The city's building codes enforce full high-rise standards for buildings over 80', causing a big step change in construction costs at 80'. 8 stories in 80' is possible but very tight, so you see a lot of buildings up to 6/7 stories under the low-rise standards, and then another group of buildings at 12 stories and up under the high-rise standards where the added unit count starts to balance out the higher construction cost.
These 9-story buildings are probably between 90' and 110', so they are solidly in that no-go zone.
It's not really about whether you have an elevator or not, but about what kind of construction type, what kind of sprinkler system, etc. Chicago has adopted a new building code, too, so the calculus behind these decisions is changing.
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la forme d'une ville change plus vite, hélas! que le coeur d'un mortel...
Last edited by ardecila; Feb 26, 2020 at 4:23 PM.
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