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Hello, everyone. This is Enta. I wrote a series on construction errors involving ground anchors on this blog back in 2018, and I rewrote it again in 2023, but to be honest, both versions ended up feeling a bit half-baked, lol. This time, when I reread my old posts, I thought, “Wait, this…”

Hello, everyone. This is Enta. Someone asked me, “Why are you drilling 3.1 meters when the design calls for 3 meters?” That’s a good question. I used to wonder the same thing myself, lol. But anyway, today I’d like to talk about “over-drilling” during the drilling process. When drilling for rebar installation (rock bolt installation) or anchor installation…

Hello, everyone. This is Enta. It’s been really hot every day, huh? lol The job site has been like a steam room since this morning, and it feels like my stamina’s going to wear out first. Let’s make sure to stay hydrated and get enough salt! ^^ But anyway, this time I’d like to talk about “the rust-preventive oil used in the heads of rebar insertion tools—is it really…”

Hello, everyone. This is Enta. When managing stress in ground anchors, we look at the load and the amount of elongation, right? It’s not enough to just look at the load cell and say, “Okay, that’s good.” We also check how much the prestressed steel strands have elongated and whether there are any unusual deviations from the design elongation. Basically, this is important, isn’t it? Qualification tests and…

Hello, everyone. This is Enta. After installing ground anchors, it’s quite common to find that the grout has settled when you check the opening. As usual at this job site, the top of the grout was about 1 meter below the opening. There was probably some grout that had shifted downward as well…

Hello, everyone. This is Enta. It’s that muggy, hot time of year… It’s still bearable with my air-conditioned work clothes, but it’s only a matter of time before they stop being so effective!? This summer is probably going to be insanely hot again, but at the Ministry of Land, Infrastructure, Transport and Tourism, summer vacation is… I guess prefectures, cities, and towns will keep working as usual, regardless…

Hello, everyone. This is Enta. The other day, after I wrote an article about set loss, I got a question asking, “So, what exactly is relaxation?” lol. That’s a good question, lol. If I told you, “It’s in the Design and Construction Guidelines for Ground Anchor Works!” you’d probably be like, “Whaaaat?!” lol. At our company…

Hello, everyone. This is Enta. I wrote an article a while back titled “For Those of You Who Can’t Sleep Because Your Anchor Came Loose” (what a terrible title, lol), and even now I still occasionally get messages asking, “It came loose… what should I do…?” lol I know exactly how you feel. It’s happened to me countless times too…

Hello, everyone. This is Enta. Do you guys attend Anchor’s technical workshops? I try to make it a point to attend these study sessions whenever possible (well, almost always, lol). The reason is simple: working underground, where you can’t see what’s going on, remains full of mysteries no matter how many years you’ve been doing it—and that’s what makes it so interesting. And then there are new techniques…