Across
- 1. two force member
- 4. supporting structure
- 6. a central stone at the summit of an arch
- 8. extend from side to side
- 9. a structure built to support pressure
- 10. a structure built on top of something else
- 11. engineering that deals with design and construction
Down
- 2. structures from suspension wires
- 3. curved structure
- 5. being stretched tightly
- 7. force pushing down