What does subgrade mean in construction?
Short definition
Subgrade is the prepared soil surface that supports pavement, slabs, foundations, or other construction above it.
Longer explanation
Subgrade conditions affect settlement, drainage, compaction, and long-term performance of the work placed above.
Example in context
“The project team reviewed the subgrade during the construction phase.”
Common users
- Owners
- Architects
- Contractors
- Construction managers