A single bolted double cover butt joint is used to connect two plates which are 8 mm thick. Assuming 16 mm diameter bolts of grade 4.6 and cover...
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A single bolted double cover butt joint is used to connect two plates which are 8 mm thick. Assuming 16 mm

diameter bolts of grade 4.6 and cover plates to be 6 mm thick. Calculate the efficiency of the joint, if four bolts are provided in the bolt line at a pitch of 45 mm. Assume grade of steel Fe410, kb = 0.55 & thread intercept shear plane.

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Eff 1.jpg

Failures are :
SFB
"> Volsb
8 8
6
fub = 400 BFB
6
fu = 410
BFP -
Vapb ( fub < fu;
bolt will fail in
TFP -> Tap.
bearing )
IP
For wide plate,
O
Efficiency of the connection
O
n =...

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