Thoughts on Rust at the Construction Site (Part 2)
Hello, everyone. This is Enta. Thinking About Rust on Construction Sites (Part 1) Picking up where I left off last time, I’ll be writing about what to do about this rust and what measures we should take. Measures for Reinforcing Bars Since there’s nothing we can do about the parts that have already rusted, I’ll be thinking about what to do with them…
Thoughts on Rust at the Construction Site (Part 1)
Hello, everyone. This is Enta. The final look of a job site pretty much determines whether the quality is good or bad. While we were talking about the appearance of a recent job site the other day, there was one more thing that caught my attention. Something even more concerning! This is it! Can you tell what this is? &n…
It’s almost as if the quality of the work depends entirely on how it turns out on site.
Hello, everyone. This is Enta. The other day, I saw some really beautiful work. It was the site manager’s attention to detail—this is the site after completion, and the rebar installation is spectacular! It’s all lined up perfectly, showcasing both the site manager’s high standards and the craftsmen’s exceptional skills! Everything about it is simply amazing! I was completely…
Guidelines for Diluting Cement Slurry with Hot Water Based on Finished Mix Temperature
Hello, everyone. This is Enta. I received an email regarding the discussion we had the other day about mixing mortar with hot water. The question was, “What about grout?” Based on my experience, I think using cement milk is a viable option—especially when working in extremely cold conditions. I ran a simulation using mixing water at 50°C. Simulation…
Why are the coordinates of anchor installation locations necessary during the design phase?
Hello, everyone. This is Enta. I heard that recently, a designer was asked to include the coordinates of anchor placement locations on drawings. Someone asked me, “Does this even make sense?” so I thought I’d write about it. Is it better to include coordinate values on slopes? It’s better to include coordinates…
People often question the necessity of placement tolerances during concrete placement, but there’s always only one answer!
Hello, everyone. This is Enta. I still get asked about alignment errors from time to time. The question you’re all probably wondering is: “Is there really a need to do this? Is there any point?” I really do get asked this a lot. The purpose of measuring alignment errors: Since these are errors in alignment, it’s about the initial installation…
Basic Tests for Measuring Circumferential Friction Resistance (τ) in Ground Anchor Construction (Part 5): Materials
Hello, everyone. This is Enta. I had intended to explain the basic test documentation first, but due to my schedule (I’m swamped with various things), I think I’ll start with the construction process instead lol. Basic Test (Part 1) for Measuring Circumferential Friction Resistance (τ) in Ground Anchor Construction. In ground anchor construction…
Regarding the “Tip Cap,” a Component Used by Rebar Insertion Workers
Here’s a story about a rebar insertion job we did the other day in Kagawa Prefecture. I assumed that several components—such as spacers and grout pipes—would be attached to the reinforcement bar to form a single unit, but at this site, the setup included a “tip cap,” which I myself haven’t used very often. ⬆ “Tip…”
Is that really the right material to use for the filling?!
Hello, everyone. This is Enta. Today, I’m going to talk about this lol. “Huh? What???” You’re probably thinking that, right? Yes. It’s about filling in the gaps. Basically, when it comes to rebar insertion or ground anchor work, grouting is done only up to the horizontal level. Anything beyond that…