On Hole Warping During Drilling in Rotary Percussion (Part 2)
Hello, everyone. This is Enta. Today, I’d like to talk about hole warping when drilling holes in rotary percussion instruments. I talked about hole warping the other day, and here I am talking about it again lol. The warping I mentioned the other day was vertical, but this time I’ll be discussing horizontal warping. It’s easy to understand how the weight causes the hole to warp vertically, right?…
On Hole Deformation During Drilling in Rotary Percussion Machinery
Hello, everyone. This is Enta. I wrote about drilling angles in dewatering borehole construction. What is the approach to angles in dewatering borehole construction? In that context, I received a question about casing deviation. I’d like to explore this based on the relevant materials…
What exactly is an on-site adjustment to the mix in spray-applied concrete work?
Hello, everyone. This is Enta. It’s November already!!! Only two months left in the year! Let’s give it our all at work ^^ But enough of that. In this post, I’d like to write a bit about adjusting the mix ratio for spray-applied coatings. You know how they adjust the mix ratio on-site at spray-coating jobs, right? &…
How to Pour Cement Slurry Quickly and Accurately on a Sloping Mountain!
Hello, everyone. This is Enta. When the cement slurry doesn’t rise during rebar insertion, what do you do? I don’t think many of you just keep pouring the cement slurry without doing anything. After all, you want to get it up as quickly as possible! lol So, what do you do…?
What is the concept of angle in dewatering drilling?
Hello, everyone. This is Enta. I heard that the drainage borehole project I drilled and supervised last month has been completed lol. The final result looks really great—it’s beautiful, isn’t it! Each borehole is just under 30 meters long, and the drilling angle is 7 degrees. I always think to myself, when it comes to angled drilling…
Advantages of PC Spacers for Lath in Spray-Applied Applications
Hello, everyone. This is Enta. Have you heard of PC spacers? These are spacers sold by Koiwa Wire Mesh, and since I figured you might not know what makes them so great, I’m sharing this little tip with you lol. The best thing about them is their size. These PC spacers are…
If the cement slurry turns out too stiff when you're making it, don't add just water!
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…
In the field of private slope and stone wall construction, these three methods account for the vast majority of projects (for the general public).
Hello, everyone. This is Enta. Lately, I’ve been getting called out quite often for private construction projects—such as reinforcing stone walls or stabilizing slopes on private properties—and it’s become very common for clients to request construction work after I’ve conducted a survey. While I often rely on empirical methods for the design, the strength requirements aren’t as high as for public projects, so collapses…
We've discovered a ground anchor method that can reduce carbon dioxide emissions! (Innovation)
Hello, everyone. This is Enta. Have you seen this before? It’s a load-bearing element. A temporary wooden anchor load-bearing element. It’s amazing, isn’t it! I thought, “It’ll rot away after installation!?” but since it’s actually covered in cement slurry, that won’t happen, lol …