Mill Certificate vs. Design Yield Strength Structural ...
Jan 06, 2011· I think that you''re ok if the mill tests come back at 55 ksi or better, but you''ll be relying heavily on those mill reports because, as you noted, ASTM A500 Gr. B is only a 46 ksi minimum yield. Are you the EOR? Is the fabricator doing the design of these luminaires and you''re just checking it?