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1. Building Materials :

3. Petreous materials, Biender materials, Concrete, Ceramic materials and Others.

4. Construction of buildings:

5. Seven steps.

8. >Compact stones:blocks oflimestone, granite, marble...

9. >Disgragated stones: fragments of stones such as arids and clays. There are two types: fine and coarse.

10. >Petreous materials:

12. >Lime: it comes from limestone.

13. >Gypsum: with water, it is used to cover walls and roofs.

14. >Cement: it is the most used biender material.

15. >Biender Materials:

17. >Mass: formed by water, cement and sand.

18. >Cyclopean: formed by cement, water and very big arids.

19. >Cellular: it has bubbles inside, so that they are lightier and better termic insulator.

20. >Reinforced: it has bars of steel inside, so that they are stronger.

21. >Concrete materials:

23. >Bricks: they have prismatic forms and holes.

24. >Roof tiles: used in roofs.

25. >Tiles: square shaped pieces used in bathrooms and kitchens.

26. >Porcelain: it is used for bathroom's sanitaries.

27. >Stoneware: made of clay, quartz and feldspar, it is used in roofs and walls.

28. >Ceramic materials:

30. >Metals: the most used are:

31. -Steel: used for reinforced concrete.

32. -Aluminium: for doors, windows...

33. -Copper: instalations of water, gas and heating.

34. >Wooden: used in roofs, doors, windows, floor...

35. >Plastic: artificial materials used in plumbs, cables, windows, flooring, enclosures...

36. >Glass: in windows, doors, decoration...

37. >Other materials:

39. By demolition, earth moving and leveling.

40. The used machines are heavy machinery.

42. Placement of the elements that hold up the building. They are made of mass and reinforced concrete. There are three types: zapatas, pilotes and losas. By excavators and cranes.

44. The pillars and the forges are constructed. Pillars are made of reinforced concrete. The forges are made of beams and vaults. Machinery: cranes.

46. It is the placement of the roof of the building. It depends on the climate of each place. It has insulations. There are 2 types:

47. mixed roof tile and arabic roof tile.

49. It consists of the exteriorm wall of the building. It is made of bricks and a termic and acoustic insulators, called polyurethane

50. foam.

52. -Cloison is to separe the rooms. The walls are not as thick as in cladding. Itis made of bricks and plasterboard.

53. -Flooring is the floor of the different rooms. Types of flooring:

54. -terrazzo, marble, wood, granite, stone, synthetic, laminated and sandstones.

55. Flooring and cloison:

57. >Finishing:

58. -exterior: marble facings, peinture, mortars..

59. -interior: peinture, limestone, furniture...

60. >Other facilities:

61. -plumbing, heating, electrical, air conditioning, alarms and intercorms, tv, radio, telephone, internet and others.