Putting the aesthetics aside, I am not sure but I don't know that 1/3 of the amount of steel compared to x thickness of glass would be stronger. Thin steel is pretty flexible. We would need a structural engineer to weigh in. 

grayruby

Construction_and_Engineering

"Tallest tower in Nebraska" by Pickard Chilton under construction in Omaha

BlokchainB

Wouldn't a steel sheet be lighter for a given amount of strength over a surface area? 

Looks like [steel is ~3x the weight of glass](https://mojobob.com/roleplay/weight_chart.html) per unit of volume, but I bet thinner steel could be used than what we'd use for glass.