I want to install the washing machine in the basement. There is a 2" kitchen waste pipe 2' away from the proposed washing machine location. The kitchen waste pipe is connected to the 4" sanitary sewer below the basement floor. There is also a 2" vent pipe that is connected to the kitchen waste pipe. I have two options with connecting the washing machine waste pipe, one is through the basement floor or along the basement wall. The latter will have two 90 bends. Can I use the second option? Do I need to run a separate vent pipe from the washing machine waste pipe to the kitchen vent pipe?