Emergency evacuation would be my first question about a rooftop location. Cost would be the second.
It can and has been done before: The Rooftop at Pier 17 in NYC comes to mind … but that’s roughly half the size of what’s envisioned for RHA, plus it’s in NYC where nearly infinite real estate money is available to do extremely ambitious things.
(I still haven’t heard anyone address the question of the block south of South Street…)
As @orulz just stated, it has been done before in NYC. Someone posted on here about another city in America (I think in the Midwest?) that has a rooftop amphitheater as well, a few months ago. I can’t find the post though. I’m not even saying that Raleigh should build one, per se. I’m just saying they should at least make it known that they CONSIDERED it.
Can you even imagine how heavy 7000 people people with a stage and seating would be on top of the convention center? Not at all saying it couldn’t be done. Just saying how expensive would that be? And what if someone got hurt and needed medical attention or a fire broke out? Seems a little more complicated than an outdoor venue as proposed. Just IMHO.
I am not the rooftop building expert so I will have to leave that to someone else. I am sure if the city has the $$$$ then someone can give them whatever they want with whatever egress they need.
Listening to the presentation by the committee that planned this, you can tell that she’s done an insane amount of work here and is completely pissed off at the idea that there’s a viable alternative with the budget we have.