The Cement Slurry Won't Stop (Part 1) | What Is a Packer?
Hello, everyone. It’s Enta. I’ve been swamped with work ever since Golden Week ended. Finally! I’m so happy! All the machinery in the warehouse is going to be removed. Once that happens, I’ll feel a little relieved… The fear of having no work, lol. That’s the tricky part about public works projects, isn’t it?…
The Proper Use of Cement | Along with the Issue of Major Companies Forcing Through Their 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…
Does the Drilling Depth Vary with Leveling Mortar? | Actual Measurement of 500 mm for Formwork 300
Hello, everyone. This is Enta. Does the drilling length for rock bolts vary? The drilling length for rock bolts is 3.0 m. For example, for a 300□ retaining frame, the length of the tie rod would be: protrusion + retaining frame thickness + drilling length = 0.1 m + 0.3 m + 3.0 m = 3.4 m. What about this?  …
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…
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…
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…
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…
One Year Since the Launch of Bolt Scale Sales | Hundreds of Units Shipped Nationwide
Hello, everyone. This is Enta. The yellow sand is really bad, isn't it? If the yellow sand is irritating your throat, please be careful. It seems that harmful substances are attached to the yellow sand itself, and when they settle in your airways, they can trigger an allergic reaction. Just gargling when you get home can help a lot…
Head Treatment for Rebar Insertion (Part 2) | With or Without Caulking
Hello, everyone. This is Enta. Golden Week is over, isn’t it? I spent half my time working, half lounging around at home, half playing video games, and half watching movies. But anyway… Speaking of finishing the heads of Rockbolts, do you use caulk? People seem to be split between those who do and those who don’t…