who holds the risk for COVID-19?
Insights from New York.
A quick introduction to a very complicated subject.
CIOB suggests the economic reach of construction is double the official figures.
The first US building to achieve BREEAM Outstanding In-Use.
70 buildings from 70 years of Concrete Quarterly. Book review.