1. S T R U C T U R E S

3. - Frame structures Pag 5

4. - Shell structures Pag 6

5. - Arch Pag 7

6. - Mass structures Pag 8

7. - Suspension structures Pag 9

8. structural elements Pag10

10. elements Pag12

11. -Transional strain Pag14

12. -Comprension forces Pag15

13. -Shear strain Pag16

14. -Tension forces Pag17

15. -Bending forces Pag18

16. Monuments Pag19

19. Shell structures

20. Arch

21. Mass structures

22. Suspension structures

24. They are composed of long elements joined each other.The elements are made up of strong materials

27. Are many types,but semicircular arch is the most used.

28. The stone at the top is called 'keystone'

30. It is normaly thick

31. Mountains and corals reefs are natural examples

33. The space betwen two columns is called span

35. In a structure, the forces for every elements are calculated and the element is designed to withstand them.

36. The structural elements are:

37. foundations joined to columns and primary and secondary beams

39. Permanent unions:structures not need to be disassembled

40. Non-permanent unions:elements can be disassemble and assembled

43. Comprenssion forces

44. Shear strain

45. Torsion forces

46. Bending forces

53. b u i l d i n g s

54. Suspension structures

55. Frame structures

56. Arch

57. Mass Structure