Step I

list bolt value

shear capacity of bolt=$\frac{fub\times Anb\times nn}{\sqrt{3}Ymb}$

=$\frac{400\times 245\times 1}{\sqrt{3} \times 1.25}$

Vdsb=45.26 kN

bearing capacity of bolt=2$\times Kb\times d\times t\times $fu

find kb

$\frac{e}{3do}=\frac{40}{3\times 22}$=0.60

$\frac{P}{3do}$=0.25=$\frac{80}{3\times 22}$=0.25=0.96

$\frac{fub}{fu}=\frac{400}{410}$=0.97

Vdpb=$2\times0.6\times 20\times10\times 410$

Vdpb=98.4kN

Step II

Direct force per bolt or load in each bolt

F1=$\frac{load}{No.\ bolt …