8/12/19:
(Above: The plumbed in vanity sink. It almost looks professional.)
Preface: Really roughin’ it tonight. It’s late, and brain needs rest. Only one-time revision.
Building Summary: I started off today at Jacobhouse by finding a small puddle near the front door. This was ensued by a quick check to ensure that water was not coming from the container’s north side (where the plumbing is). It was not, so I was not entirely concerned.
I went on to begin plumbing in the sink – an exercise that led to my realizing I did not have the right parts to connect the drain to my 1-½” PVC sewer pipe. A reluctant visit to Sparr Farm Supply ensued, but I quickly found what I needed and returned to Jacobhouse. There, I measured / cut / glued together the drain and followed this up with tightening the faucet nuts (to hold the fixture in place) and fastening in the water supply lines.
After that, I went about searching for the source of the mysterious puddle at the front of Jacobhouse. This was a rigorous process of unfastening a couple planks of plywood and searching beneath them to see just how far the water ran. Padre came in around that point and suggested that it may have came from the opposite end where rainwater from last night’s storm was possibly sucked indoors due to Jacobhouse’s negative air pressure. So, I checked beneath the final plank of plywood at the east side, and there I found that even though it was not wet to the touch, the dust that was inside of the second rail appeared almost non-existent*. Thus, it was found that Padre’s theory was correct.
We decided to crack the window when we left Jacobhouse; that way the rain that was due later in the day would not be sucked in the postern portion of the container home. On my way out, I heard a squealing and realized just how much of a vacuum was being generated inside the container home. I then realized I had heard a similar sound the day before when passing behind the hind side of Jacobhouse. I asked Padre to close the window so I could see if I could hear the sound once more, and indeed, when I rounded the back side of the container home, there was a high-pitched whine; it was coming from the tiniest of holes in the silicone caulking. With that discovery, I was satisfied that the container’s primary hull was not leaking, and I simultaneously knew that I would have to find a way to solve the negative air-pressure problem.
(6:32 PM Update): Debated possible ways of solving the air-pressure problem after farmtime this afternoon. Decided that I would make an inlet vent using the combination of a PVC Surevent (the type of vent I’m presently using to relieve negative air pressure in the sewer line) and some breathable foam to capture excess condensation. I will need to make another hole in the container floor, but the vent will be small enough that I can simply place it under the soon-to-be framed storage step.
(9:16 PM Update): Padre and I stopped by Jacobhouse on our way home from the beefer check this evening to take refuge from a very windy thunderstorm. There, we measured the future counter space (70″ x 28″ x 3″) and planned the frame for it.
The PVC pack I obtained from Sparr Farm Supply – it had everything I needed to connect the vanity drain to the 1-1/2″ PVC sewer pipe. 
Vanity sink with faucet on. I had to reduce the brightness of this picture just so I could see the stream. The sink itself is so white, it is difficult to get a proper image of the bowl. 
Me, reading the instruction manual for once. I just wanted to turn on the hot water heater, but Padre convinced me to check the manual first. I obliged, for I did not want to damage the machine.
(New Section) Something interesting learned today SILT**: My return to college draws nigh, and without a doubt, I will be learning something new each day***. Thus, to get into the spirit of things and to perhaps alleviate my urge to include a lengthy commentary, I’m going to use this section to include one or two of the most interesting things I’ve learned in a day. Here’s today’s example:
- Today I learned that if one is unfastening sheets of plywood from a well-used floor, it is good to have a can of pressurized air available. Use the air to blow all debris out of the screwheads to ensure that screwdriver head bites.
Commentary: Three highlights today. The first is the fact of Jacobhouse’s being so airtight that it has become a nuisance. Not only did the resultant negative pressure allow for the influx of rainwater, it was making my ears pop (and Padre’s as well). I thought that the dual hose portable air conditioners was supposed to eliminate this problem, but it turns out that it only reduces the effect. I can only image what it would be like with the other A/C in place…****
The second highlight would be mine and Padre’s taking refuge in Jacobhouse from the thunderstorm this evening. The wind was howling, the rain was pelting with massive drops, and lightning and thunder were crackling and roaring all around, but Jacobhouse was unaffected. Sure, the sailshade outside bucked and warped, but even it remained in place throughout that tempestuous display.
Oh, and one additional highlight. Today, with the sink fully hooked up, we were able to test the instant hot water heater for the first time. At first I thought it was not working because the water only got slightly warmer, but Padre soon discovered that it was because it was set to 80 degrees F. When he set the device to 120 degrees, it proceeded to heat up… instantly. I was surprised at how well it worked and more than a little bit impressed.
Final Note: Tomorrow I plan on beginning the framing process for the countertop and the front step of Jacobhouse.
*Apparently the dust had been carried away by the small stream of water.
**A fitting acronym, seeing as knowledge is the fertile loam from which wisdom sprouts. Yes, it’s getting late, so I’m just writing anything that pops into my head.
***Especially seeing as I already learn something new every day.
**** Perhaps, if I include the new vent as mentioned in the 6:32 PM update, I could actually use such a unit. I would have the surevent allowing air in beneath the front step, and I would add a second surevent to the current Dual-hose A/c’s intake pipe. I will not do this while I still have a Dual Hose A/C, but it could make for a cheap replacement when the current unit inevitably breaks down several years from now.