Plumbing rough in day 7

Alex and Anthony from AV Mechanical  continues the plumbing rough in work.

This is the supply line to the kitchen island. There’s also a small copper line which is the ice maker water line for the refrigerator.

The sump pump is installed and it will pump water in the sump pit up and then goes out of the house near the roof drain.

The smaller discharge to the left is the sump pump’s output.

Here’s the hose bib at the back of the house.

And hose bib on the 3rd floor.

To test the drain system, you first cap all the drain outlets, then install this clean seal plug at the main clean out. You then fill the entire drain system with water from the vent on the roof. If water level doesn’t drop over time, then you can be sure the drain system is not leaking.

To test the supply lines, it’s a bit complicated. First you need to cap all the stub outs for every supply line. Like this one in the laundry room.

This is also done to all the rest of the outlets like the shower or the house bib outlet shown below.

 

Then you will also connect all the hot and cold lines together like here where they are going to be routed to the main manifold.

Then an air pressure gauge is connected to one of the supply line and then an air compressor is connected. The air compressor is used to pressurize the system to around 80 psi. Then you wait for at least 15 minutes and make sure the pressure did not drop.

In my case, the plumber pressurized the system to 110 psi and observed no pressure drop.

They are calling for inspection tomorrow since the plumbing rough in is now completed.