Hello to all. I am new to this forum and am seeking advice. My wife and I re-configured the kitchen in the home we recently purchased. The sink is in a corner now and the drain cannot feasibly go inside the wall. I have run the drain through the inside of the base cabinets to the original entry point into the concrete slab the house is built upon but I will be installing a dishwasher and the only way around it would be to drop the drain with a 90 degree elbow down to close to the floor, go under the dishwasher at the back, and then back up to the original downward slope of the drain. It would