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Unfortunately the cheapest premade grease/oil trap I could find is closer to $1000 now. There are ways of building your own but I spoke with our local plumbing inspector and floor drains can be run to daylight without issue.

Do you have the shop built now and how do you like this setup?

You may have a good point there. Might just have to do a trench drain parallel with the doors and slope the first 20’ toward the door.

Daylight

Drains would be for snow melt, rain and the occasional washing of a vehicle. That said, I’ll be putting heat in the floor, so snow melt and rain will evaporate pretty quickly in the winter

I edited the original post to add more details/info

No inspections whatsoever here for residential shops.

Hello everyone. I’m looking for opinions on shop floor drains. My initial plan was using 4 12x12 basin drains (marked by the red circles) but I’ve been debating if I’d be better off doing two long trench drains (blue) or maybe a trench drain on the right and the basins on the left. For a little...