Tuesday, January 19, 2010

More Plumbing Excitement

The photo below is taken in the bathroom area upstairs. Here you can see the vent line that comes up from the kitchen sink (below... on the main floor), the bathroom sink drain, and the vent that goes up through the roof.

The orange test caps are installed just so as to cap off the drain system until the plumbing inspection is done. They seal the system so that I can fill it up with compressed air and check for leaks. Once the inspection is done, I'll take the caps off and finish up.

Once the plumbing inspection is done, I'll put in a piece of pipe to connect the drain system with the vent through the roof (the blue lines). I left this section of pipe out for now... so that I could put the test cap here... inside the house. If I would have put this section of pipe in now, the test cap would've had to go up on the roof. I honestly don't know if the plumbing inspector will be okay with this idea, but I sure hope so. I don't want to have to get back up on the roof just to put on and then take off a test cap.

(Click on the photo to enlarge it.)

Sunday, January 3, 2010

Main Bathroom Drain Installation

I've started to install the drain system for the main bathroom. It's much easier to run the drain pipes parallel to the floor joists (i.e. in-between the joists), than to run them perpendicular to the joists (i.e. through the joists), but unfortunately I found it was unavoidable to have some of the pipes run perpendicular to the joists.

To install the drain lines I had to cut out some 4.5" holes in the floor joists. Although it seems that cutting such a large hole in the joist would weaken it, the engineering specifications for the joists do allow for holes of this size to be cut out.

Also, in an earlier post I mentioned that I was reinforcing the joists with plywood on one side so as to stiffen up the floor. Where I've had to cut holes in the joists for the drain lines, I'm installing the reinforcing plywood on both sides.

Ideally, the plywood reinforcement should be applied before I run the pipe through the joists... and for the most part I've done that. There are a couple of instances where I couldn't, so I'll have to cut some slots out of the plywood and fit it around the pipe afterwards.

Once I had the holes cut out, I started threading the pipe through in sections approx 12" long. The sections are joined together with ABS cement and a coupling fitting.

The odd shaped fitting on the right-hand side of the photo below is where the plumbing vent line will attach to the drain line.

A coupling fitting on the end.

That's a cleanout fitting on the right... to allow for access to the pipe in the unlikely event (I hope) that the drain gets really plugged.