structural
US /ˈstrʌk.tʃɚ.əl/
UK /ˈstrʌk.tʃɚ.əl/

1.
relating to the way in which the parts of a system or object are arranged or organized
:
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The architect focused on the structural integrity of the building.
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There are some deep-seated structural problems in the economy.
2.
of or relating to the structure of a building or other construction
:
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The bridge suffered severe structural damage from the earthquake.
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Engineers are inspecting the building for any structural weaknesses.