Across
- 3. a rigid framework of beams joined together
- 4. metal a sheet of metal that is shaped into a series of pleats or triangles
- 5. the number of elements of good design
- 7. long beams in the shape of hollow rectangular prisms
- 9. a curved structure that can support a lot of weight
- 12. a solid structure that can stand by itself
- 13. when a structure has to face large combinations of internal and external forces
- 14. a shape that is known to be very strong and is found in many structures
- 15. a type of beam that has less weight than solid beams of the same length
- 16. the breakdown of a structure due to the internal and external forces acting on it
- 17. the balanced arrangement on opposite sides of a structure
- 18. a model used to test and evaluate a design
Down
- 1. when a structure cannot withstand the load and cracks on it
- 2. when the flaws are serious on a product the manufacturer removes the product from the public
- 6. a flat structure that is supported at each end
- 8. is determined by whether the structure is solid, fram or shell
- 10. the point at which a body's mass is concentrated
- 11. arches, beams and columns known to add strength in buildings
- 12. a flat structure that is supported only at one end