Structures Part 2

12345678910
Across
  1. 4. Steel rods used to reinforce concrete to help resist tension.
  2. 7. A bridge that can span large gaps without many towers because it uses cables.
  3. 8. A flat, plate like device that is often triangular.
  4. 10. A structural support that is placed below a beam.
Down
  1. 1. A beam that is only supported at one end. Hint: A diving board or tree branch.
  2. 2. A reasonably level structure used to support loads. Hint: Top of doorway.
  3. 3. A network of beams that form triangles.
  4. 5. The use of ridges, grooves, or folds to help make a structure stronger. Hint: Often used in cardboard.
  5. 6. A shell like structure that looks like the top half of a shell or egg.
  6. 9. A structural support that is set between a beam and its support base.