1. STRUCTURES AND FORCES

2. TYPES OF STRUCTURES • Frame Structures • Shell Structures • Arch Structures • Mix and Match • Mass Structures • Suspension Structures

4. These structures are composed of long elements.

6. They are like a strong and hard coat that maintains the require shape

8. The stone at the very top is called the keystone

11. The structure is normally thick.

12. Advantage: Held in place by its own weight.

13. Disadvantage : Heavy need much material.

15. Are often best for bridges.

16. Good for covering a very large span.

18. They are meant for structures that will not needed to be disassembled.

20. Are those designed to assemble and disassemble the element of structures .

21. Nuts, bolts, clamps, friction...

23. Compression forces

24. Shear strain

25. Torsion forces

26. Bending forces

28. It can be due to forces

31. A good example are when we cut with the scissors

34. BY: Manuel Folgado and Ramón Barrabés