Hello Gurus, I am new to mechanical design calculations. Since I have came across one interesting fact there are two methods using for finding the shear capacity of the components. Yield Strength and Ultimate strength. Shear yeild strength=1/√3* Yield strength Ultimate shear strength= .75 of of Ultimate strength Up on these shear capcacity calculations are made. What is the signficance of the using two methods for the design calculations? Either one is enough?