Structural steel is not, generally speaking, considered 'likely to become energized.' You don't have to bond even the largest I-beam.
If there is an appliance that might fail, and energize the steel, that is a different situation, and the bonding is accomplished at the appliance.
The only bonding issue regarding structural steel is where that steel is going to be used as the grounding electrode - for, say, a transformer. I would certainly hope no one is using sheet metal as the ground when they 'create a neutral' at a transformer!
In nearly every other circumstance, the incidental bonding that comes about in the course of normal construction is perfectly adequate; there is no need for bonding lugs or jumpers.
