{"id":19,"date":"2025-09-23T04:30:33","date_gmt":"2025-09-23T09:30:33","guid":{"rendered":"https:\/\/plumbing101.i234.me\/wordpress\/?p=19"},"modified":"2025-09-23T04:30:33","modified_gmt":"2025-09-23T09:30:33","slug":"basement-bathroom-drain-slope-issues","status":"publish","type":"post","link":"https:\/\/plumbing101.i234.me\/wordpress\/basement-bathroom-drain-slope-issues\/","title":{"rendered":"Basement Bathroom Drain Slope Issues"},"content":{"rendered":"

Basement Bathroom Drain Slope Issues<\/h1>\n

Basement remodels can be stressful, especially when the budget forces you to do the plumbing yourself. A common challenge is working with drains and vents under a concrete slab. Today we\u2019ll answer some key questions to help guide your project.<\/p>\n

Q: How do I know if my drain slope is enough under a slab?<\/h2>\n

A: The Uniform Plumbing Code requires a minimum slope of 1\/4 inch per foot for 2-inch drains. For 3-inch drains, 1\/8 inch per foot is allowed. Always measure carefully before cutting concrete. If depth is limited, consider rerouting or using low-profile fittings.<\/strong><\/p>\n

Q: Where should I put a cleanout?<\/h2>\n

A: Place an accessible cleanout at the end of the main line. Near the toilet is common, but be sure it remains accessible once walls or flooring are installed.<\/strong><\/p>\n

Q: Can I connect PVC to a galvanized vent with a Fernco?<\/h2>\n

A: Yes, but only use a banded Fernco (shielded coupling) above ground. Unshielded couplings are not allowed inside buildings under UPC codes.<\/strong><\/p>\n

Q: Is a horizontal wet vent legal?<\/h2>\n

A: Under the UPC, horizontal wet venting is limited. A safer choice is to install individual dry vents for fixtures. This adds work but avoids inspection issues later.<\/strong><\/p>\n

Extra Tips for Your Basement Bathroom<\/h2>\n