Boston02124
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- Sep 6, 2007
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Re: 120 Kingston, 29 Story Tower in Chinatown
Forgive my ignorance but is building the entire core before erecting steel a new construction trend? I don't recall seeing many buildings built that way until somewhat recently (maybe 2-3 years). I have, of course, seen the core rise much faster than the steel but I am not sure I remember buildings where most or all of the core is complete before significant steel starts to rise.
Requires hardening of exit stairway and passageway enclosures and elevators shaft enclosures in buildings. This requirement applies to all buildings over 420 ft. in height. It also applies to buildings between 75 ft. and 420 ft. in height that represent a substantial hazard to human life in the event of failure (e.g., buildings with occupant loads exceeding 5,000 and essential facilities, such as hospitals.) The hardening requirement is based on ASTM Standard 61629/C1629M-06 for gypsum and fiberreinforced cement wall enclosures. Concrete and masonry enclosures are deemed to satisfy this requirement.
This is the 9/11 rewrite, correct?