ASME B31.5 refrigeration piping 1

[spike]

section 502.3 allowable stresses.
502.3.1(b) For structural grade material a quality factor of 0.92 shall be applied.

Does this mean to multiply the allowable stress by 0.92 or to divide the allowable stress by 0.92?

 

[bvi]

multiply (same as other types of quality factors). The allowable stress for structural grades is reduced.