I’m going to start this post off with a container construction tip. If you plan on having exposed metal walls or ceilings, by all means try to have them painted with a spray gun early on in the construction phase. I discovered too late that standard diameter paint rollers are too large to deposit paint in the concave portion of the corrugations. Instead, I had to use a mini roller which took much longer than I had planned. My arms and neck are still feeling the effects.
Although the bathroom is close to being functional, it will probably be a work in progress for a bit longer – hence the 1.0 designation. Aside from all the accessories I need to add, I’m still not sure about the shower. Because I had to raise the shower on a platform due to the interior discharge plumbing, the 20″ combined height of the tub and platform makes it difficult to get into. What I’d really like to find is a 30″ diameter tub that’s only 6″ high, with little to no slope on the sides. I’ll probably end up having to make one myself someday out of epoxy coated wood. In the meantime, it’s at least functional.
The platform is constructed of 2″x6″ cedar boards with stainless steel screws holding it together. The vertical support boards are cut out along the back wall to make room for the plumbing, which runs from under the kitchen cabinets to the shower platform. The tub is a Behrens 35 gallon galvanized steel tub that I got from Amazon, of all places. I cut a hole in the center, recessed the perimeter of it a bit with a punch and hammer, then epoxied a threaded drain into it. The HepvO waterless drain waste valve screws into the threaded drain and runs horizontally to the the main drain pipe. Without the HepvO valve, I don’t know how I would have been able keep the shower trap indoors. The other big advantage to these, as I mentioned in a previous post, is that they are self winterizing.
Here’s a look at the plumbing behind the scenes. I’ve got to say it took some time to figure out how to fit this under the kitchen cabinets and shower, allowing for the requisite 1/4″ per foot slope. The urinal is plumbed to the drain with flexible PEX tubing attached to quick connect/disconnect SharkBite fittings. An added bonus with this setup is that the tub and urinal can both be disconnected and removed in a matter of minutes without any tools. And before anyone asks why the plumbing can’t go behind the walls, there’s a structural steel post between the containers and directly behind the drywall that prevents it – such are the challenges of container construction.
It’s rather difficult to take pictures inside such a small place and be able to see everything, so I’ve included an overhead layout of the bathroom from SketchUp. This shows the main bathroom area and the “utility closet” for general storage and the electrical and water systems.