Structural (adjective)

1. Relating to the structure of something.
2. Relating to the way in which the parts of a building, bridge, or other structure are put together to support and resist loads.
3. Relating to the construction of something.
4. Relating to the organization or arrangement of the parts of a system or society.

Origin:

Late 18th century: from french structurel, from structure.

Examples:

1. The building had structural problems.
2. The engineer checked for structural integrity of the bridge.
3. The structural design of the building.
4. The structural change in the economy.
5. The structural reform of the government.