Timber is wood suitable for building or carpentry that comes from trees in three forms: rough timber obtained after felling, converted timber cut into sizes for commerce, and standing timber contained in living trees. Timber has properties like low heat conductivity, ability to be worked mechanically, and high strength, but is also flammable and prone to decay and moisture-related property fluctuations. There are three main types of timber: hardwoods, softwoods, and manufactured wood products.

1. INTRODUCTION
 Derived from the word timberian , that means to build
 Denotes wood which is suitable for building or carpentry.
 Three terms to be known in connection to the timber.
Converted timber: sawn and cut into suitable commercial
sizes.
Rough Timber: obtained after falling of tree
Standing Timber: Timber contained in living tree
Valuable properties:
»Low heat conductivity
»Ability to do mechanical working
»Small bulk density
»High Strength
 Drawbacks
»Decay
»Inflammability
»Fluctuation in properties due to changes in moisture

5. ELEMENTS OF
TREES

6. IDENTIFICATIONS OF
TIMBER

7. MECHANICAL
PROPERTIES

8. DEFECTS IN
TIMBER

9. Timber is the general name of wood
 There are three main types of timber :-
 HARDWOOD
 SOFTWOOD
 MANUFACTURED WOOD

10. HARDWOOD

11. SOFTWOOD

12. MANUFACTURED
WOOD

13. Manufactured product of Timber

15. Advantages of Timber

16. Use of timber as a Building Material

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