The distribution and magnitude of bond stresses along a bar are difficult to establish quantitatively. One problem is the progressive shifting of the bond distribution along the bar as bond deterioration occurs near the loaded end. Moreover, it is difficult to verify which ribs are actually transferring loads and what share of the load is being resisted by each rib. As a way to deal with the complexities of actual bond stress conditions around reinforcing bars, a nominal or average bond stress determined by dividing the force in the bar by the nominal bar perimeter and the embedment length.