The Gap in Experience Can't Be Bridged | Careers in the Construction Industry
Hello, everyone. This is Enta. Something happened recently that was—well, not just amazing, but made me wonder, “Is that even a thing??” The design calls for a prestressed concrete (PC) bearing plate to be installed on top of sprayed mortar on a cut slope, with no leveling required. I could understand using a PC bearing plate directly on the natural ground, but on a layer of mortar…
Trying Out a Down-the-Hole Hammer | Drill Performance
Hello, everyone. This is Enta. I’ve uploaded a video to YouTube showing drilling with a down-the-hole hammer. This site is made of granite, so it’s incredibly hard. Depending on the machine’s capabilities, if you were to drill with a standard backhammer, you probably wouldn’t even be able to drill one hole a day. That…
That Thing for Removing Slime | Drilling Site
Hello, everyone. It’s Enta here. It’s summer! Finally!!! The long rainy season is over! From here on out, we’re in for about two months of scorching heat. Let’s be extra careful as we go about our work! Anyway, I’ve finished making that thing I mentioned the other day. You know, that thing for collecting slimes…
Backfill Material Is Required Behind Concrete Load-Bearing Slabs | Construction Principles
Hello, everyone. This is Enta. Lately, I’ve noticed that during ground anchor installations, there are often cases where backfill isn’t being placed even though a load-bearing plate is in place. How about at your job sites? The natural ground is really uneven. Yet, there aren’t any zabuton frames or anything like that. Just the other day, we made a design change…
That Thing for Removing Drilling Slurry | Construction Tools
Hello, everyone. This is Enta. I really don’t want to do this, but I guess I’ll have to lol. It’s the “slime removal” that’s always required when supervising ground anchor work. Even though I’ve explained to the general contractor that it’s pointless, the local government insists I do it. If I tell the local government it’s pointless…
This Year's Prolonged Rain Causes Slope Collapses | Torrential Rain Damage
Hello, everyone. This is Enta. Just when I was thinking, “Maybe the rain has let up a little?”—it’s raining again... The job site is really in bad shape... Drilling for anchors and such is going well, but it’s all about the shotcrete! At the site we started working on the other day, the earthwork was delayed over and over again before we finally got to start. There, the...
Project Management During the Rainy Season Is Challenging | Rain Countermeasures
Hello, everyone. This is Enta. The rain is causing major delays on our site. How are things going on your sites? This tends to happen with any project that involves earthwork, doesn’t it? When it comes to earthwork on slopes, you often have to resort to single-cut excavation, but if you dig carelessly on a rainy day, it could lead to a collapse…
Drilling in High-Pressure Water (Part 4) | Conclusion
Hello, everyone. It’s Enta here. We’re already halfway through the year! It feels like just the other day we were talking about the COVID-19 pandemic and staying home, but it’s already July 2nd… Time sure flies, doesn’t it? I’ll be popping up here and there again this month, so please look forward to it. lol Anyway, moving on—the other day, Kronenbit reported that…
Drilling in High-Pressure Water (Part 3) | Field Test
Hello, everyone. This is Enta. This is a continuation of my previous post. After drilling with a crown bit, cement slurry is injected. Basically, when drilling the outer hole, the slurry is expelled outside the outer casing. And when the water pressure is high, it’s surprisingly difficult to tell whether it’s slurry or water…