Resaurant Sink Drains, did I screw up? ABS vs Copper

I went to a restaurant last week and had to rebuild the drain on their bar sink which drains into a floor drain.
It was 1-1/2" copper with tight 90's and no clean outs. The bartenders keep dropping straws down the drain and clogging them. And there is no easy way to repair.

I rebuilt the drain long sweeps, clean outs etc.... All good but I used ABS pipes.
Now that I've walked home and am thinking about it I wonder, about half of the restaurants seem to have copper, and the other half ABS.

Just because they use ABS does not mean that it's valid.....

Location: Sacramento, CA

Thanks Mike

I prefer plastic and ABS for restaurants, at least for in the bar. Copper perforates after a while in those locations.

should be PVC DWV SYS 15

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