[inigyou]

But big tanks do need extra support. This is a relevant thing to post in case someone is thinking about scaling it up.

The Pfizer building in NYC almost collapsed after they tried to build a swimming pool on the roof. This happens semi-regularly when building owners ignore, or don't consult, engineers about rooftop swimming pools. Every owner wants one and doesn't want to be told no.

[throwaway2037]

"almost collapsed"? Probably an overstatement.

If anyone wants to read more about this: https://en.wikipedia.org/wiki/Pfizer_Building#Structural_det...

    > This happens semi-regularly when building owners ignore, or don't consult, engineers about rooftop swimming pools.

Another wild overstatement. Yeah, I'm sure the city approved this office to residential converstion with a rooftop swimming pool that has no engineering analysis. "This happens semi-regularly": Can you provide other examples? I couldn't find any with a cusory Google search.

[knollimar]

Pretty sure the pfizer building was vertical expansion without reinforcement.

I dont think they got to the pools. I worked for a company that did a bid for the electrical work. Edit: there was a pool. Didnt have on plans at time

Second edit: looking at wrong plan. There was a pool but it was basically a blank plan with annunderdesigned roof.

[sokka_h2otribe]

Ok, they also added an entire building on top, not just a pool