According to Unwin’s formula the nominal diameter of rivet is

Answer: B. 6√t

According to Unwin’s formula the nominal diameter of rivet is 6√t.

Solution

Unwin’s formula is used to calculate the nominal diameter of the rivet. 

According to the Unwin’s formula,

d = 6.04√t

where, d= nominal diameter of rivet in mm

 t= minimum thickness of plate in mm

More information about rivet:

 Rivet is used to connect the two structural members such as bearing plates, columns and beams etc.

To connect the member with a rivet, it should be heated first then it is driven into the hole. After cooling, the diameter of the rivet slightly reduces but it is taken as the original diameter.

Strength of the rivets should be such that it can bear the forces which are going to transfer through the members.

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