We recently had our basement redone,, a new slab poured and new underground sewer drawings installed. Traps were installed for all new fixture locations.
The work was completed about 2 months ago.. and more recently.. we have been smelling sewer gas. It seems to occur primarily when our washing machine is running. My concern is that we did not install a laundry tub for lack of room. The washing machine drain empties directly into a pipe that sticks above the floor 1" , is trapped below the slab,, and runs down into the sanitary. I'm concerned the pressure of the washing machine is sucking the vents dry.. any suggestions? Thankyou in advance.