Civil Engineering - Building Materials - Discussion


Knots in timber are

[A]. defects caused by crushing fibres
[B]. splits radiating from the centre
[C]. speckled strains
[D]. signs of branches cut off.

Answer: Option D


No answer description available for this question.

Dipen Tilva said: (Jan 11, 2017)  
Knot- it shows the root branches which are broken or cut of the tree.

Shakes- It is the result of rupture of tissues causing partial or complete separation of the along grain.

Heat shake- it occurs due to shrinkage of the inner part of the trunk. They start from the heart, extend in a redial direction perpendicular to the annual rings.

Star shake- these are redial cracks start from the park and extend towards inner portion.

Cup shake or ring shake- they are curved cracks parallel to annual rings.

Rrp said: (Apr 12, 2018)  
What is the difference between knot and Rindgall?

Anku said: (Aug 19, 2018)  
When cut off irregular manner then rind gall.

Rinku said: (Nov 24, 2020)  
Thanks @Dipen Tilva.

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