How House Construction Works

Rough Plumbing

Rough plumbing involves installing all of the water lines, sewer lines and bathtubs. Tubs are normally installed early because:

  • One-piece shower-and-tub units are big and often cannot be maneuvered into place later in the construction cycle. They also frequently "change size" -- that is, the size drawn on the plans and the size delivered often differ significantly.
  • A full tub is heavy. Therefore, the tub is installed and filled so that the frame can settle quickly. This step prevents cracked walls and tile the first time someone uses the tub.

Typically, rough plumbing involves installing all sewer lines and vents as well as all water supply lines for each fixture. Here's a typical sink fixture:

Here's the fixture for a washer:

How House Construction Works

The tub is put in place and filled. Note the framing problem being corrected on the left side of the tub because the tub changed size:

How House Construction Works

Here are the lines for the tub:

How House Construction Works

In the crawl space, the supply lines all branch off from common pipes running the length of the house:

How House Construction Works

The sewer lines all join together...

How House Construction Works

... and then exit out the back of the house, ready for connection to the septic tank:

How House Construction Works