That’s usually a floor drain. You can prevent a sewage-filled ... Screw in and then remove a six-inch long section of 2-in. threaded steel pipe (sold at home centers). The tapered threads ...

you can still install a basement drainage system. When you break out the concrete, leave small sections of floor intact so the wall doesn't drop down. A 4 x 4-in. section every 6 ft. is enough to ...