Ground Anchor Construction
2023/10/14

Workflow for Construction and Construction Management in Ground Anchor Projects

Hello, everyone. This is Enta. What do you think is the most challenging part of ground anchor installation? From a craftsman’s perspective, the question is, “How should we go about installing them?” Right? However, the installation process itself is relatively simple. If you follow the steps and include the necessary management checks…

Experience and Ingenuity
2023/10/13

The inner rod broke during ground anchor installation!

Hello, everyone. This is Enta. The other day, an inner rod broke at the site where I’m teaching lol. The photo above shows me in the middle of making a jig to retrieve the inner rod still inside the casing by machining the opposite end of the broken rod. This is the first time a rod has broken since I started teaching…

Failure Is the Mother of Success—Shigeo Nagashima
2023/10/10

Here’s the one thing you must never do when using packers in ground anchor construction at locations with high groundwater pressure!

Hello, everyone. This is Enta. Do you know what this is? That’s right! It’s the remains of an anchor used in ground anchoring work, lol. It’s the result of a failed attempt, hahaha. We had two failed attempts at this site before. What I learned from this experience is that grouting…

Retaining Wall Construction + Ground Anchor Construction
2023/09/28

Drilling through clay and silt is harder than I expected.

Hello, everyone. This is Enta. We’ve been doing dewatering drilling work for the past few days. I’ve been busy lately, so I’ve been heading out to the job site as an operator, but unlike in August, the temperatures have cooled down quite a bit, so it’s much easier on the body. This is the best time of year. Let’s stay safe out there! But enough of that…

Found Something Great
2023/09/26

I found a great product! (When used by an anchor operator, it allows for safe attachment and removal of the rod!)

Hello, everyone. This is Enta. Are you using this? This is a double wrench for rotary percussion tools. Regular double wrenches can be dangerous because they tend to fall off, but this one can be secured to the Exte side, so it absolutely won’t fall off. That’s why…

Tips for Improving Drilling Accuracy in Entertainment
2023/09/22

If the machine is too low to place the concrete in the designated position, raise it!

Hello, everyone. This is Enta. We’ve been carrying out drainage boring work in Shizuoka as part of landslide prevention measures for the past few days. You know how it is—even when the construction location is set, sometimes the machine is positioned too low to align with the drilling spot. In practice, we set it a bit lower and use scaffolding…

Beyond the Labor Shortage
2023/09/20

As labor shortages intensify, we’re seeing more and more worksites where rates are high but staff is scarce!

Hello, everyone. This is Enta. We’ve recently started taking on small scaffolding projects as well. Actually, there’s a reason for this—it’s simply because there aren’t any scaffolding contractors available, lol. For large projects, there’s usually enough money to secure one, but for small projects, the budget is tight…

Grout Plant
2023/09/09

Is a thicker cement slurry more effective?

Hello, everyone. This is Enta. You know how you take test specimens (cement slurry) at job sites, right? Like for ground anchor work, rebar insertion, or piles. There are all kinds of projects, but when you’re making these test specimens, if they’re extremely soft, you just throw them away, right? lol But on the other hand, if they’re on the hard side…

Tips for Improving Drilling Accuracy in Entertainment
2023/09/08

I still think digging with water is the fastest way to dig a hole!

Hello, everyone. This is Enta. These days, drilling is more about using water and air than just water, isn’t it? Water-only drilling used to be the norm. (Water and air is a more recent drilling method.) To clean the inside of the casing, we used to pour water liberally and move the inner rod up and down to flush it out…