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Unterbau

German → American English

American English

substructure

untere tragende Struktur, die etwas stützt oder trägt; basis, auf der etwas aufgebaut ist

Der Unterbau der Straße muss dringend saniert werden.

Unterbau is a technical noun, common in engineering, architecture, and infrastructure. It usually refers to the supporting part beneath a larger structure, not a literal “bottom build.”

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Frequently asked questions

What does “Unterbau” mean in English?
“Unterbau” usually means “substructure” or “foundation,” depending on the context.
Is “Unterbau” the same as “Fundament”?
Not exactly. “Fundament” is the foundation of a building, while “Unterbau” can also mean the supporting structure or base beneath something broader.
How do you use “Unterbau” in a sentence?
You can use it for the supporting part of a road, machine, building, or system, for example: “Der Unterbau der Brücke wurde erneuert.”
Is “Unterbau” a technical word?
Yes, it is commonly used in technical, architectural, and engineering contexts.