A meeting to discuss the construction of a water supply system in the principality's area was started on the bridge of the .
"The problem is the water source, the water treatment plant, and the water pipes...?"
Jin began by stating his premise.
"We also need pumps to supply water," he said.
Elsa added.
"Or rather, how to construct it, I suppose.
Reinhard also raised a practical issue.
"I think we need a reasonable plan.
Jin then proposed a classification of the problems.
"Let's separate technical problems from other problems," he said.
"That would make it easier to understand."
"Yes, I agree."
Then Hitoshi said,
"I think water pipes, pumps, and water purification facilities are technical problems.
Then Jin said,
"The water purification plant and the construction work are more personnel-oriented?"
Hannah took over.
"Well, then, in my opinion, the water pipes will be a problem.
Saki expressed her opinion. Jin agreed with her.
"That's it. In my world, they used iron and lead pipes in the past. After that, it seems to have been replaced by plastic called PVC pipe.
"Well, there's also the question of what to do with the thickness ...... and the inside diameter."
Reinhardt said that might change the difficulty of the construction.
"I guess so. ......"
Jin thought about it. If it were Horai Island, he would use ground spider resin (GSP) without any hesitation.
It is strong with little degradation over time. It is also flexible and is not easily broken.
"But it's not commonly used. ......"
Even pipes made of maggi-polyethylene would be cost-prohibitive, Jin thought.
"...... metals are also ...... cost-prohibitive."
Bronze and light silver would be impossible.
"How about using wood and hollowing out the inside?"
"Well, that would be safe. "Well, that would be a good idea, but I'm not sure about the thickness.
Jin almost agreed with Reinhardt's opinion, but then he realized there was a problem.
"Considering the future, we want the diameter of the water pipe to be about one meter, don't we?
"Jin is also reckless. ......"
Marcia was taken aback.
"Then, why don't we just leave it open for additional work later?"
Marcia said, "Whether we replace them with thicker ones or lay one or two more in parallel, we should think about making it easier to install them later.
"Yes, ....... There will be a need for maintenance."
If the water pipes were damaged by some accident, they would need to be repaired quickly, and it would be necessary to take that into account as well.
"Ah, construction work on a large scale is troublesome. ......"
"Brother Jin, I mean it."
Erza interrupts Jin, who complains unintentionally.
"It was the same with the circuit and the airfield, but before I knew it, I was so far removed from the general sense of ...... now, wasn't I?"
"That's why you can do what no one else can do. That's a wonderful thing."
Erza praised Jin for what he had just done.
"There are many people who can do ordinary things. There are many people who can do ordinary things, but there are few who are not ordinary. Among them, Jin is the most unusual."
"Oh, oh."
Jin was reassured by Erza's slightly clumsy follow-up.
"Do what you can, a little at a time.
"Yeah."
"Uh, so..."
Reinhardt started to speak again.
"When you and I and Matthäus went through the Trockenbahn a long time ago on our way to the Shoro Empire, didn't we see a plant that looked like bamboo?"
"Yes, there was."
The leaves do not resemble bamboo but look like palms, and the bark is swollen, not knotted, although there is a knot-like structure.
Jin wondered if it could be used for pipes, but it swelled when it contained water, shrank when it dried, and was not stable in dimension, ......, he recalled.
"I didn't have a particular name for it, so I discussed it with Jin and decided to call it <>."
"...... Yeah."
Jin listened to Reinhardt's explanation, "I certainly have a good sense of naming things.
"I think it would be best to use it after processing it to stabilize its dimensions.
"Indeed.
< has no apparent use. They also grow very fast.
If we could use them for industry, I think the nearby towns would be more prosperous.
"I see, that's what I'm talking about, Reinhardt."
Jin remembered the names of places like Hatta, Amberg, and Lindau ...... with nostalgia.
"Actually, the <> Jin was considering the possibility of industrializing the area and stabilizing its dimensions," he said.
"I see, that's a good idea."
"I put some dry oil in it so it wouldn't absorb water."
"I see."
is an oil that hardens when exposed to air.
It is not a oil, but it is called oil for the sake of convenience.
Examples are linseed oil, safflower oil, walnut oil, and sunflower oil.
In contrast, oils that do not solidify are called non-drying oils, such as rapeseed oil, camellia oil, and olive oil.
"We had them grow sunflowers in that area and soaked them in the oil.
"I see."
"The ones about 2 cm in diameter are used for domestic plumbing, the ones about 5 cm are used for rain gutters, and the ones about 10 cm are used for domestic drains.
"Right."
"The lengths are standardized, 1 meter, 1.5 meter, and 2 meter."
"Mm-hmm."
The connections are made with special bronze joints.
"That's very thoughtful," said Jin.
Jin did most of the work.
I see.
Reinhardt's explanation made sense to Jin.
"It's a good industry for the area. I was thinking of ...... and multiplying it by and ."