Practice cutting copper pipe and sweating joints before you kick off.
Copper supply lines are usually routed so they do not cross drainpipes or vents.
In most cases, it’s easier to make the horizontal runs in the crawlspace or basement.
Long runs and bends lower water pressure slightly.
Hammer arresters (Step 3) prevent banging noise when you turn off a faucet.
Hot water is always on the left, cold water on the right.
For example, the shower faucet in this plan calls for vertical pipes 10 inches apart.
Arrange Copper Supply Lines
Tie into existing copper supply lines.
A toilet stub out is usually 8 inches above the floor.
Dry-fit a complete assembly for the sink and the toilet.
Install a hammer arrester to each.
Sweat the Pipes
Sweat all the parts.
Anchor the pipes with at least one clamppreferably twoat each stub out as shown.
Attach Copper Supply Strap
A copper supply strap attaches to the face of the studs.
Pipes fit into notches or holes, sized and spaced for correct placement.
The pipes can be soldered onto the strap using the same techniques as for sweating fittings.
A drop-ear elbow makes the most secure attachment.
Insert a brass threaded nipple into the elbow.
This arrangement makes for smoother water flow and less loss of water pressure than using 90-degree elbows.
