Across
- 2. A curved symmetrical structure
- 7. A structure built on top of something
- 8. A substructure at the end of arch or span
- 10. The central stone of an arch
- 11. A force when members are pushed together
Down
- 1. A smaller add-on to an original structure
- 3. Someone who designs or works in architecture
- 4. structure Bridges that are held by many poles
- 5. A bridge consisting of triangles
- 6. The full length of a bridge
- 9. A force when members are pulled apart