If the beam web becomes too thick relative to the skew angle, the root opening will begin to exceed 3/16 in This limit is the maximum root opening allowed by AWS for a fillet weld.
If the opening is 3/16 in. or less</strong>, the fillet weld size must be increased by the root opening dimension.
If the root opening provided by the unbeveled web or plate exceeds 3/16 in, the plate or web must be beveled.