Plate material for built-up columns/rafters

[jpw2913]

Can anyone tell me what the ASTM designation is for the steel plate used in making built-up members, such as the columns and rafters in pre-manufactured buildings? I need to know the ASTM designation (A??). I need fy = 50ksi material. Any help is appreciated!

 

[MiketheEngineer]

I would have to think most are A50 - but check with mfg

 

[ToadJones]

50 ksi plate is typically ASTM A572 Grade 50 in the U.S.