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…
Unless it's an exceptional case, you don't need a coupler when inserting rebar!
Hello, everyone. This is Enta. Lately, I’ve been drilling holes for rebar insertion at a construction site. Unusually for this site, the general contractor is supplying the materials. The total drilling length is 3.5 meters, but we’re connecting a 2.0-meter section and a 1.5-meter section using couplers. Since that’s how the design calls for it, I guess that’s just how it is…
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…
I posted a video on YouTube showing how to operate the rotary percussion machine! And it turned out to be a manufacturing defect!
Hello, everyone. This is Enta. Today’s video is about how to use Rotary Percussion! That said, this video is actually 1 hour and 15 minutes long, lol. I just uploaded the footage from my recent Facebook Live stream directly to YouTube. Subtitles…
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…
On extremely narrow sites, rebar insertion work can be done this way, depending on the soil conditions and drilling depth!
Hello, everyone. This is Enta. I’m back on site starting today! It’s still experimental, but I’m planning to post videos showing how to operate the rotary percussion machine here on site. For now, I’m thinking of livestreaming it on Enta’s Facebook page. But I messed up last time…
Here's what the ultra-lightweight drilling rig looks like right now—next up is a test drill!
Hello, everyone. This is Enta. Anyway, here’s how the ultra-lightweight drilling machine I’ve been working on since spring turned out. *Sorry, but for various reasons I can’t show you the details lol. Please just get a feel for it. Since this is a portable drilling machine, I can take it anywhere…
Tackling Hard Rock Drilling with a Down-the-Hole Hammer | Steps to Increase the Number of Bits
Hello, everyone. This is Enta. Are you able to adapt your construction work to the conditions on-site? Well, since our job (as slope engineers) involves working according to the current state of the mountain, we’re relatively flexible in adapting to various situations—but how well can you handle different scenarios? The condition of the natural ground looks something like this…
Choosing the Right Type of Cement | A Firsthand Account of a Major Subcontractor Forcing Through Its Unit Prices
Hello, everyone. This is Enta. The other day, I was talking with the president of a company. His company mainly works as a subcontractor for a major corporation. His concern was that the major corporation was being extremely pushy about unit prices. First of all, he said his quotes never get approved. And then, the unit prices are set at a fixed rate…