[MW:6492] Welder Qualification and reinforcement

Hi Guys,

1) I wonder why we will not consider the reinforcement and Root penetration in welder qualification thickness range..? as this is also a form of weld deposition.

2) Can we weld a 25 mm thick plate using 2 welders each is qualified to weld 20mm.Welding code is AWS D 1.1

Hope to have your helpful answers.

Thanks & Regards,

Ather