Civil Engineering - Building Materials - Discussion

41. 

The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:

[A]. radial shakes
[B]. heart shakes
[C]. wind cracks
[D]. twisted fibres.

Answer: Option C

Explanation:

No answer description available for this question.

Surendra S Dangi said: (Jul 15, 2017)  
Heart shake is a crack in the heartwood, near the centre of the tree. It is caused by poor seasoning, or by using trees felled past maturity.

A crack or cracks propagating from near the edge of the log towards the centre, usually along the line of the medullary rays.

Answer C.

Nayan said: (Aug 31, 2017)  
I think it is option A.

Pushap said: (Jan 3, 2018)  
Yes, A is correct.

Ganesh said: (Jan 7, 2018)  
It seems the correct answer is radial shakes.

Ankit said: (Feb 6, 2018)  
A is the right answer.

Niraj said: (Aug 2, 2018)  
C is the right answer. I agree with the given answer.

Abhishek said: (Sep 10, 2018)  
A should be the correct answer.

Pravardhan said: (Feb 21, 2019)  
If the wood is exposed continuously to the high-speed winds, the outer surface shrinks and forms crack externally which are called wind cracks.

Saugat Oli said: (Feb 27, 2019)  
As per my knowledge, Star Shake is the correct answer.

Dibakar said: (Jul 23, 2019)  
Wind cracks= cup shak.

Radial shake= star shake.

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