Protecting Pressure Gauges | Protect Your Pressure Gauges with Gauge Protectors
Hello, everyone. This is Enta. It’s a beautiful, sunny day, isn’t it? I suddenly got a craving for Burger King for the first time in a while, so I went all the way to Osu in Nagoya. I get a craving for Burger King every now and then!! But anyway… I imagine you often perform pressure injection at Grand Anchor Construction, and when you do…
Examples of Failed Zabuton Frames | Warping, Camber, and Insufficient Thickness
Hello, everyone. This is Enta. Lately, I’ve been seeing a lot of failed zabuton projects. So, I’d like to explain what constitutes a failure. These are listed in no particular order. It’s warped. It’s twisted. One of the edges is raised. The center is low. It’s curved like a kamaboko. Or is it the other way around…
Getting Creative with Greenery Spacers and PC Spacers | Ensuring You Score Points
Hello, everyone. This is Enta. Lately, we’ve been seeing more and more greening spacers and clip spacers being used. That means construction has started nationwide. It feels like we’ve pretty much exhausted all the creative ideas for greening and rock bolts, so just this alone should earn us some points…
The Difference Between Perception and Awareness | Behavioral Psychology for Improving Safety Margins
Hello, everyone. This is Enta. It looks like it’s going to rain here in the Tokai region. A little rain is nice, isn’t it? But once this rain stops… it’ll get hotter by the day… But enough of that. Recognition. Have you ever thought about what happens when you recognize something? Humans recognize…
Loose Nuts (Part 2) | Why Lock Bolts Still Work Even When They Loosen
Hello, everyone. This is Enta. This is a follow-up to my recent post about nuts coming loose. What happens when they come loose? Actually, in the case of rock bolts, even if they loosen slightly, it doesn’t really have much of an effect. While vibrations and impacts can cause the nuts to loosen, they almost never come off completely, so the nuts…
Corrosion Protection Structures for Ground Anchors I, II, and III | Do Temporary Structures Require Backfilling?
Hello, everyone. This is Enta. I noticed something while grouting the opening of a temporary anchor. With this temporary anchor, the grout had settled about 1 meter after injection. Well, that’s a common occurrence, so it’s not a problem. But here’s the thing. I was told to fill this in…
Reasons Why Rock Bolt Nuts Loosen | Measures to Prevent Loosening Due to Vibration and Friction
Hello, everyone. This is Enta. Tightening Force: How much force do you use to tighten the nuts on rock bolts? Generally speaking, the basic rule is to tighten them just enough so they don’t come loose. Perhaps you aren’t tightening them to the tensile load (Td) specified in the design phase…
Guidelines for Single-Pipe Scaffolding Spacing | Spacing Between Scaffold Structures by Drill Weight
Hello, everyone. This is Enta. When erecting scaffolding for ground anchor installation or rebar insertion work, how do you give instructions to the scaffolding crew? For a drill of this size, what should the scaffolding spacing be? If you erect the scaffolding with precise spacing based on structural calculations, it requires a lot of time and materials…
Measuring the Finished Shape of Overlapping Laths | Which Two Points to Choose
Hello, everyone. It’s Enta here. My senior from Kyushu went back home the other day, so I can finally breathe a sigh of relief, lol. I’d be happy if you guys had a good time, lol—even though we were just drinking the whole time. But anyway… A while back, I wrote about rebar setters, but I didn’t mention anything about managing the number of anchors installed…