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…
Reducing Test Costs for Compressive Strength Tests | Cost Reduction
Hello, everyone. This is Enta. How many reinforcing bars do you produce per day for rebar insertion and ground anchor work? For formwork construction, the specifications clearly state that both one-week and four-week strengths must be verified. Therefore, we take one test specimen per day and perform six core drillings (θ7 and θ28…
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…
Now Is the Time to Earn Bonus Points for Creativity on the Anchor Scale | Bonus Point Strategy
Hello, everyone. This is Enta. I’ve been really happy to see the general contractor at our site using the Anchor Scale lately! The Bolt Scale is already quite well known. However, the Anchor Scale isn’t very well known just yet…
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…
Drilling Limits with Spring Drills (Part 2) | Continued Analysis
Hello, everyone. This is Enta. Regarding the spring drill boring I posted about the other day—it actually went well in the end, lol. It was a 17-meter borehole in sandy soil. The borehole diameter was φ115. It went surprisingly smoothly. (There’s a trick to it, lol.) Well, since the drilling angle was a vertical 90 degrees this time, I thought…
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…