Plumbing an island sink...code in MN?
It's looking like my kitchen sink will be in my island. We are building in MN. I've heard that there are issues with this, that code has changed in the last couple years. We are building on a slab, no basement or crawl space. So, do we need to have posts going up from the island to the ceiling for venting. And if we don't have the posts how does it get plumbed to code under the island? How much room is it going to take up in my island without venting up through a post...how much cabinet space will I lose...my island will be about 4 feet deep or more by about 8-10 feet long, sink will be centered on the long side of the island. Any plumbers out there have any knowledge on this?