Fire safety, not the strength of wood framing, is what blocked this type of construction before. Effective sprinkler systems are what addressed that concern. T

Fire safety, not the strength of wood framing, is what blocked this type of construction before. Effective sprinkler systems are what addressed that concern. There remains a concern about fire safety during construction, before the sprinklers are activated. There have been serious fires and deaths of construction workers while these buildings were going up.