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Video: Drilling Holes Directly into a Zabuton Frame | Demonstration
Hello, everyone. This is Enta. As I mentioned the other day, I went ahead and filmed a video demonstrating how to cut the opening for the zabuton frame. You don’t need to cut out a box-shaped section for the zabuton frame! Since there’s no rebar running through the center, it cuts cleanly. Seeing this really makes me think, “Yeah, you really don’t need to cut out a box-shaped section after all…”
Ground Anchor Construction: What Should You Do in Situations Like This? (Part 1) Answer
Hello, everyone. This is Enta. It’s been getting colder in Azumino lately. The long autumn nights have begun! I recommend switching to work clothes with reflective strips and the like. People aren’t as visible as you might think. But enough of that. Ground Anchor Installation: What Do You Do in Situations Like This? (Part 1)…
Ground Anchor Construction: What Should You Do in These Situations? (Part 1) | Case Studies
Hello, everyone. This is Enta. Okay, here’s a question. What do you think after watching the video? lol As you probably already know, this shows the borehole flushing process. A pump is feeding in a considerable amount of water. However, the amount of water coming back is actually quite low. It’s also seeping out from between the casing and the borehole wall…
On-Site Risks During the Basic Test | Preliminary Verification
Hello, everyone. This is Enta. I conducted a basic test the other day, and the specimen pulled out at around 100 kN. Well, since that test was strictly for determining τ (circumferential friction resistance), that’s fine, but when it pulls out earlier than expected, various problems start to arise…
"Do Not Add Water" | On-Site Warning
Hello, everyone. This is Enta. When you’ve mixed a few batches of grout, the grout left in the mixer tends to get pretty hard, right? What do you do in that case? This video shows what happens when you add something to that hardened grout! At first, it’s all clumpy…
Is a Cutout in the Zabuton Frame Necessary? | Construction Decision
Hello, everyone. This is Enta. Do you notice anything when you look at this? lol Well, it’s just a standard zabuton frame, the kind you see everywhere. Below are some of our past projects. Like this one. Or this one. Something’s different from the photo above, isn’t it? Did you notice? That’s…
I Tried Drilling a 15-Meter Hole with a Spring Drill 40 II (φ115) | Machine Verification
Hello, everyone. This is Enta. Starting this week, we’ve been drilling holes for ground anchors in Yamanashi Prefecture. Since all the drilling machines we normally use for anchors are currently out on other jobs, this is our first time using a spring drill. The maximum drilling depth is about 15 meters, and the bore diameter is φ115. I’m really nervous…
The Purpose of Zabuton Frames | The Need for Leveling
Hello, everyone. This is Enta. Exactly one year ago today, the Heisei 30 Hokkaido Eastern Iburi Earthquake struck. I was in Shimukappu, Hokkaido at the time, so I remember it very well! My deepest condolences go out to those affected by the disaster. Since then, a whirlwind of events has led us to where we are today. …
Simple Tension Management | Improving Anchor Installation Efficiency
Hello, everyone. This is Enta. Do you know how to collect basic data for stress management? There are times when the final data from aptitude tests or verification tests seems off, right? Like when the results fall outside the upper and lower limits. Back in the day, I used to run cycle tests over and over again without giving it a second thought, but…



