Hello, everyone.
This is Enta.
The other day, I got a call from a company called Denki Hosho Co., Ltd.
Denki Hosho Co., Ltd.: “We’re calling on behalf of Chubu Electric Power. May we verify the inspection number on your usage statement?”
Me: “What kind of work has Chubu Electric Power commissioned you to do?”
Denki Hosho Co., Ltd.: “Regarding the Increase in Electricity Rates...”
Me: “I have a contact at Chubu Electric Power. Would it be okay if I checked with them first and then called you back?”
Denki Hosho Co., Ltd.: “Tu-tu-tu”
I got cut lol
Lately, we’ve been receiving sales pitches for copiers and contact from fraudulent companies such as Denki Hoken Co., Ltd.
When I'm not busy, it's fun and I can put up with it, but when I'm busy, I seriously lose it lol
Please be careful, everyone.
But that's beside the point.
The Significance of Drilling for Slime Collection
You know how sometimes you end up with slime when you're doing anchor work, right!?
I don't usually take on first-tier subcontracting work, but I will if instructed to do so.
What does this tell us, anyway??
To be honest, I don't really know anything about it lol
If I had to say,I guess it's just a matter of color, huh?
1 m, 2 m, 3 m... up to 20 m, and
Even if I collect samples every meter, they’re already completely mixed together, and in fact, I can’t even tell which part the slime came from.
They're busily catching them with a net, aren't they?
For example, because I forgot to pick up the slime,No one can tell if the ore was mined by cutting into the mountain next to it.
I might be able to tell the colors, at least
Boring Log—Core Photographswhile watching
On site, comments like, “Oh, this looks just like the actual data,” or “The color and hardness are similar,”
It would be fine if that’s just how it’s used, but it’s more like the inspector asks, “Did you take the slime?” so I end up taking it,
It seems like things have gotten a bit confusing.
What’s more, even if you’ve obtained the documents, the government office won’t accept them when you submit them.
"Just take care of it over there..."
So what's that supposed to mean??
The Drilling Slime is not a target for inspection.
I’ve never once been asked during a final inspection if I made sure to remove all the slime.
Has anyone ever been told that??
Besides, it’s not even subject to inspection, is it?
It doesn't affect the score, either.
The inspector has never even asked me about slimes!
You cannot make design changes after collecting a slime.
You cannot make changes—such as increasing the design length simply because the color of the anchorage section differs—based on comparing the collected slime samples with the bar chart.
Generally speaking, there is no need to change the design of the anchor length itself, as long as the borehole diameter remains the same.
Since the friction on the circumference changes when the drilling diameter changes, the drilling length also changes.
The Position of the Japanese Geotechnical Society
Design and Construction Standards for Ground Anchors and Explanatory Notes, p. 91
It says this.
The color of the slurry during drilling and the drilling speed (which indicates the hardness of the rock) are used as references for assessing the suitability of the ground.
And, Appendix Table 3-1
Design and Construction Standards for Ground Anchors and Explanatory Notes, p. 140
Please see the note at the very bottom.
Even under the same geological and weathering conditions, the color tones often differ.
What this means is,
That just goes to show that you can't rely on a slime's color.
So it's just for reference, I guess lol
As a construction manager,
From an administrator's perspective, I think either option is fine.
If you want to collect it, go ahead; the same goes for the opposite.
If you can say with certainty, “I won’t take it!” then that’s fine.
There is no penalty for not collecting the sample.
So it's all on you, huh? lol
See you later.
