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This type of comment has no basis in fact.
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Quite a bit of that going on in this thread...
From the incorrect statements about rebar...waterproofing, etc.
Usually the only variable to concrete delivered to a job site is the amount of water in the mix. Typically central mix concrete is batched with 90% water added at the plant.. A 10% window is allowed for adjustment at the site for workability, etc..
Of course sometimes a contactor will add water such that the mix now has 125% design water in it.. so the laborers and finishers don't have to bust ass so much.. even with extra added water , the concrete cylinder breaks exceed the design strength!
Now batching is quite accurate.. sand, stone, cement, admixtures are scaled and added automatically...in the 80's it may have been a guy watching from a dirty window, looking at scales.. and a guy climbing on a truck dumping some air entrainment or retarder in the drum..
Transit and truck mix concrete are rarities in the NYC area..
This failure will probably be blamed on lack of preventive maintenance... The building was probably shoddily built...but I bet little or no maintenance has ever been done..