Methods for Lifting a Drilling Rig onto a Slope (Part 3)
Hello, everyone. This is Enta. How to Hoist a Drilling Rig onto a Slope (Part 1) How to Hoist a Drilling Rig onto a Slope (Part 2) In my previous post, I wrote about how to transport machinery using a cableway (log hauler). This time, I’ll discuss how to transport heavy loads at sites that use such cableways…
A Note on Inner Bits
Hello, everyone. This is Enta. Today, I’m going to talk about bits, lol. “Inner bits” are the bits used for drilling holes in the double-walled tubes of rotary percussion instruments. Since the “outer” bit is on the outside and the “inner” bit is on the inside, there are various types of inner bits as well. Everyone…
The Purpose of a Zabuton Frame | Leveling and Transmitting Anchor Force to the Subgrade
Hello, everyone. It’s Enta here. It’s gradually getting colder, but then it gets hot again lol. Are you all taking good care of yourselves? Let’s get plenty of sleep and stay in good shape! But anyway… You know what this is, right? That’s right! It’s the zabuton frame. So, about this zabuton frame…
Ground Anchor Construction Has Entered the Era of Maintenance and Management | The Importance of Inspecting Existing Structures
Hello, everyone. This is Enta. The other day, I received the study materials for renewing my Ground Anchor Installer certification. Since there are no in-person training sessions right now due to COVID-19, I’ll be studying at home. I’m sure other industries and certifications have adopted similar systems as well. …
By understanding the price and service life of machinery, you can determine the appropriate cost of machinery.
Hi everyone, this is Enta. Do you have any idea how much it costs to operate a drilling machine? I’m talking about actual subcontractor equipment here, lol. Back when I worked at a branch office, I never really gave it much thought. Well, I’ve never bought one or maintained one myself. So, of course I wouldn’t know…
If the ground doesn't have sufficient bearing capacity, the load will be transferred elsewhere.
Hello, everyone. This is Enta. How did the typhoon treat you? There’s been damage in various areas, but since the ground is still unstable, let’s be extra careful as we work. But anyway, if the ground doesn’t have enough bearing capacity… You hear people talk about “ground bearing capacity” a lot on job sites, right? Like, “It’s sinking because the ground doesn’t have enough bearing capacity”…
When I cut out the box from the void in the sprayed-on frame, the inside was completely empty!
Hello, everyone. This is Enta. I’ve been working on a rebar insertion project for the past few days—do you know what “pre-drilling” is? It’s the process of drilling holes in advance to make it easier to drill during rebar insertion or ground anchor installation. It varies depending on the site, but as shown in the photo above…
Since the nominal diameter differs so much from the actual size, quite a few people are under the wrong impression.
Hello, everyone. This is Enta. I’m sure you’re familiar with the term “nominal diameter,” but it’s actually quite different from what design consultants tend to think it is. Nominal Diameter: You often see borehole diameters like 90, 115, or 135 listed in design documents and drawings, right? And for cement slurry…
If the cement slurry is too thick, do not add water to thin it out!
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…