Re: Running new hot and cold lines for renovated bath
Posted by Bartman on February 03, 2004 at 02:23:05:
In response to Re: Running new hot and cold lines for renovated bath
I really prefer copper to plastic, although neither will stand up to a drywall screw...plastic grows more when it heats up than copper, and will require more support. Make sure you don't use female pipe thread CPVC fittings; your transitions should have male threads on the plastic. Although they are sold in stores, most codes don't allow the use of female plastic fittings in residential plumbing as they break quite easilly when threading metal pipe nipples/fittings into them.

The only potential problem to your plan is the hole size in the 2 x 4 studs, unless your branch lines are 1/2" pipe and not 3/4".

"Notches in solid lumber studs shall not exceed 25 percent of the stud depth. Bored holes shall not exceed 40 percent of the stud depth and the edge of the hole shall not be closer than 5/8 inches (15 mm) to the edge of the stud. Notches and holes shall not occur in the same cross-section."

A 3.5" deep 2 x 4 can't have a hole bigger than .875 (7/8") which is the OD of 3/4 copper pipe or 1/2" steel pipe. Doesn't leave much clearance for the pipe to slide through. Always use mail plates to protect the pipes where they go through studs or plates.

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