Vocab structures

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Across
  1. 5. mental moral strength power
  2. 6. a mechanical force applied slowly
  3. 9. state of being stretched tight
  4. 10. two piece wood 90 degree
  5. 12. break off
  6. 13. increase in pressure
  7. 14. sheet of steel joining steel
Down
  1. 1. wood joined by removed material
  2. 2. bracing with cross struts;ties
  3. 3. two timbers halved together;flushed
  4. 4. engineer works on large structures
  5. 7. tall building
  6. 8. one that constantly changes
  7. 11. the state of being twisted