TIMBER IN ENGINEERING

TIMBER

           Timber is an old age building material, the term 'Timber' means the wood of sufficient size, which is suitable for engineering construction purpose. It is applied to the tree measuring not less than 60mm width. Timber is used in building construction in various locations such as beams, trusses, rafter, floors, roofs, doors, windows, ploes,staircases, piles, column etc. The word timber mean "to constrct or to build". However, the use of timber is going to decrease due scarcity, high cost of labour and timber, availablity of cheaper and stronger material.

USES OF TIMBER IN BUILDING MATERIAL

•   Timber is used for flooring, ceilling, panelling.
•   Timber is used plies, beams, lintels, doors, windows, roof member.
•   Timber is used in raftlers, purling, trusses. 
•   Timber is used for interior decoration. 

QUALITY OF TIMEBR

• Appearance
• Colors 
• Defects
• Durability
• Toughness
• Strength
• Soundness
• Hardness

Appearance

        A good timber should have hard and shining appearance.

Colors

      The colors of timber should always dark. The timber having light colour indicates low strength timber.

Defects

     A Good  timber should be free from defects such as flaws, shakes, knots.

Durability

    A Good timber should be durable enough to capable of resisting the action of fungi, insects, chemicals, physical agencies and mechanical agencies.

Toughness

   A  Good timber should capable of offering resistance to the shocks due to vibrations.

 Strength

      A good timber should have sufficient strength to work as joist, beam, rafter etc. It should possess enough strength in direct and transverse direction. 

Soundness

      A good timber should give out a clear ringing sound when struck. 

Hardness

      A good timber should hard enough and durable.


Defects Of Timber
Seasoning Of Timber