3.17.2 Dimensions for Double-Groove Welds
In line with the general principle, and irrespective of its appearance on one or both sides of the
reference line, each weld symbol must be accompanied in the welding symbol with all the data
necessary for the preparation, fit-up and execution of welding.
The principle applies to all double-groove welds, and it makes no difference whether the data is
identical on each side of the reference line or not. However, the size of the root opening, being
common to both sides, need only appear once.