Inspectors in Seattle are usually fine with 1.5" no hub bands connecting standard strainers to schedule 40 abs. Pretty easy to disassemble and clean.
If they're stop and waste style strainers, it seems that more cop dwv is spec'd out, we use a 2" fip that works pretty well, then if a grease interceptor is to be installed , it's vented and tied into the sanitary. If none then all the compartments are indirect into the floor sink with a cleanout at the first compartment upstream. Love seeing them direct connected, clogged, and no way to get a snake in the line.... Not.