Bearing Of Milled Surfaces

In building construction, allowable bearing stress for milled surfaces, including bearing stiffeners, and pins in reamed, drilled, or bored holes, is F_p= 0.90F_y, where F_y is the yield strength of the steel, ksi (MPa)

For expansion rollers and rockers, the allowable bearing stress, kip/linear in (kN/mm), is
F_p = ((F_y– 13)/20) 0.66d
where d is the diameter, in (mm), of the roller or rocker. When parts in contact have different yield strengths, F_y is the smaller value.