Calculate the maximum load, tensile stress, shear stress, and crushing stress for the tie bar in the given lozenge joint.

To calculate the maximum load carried by the tie bar and the maximum axial stresses, we first determine the allowable stresses by dividing the ultimate stresses by the safety factor.

Given data:
Main plate width ($W_p$): $260 \text{ mm} = 0.260 \text{ m}$
Main plate thickness ($t_p$): $28 \text{ mm} = 0.028 \text{ m}$
Cover strap width ($W_c$): $250 \text{ mm} = 0.250 \text{ m}$
Cover strap thickness ($t_c$): $16 \text{ mm} = 0.016 \text{ m}$ (There are two