Ideally, rebar insertion should be done with a single piece whenever possible | Quality
Hello, everyone. This is Enta. I often get asked as a rebar inserter, “How long should the rebar be?” When drilling into double-walled pipes, the machine’s hammer can sometimes get in the way and make insertion difficult, but it usually goes in just fine. If it’s around 5 meters—the maximum length for a rebar inserter—it’s no problem at all. Even 7 meters…
Lowering Workability Improves Productivity | A Paradox
Hello, everyone. This is Enta. Have you ever thought about the balance between workability and quality in quality control? Let’s take cement slurry, which is commonly used. In a flow test, it typically takes 10 to 18 seconds, with a maximum of 22 seconds (for railways), right? How long does it usually take you to apply it? Well, one…
Civil Engineering Construction Management Standards: March Reiwa 3 Addendum | Knowledge
Hello, everyone. This is Enta. Did you all know this? I actually went to a job site the other day and was told that rebar insertion work has been added to the Ministry of Land, Infrastructure, Transport and Tourism’s Civil Engineering Construction Management Standards—specifically, the quality control standards and specification values from March Reiwa 3. Last year, in March Reiwa 2, “medium-layer mixed treatment” was the most…
A Slightly Unconventional Stone Masonry Reinforcement Project | For Private Sector Projects
Hello, everyone. This is Enta. This time, I reinforced a stone wall like the one shown below. I was asked to take a look at a stone wall like this—there’s actually a house built on top of it. However, reinforcing a stone wall like this is quite difficult. The stones themselves are embedded in mortar, and the joints…
A Smart and Simple Way of Thinking | Do I Need It? Or Not?
Hello, everyone. It’s Enta here. I’ve been running this survey for rebar installers for quite a while now, and the number of respondents has been steadily growing, little by little (lol). I’ll just keep hoping that even one more person who’s interested will join in. That said, most of you probably don’t think it’s all that strange…
Interim Results of the Rebar Installer Survey and My Thoughts
Hello, everyone. This is Enta. Here are the results of the survey I conducted the other day regarding rebar insertion work. I’ll leave this up for a while longer, but please take a look at the preliminary results. For now, these are the results. In a way, this is kind of like a business…
Cement slurry is carefully controlled using flow meters | Quality Control
Hello, everyone. This is Enta. When performing rebar insertion or ground anchor work, you inject grout, right? I imagine you sometimes use a flow meter to monitor that process. Companies like NEXCO use them quite a bit, don’t they? So, what exactly is a flow meter? As the name suggests, it measures flow rate. …
Survey for Reinforcing Bar Installers (Required for Contractors) | Industry Survey
Hello, everyone. This is Enta. I’ve created the survey I mentioned in my previous post. I’d love to hear your thoughts, so please be sure to participate. The survey is completely anonymous, so no one will know who answered (not even me). …
Aluminum caps and rust-preventive oil are not necessary for rebar insertion work!
Hello, everyone. This is Enta. Take a look at this photo. I found this the other day near a construction site in Yamanashi, lol. The back part has an aluminum cap, and the front part is wrapped in concrete. There’s a traffic cone set up in front of the top, lol. I guess a car must have hit this part and knocked the aluminum cap off…