Yes they were slip critical bolted beam to column connections. The tops of the beams where nelson studs were added needed to be sanded down as well for proper weld connection. The rust wasn't specifically flaking off, only at some areas where the water had ponded on the steel. I've attached some...
A previous structural steel subcontractor and general contractor fabricated steel on my project. The entire project got delayed by approximately six months and the delivered steel sat outside in the elements during this time. The new steel rusted, and had "above average industry standard" rust...
I have a question about the protection zone for a moment frame connection beam to column connection. Detail 5/S103 shows spacing for slab deck edge at 4"-0" OC. Detail 10/S103 shows no connection at the protected zone for the beam webs. In order to advoid the RBS protected zone, the inspector is...