The next step was a combination of building up the bathroom walls and running some of the plumbing. First, we used the wood from the insulation braces to build the bathroom wall. The right side of the wall is where I plan to put a plumbing manifold so I built this with 2x6s for the extra depth. The other side is a standard 2x4 construction. The wall that divides the shower enclosure and toilet is also a 2x4 construction.
Next, I started on the plumbing. I decided to use flexible PEX tubing and Sharkbite fittings for my plumbing manifold. The initial plumbing design is shown below. I bring the main water into the container within the wall. It then goes through a whole house water filtration unit, then splits for cold water. The line continues through a scale inhibiting filter before going into the tankless hot water heater and splitting for hot. I have four water needs in the container home; 1) kitchen sink; 2) bathroom sink; 3) shower; and 4) washing machine. The sketch shown below shows exactly how they would be laid out within the wall.
Next, I ran the PEX plumbing through the bathroom wall and split for the sinks on the other side of the container. I brought the water into the container in 3/4" PEX tubing. After passing through the water filter, the PEX remained 3/4" going into the cold water manifold. After the scale inhibitor, it was reduced to 1/2" as it entered the Rheem RTE13 Tankless Hot Water Heater and adapts back to 3/4" for the hot water manifold. All of the lines coming from the hot and cold manifolds are 1/2" PEX. I used a series of Push-to-Connect Sharkbite fittings within the plumbing manifold (wall) but used crimp PEX fittings everywhere else to save money! I have yet to turn on my hot water heater but I'll probably post more about product selection and review it once I've used it for a little while.
Another side note, The layout of the plumbing manifold was thought out carefully. Later, I plan to make an access panel in the wall that allows me to change the water and scale inhibitor filters and adjust the temperature on the water heater.
My name is Ashley. I want to minimize my footprint and live a more sustainable lifestyle. I'm an engineer with a love for simplistic industrial design and fabrication.