We are remodeling our kitchen and considering an undercabinet sink, and also want a disposal. The drain line is 18" from the underside of the 1.5" thick countertop. The sink is a stainless steel 70/30 model, with the larger side 9" deep and the smaller side 6 5/8" deep.
Is there enough room to mount a disposal under the sink and still have room for the p-trap?
By my calculations, the bottom of the larger bowl will be 9" above the drain pipe and the smaller side will be 10 3/8" above the drain pipe. A basic disposal shows 7 3/16" from the bottom of the sink to the centerline of the disposal pipe (given the 1/2" addition for a stainless steel sink).
That seems like it will be enough room to install a disposal on either side and still have enough room to properly install the p-trap since it will start 2" above the drain pipe.
Is my math and understanding correct?
Note: lowering the drain line would be expensive at this point, so that option is not being considered.