I am remodeling my kitchen which is on the first floor. Right above the kitchen is full bath. All second floor bath fixtures batt outside wall. As 2 X 8 joist run perpendicular to that outside wall and the wall is framed with 2 X 4 all second floor fixtures drains are not hidden inside plumbing wall but instead ugly hang a foot or so from the wall inside space above the kitchen cabinets. I do not think the venting is correct. Curently drains from bath tub, toilet and lavatory come almost to the same point in 3" drain vent stack (they are not exactly in the same point, may be a foor apart) and 3" vent continues through the rough. Is it correct venting? I thought all individual vents for each fixture should go up and then connect to main vent stack 6" above flooding level of higherst fixture, it means in the artic. First, I need to do something to hide all drains as right now they break entire kitchen, I do not want to close space above new kitchen cabinets. What's the best approach to do this? What maximum size of holes can I drill in 2 X 8 joist close to the end? I obviously cannot dril holes for 3" toilet drain but can I drill holes for 1 1/2" or 2" in PVC pipes?
- posted
18 years ago