Run and You'll Be Chased | A Slope Engineer's On-Site Philosophy
Hello, everyone. This is Enta. We suddenly had to take the basic exam, lol. The thing is, we’d already conducted a geological survey, so we were planning to use that data to install ground anchors. But then, due to land use restrictions, we were instructed not to install ground anchors on private property…
Watch Out for "Success-Like" Failures | Pitfalls in the Construction Industry
Hello, everyone. This is Enta. I’m often out on job sites because I’m so busy, and it really makes me think about a lot of things. The other day, I worked on a site where I absolutely couldn’t let any oil spill! I can’t go into detail about the circumstances, but it was my first time working on a site like that. However, the mud and…
Ground Anchor: Pack the Inside of the Undercap Tightly | Head Treatment
Hello, everyone. This is Enta. Are you adding the non-corrosive additive—the one you know from KTB ground anchors? Mix both ingredients together and give it a good shake. (The KTB specs say to mix it with a mixer for at least 3 minutes, lol.) It doesn’t really matter which one you add first. TRUSCO O…
Cost Estimation Data for Packers | Unit Price Information
Hello, everyone. This is Enta. In ground anchor construction, there’s a process called “packer installation,” right? It’s not very well known, but the cost associated with installing these packers is actually quite significant. And since this isn’t widely known, I decided to put together some cost estimation materials today, so I’m going to share them…
Remnants of Removable Temporary Ground Anchors | Non-Recoverable Portions
Hello, everyone. This is Enta. I get a lot of questions about removable temporary anchors, so I’d like to address them. “All removable anchors can be removed, right?” I get this question a lot, lol. When you look at a temporary anchor with a standard cross-section, it looks like this. The anchoring section features a load-bearing element like this…
Drilling Limits with Spring Drills | Machine Performance
Hello, everyone. This is Enta. Starting this week, I’ll be on-site too. Today, I’m basically the only one here, lol. That said, since we finished most of the preparations last week, I’ll just be doing light tasks like pulling hoses and swapping out tools. The actual heavy machinery move—a 130-metric-ton one—is scheduled for tomorrow…
Better Safe Than Sorry (Don't Forget What You've Prepared) | Ongoing Management
Hello, everyone. This is Enta. The other day, I borrowed a drilling machine from a company I know. However, since it didn’t come with a hydraulic hose, I decided to make one myself. But that’s when I ran into a major problem. The machine’s hydraulic quick-connect coupler was made by Bridgestone…
Drill Slime Is Useless | The Meaning of Gathering
Hello, everyone. This is Enta. You haven’t collected core samples from every single borehole, have you? They’re collected to verify whether the soil conditions at the site match the planned soil profile. But it’s even questionable whether those samples represent the same soil type. Well, it depends on the supervisor…
Collecting a Rare Burrowing Slime | Soil Analysis
Hello, everyone. This is Enta. I’ve been drilling at a certain job site since last month. It’s a temporary ground anchor project, and there’s a clay layer in Nagoya City called the Atsuta Formation. This clay layer is incredibly strong—it just won’t dissolve, lol. And as a result, we’re facing this situation…