Controlling Water on Slopes | Steps to Reduce Flow Velocity and Disperse Water: What Young Project Managers Should Know
Hello, everyone. It’s Enta here. Lately, I’ve been thinking nonstop about how to quickly lower my core body temperature. I figure it’ll help prevent heatstroke. A lot has happened, so I’ll write about that another time lol. But anyway, this time I want to talk about “water.” Working on slopes is, well…
No Oil Allowed at Water Treatment Plants!? A Story from a Site Where the Anti-Rust Oil Used to Treat Ground Anchor Heads Was Switched to a Biodegradable Alternative
Hello, everyone. This is Enta. When you’re working on ground anchors or inserting rebar, you put rust-preventive oil inside the caps, right? That’s actually a petroleum product (mineral oil). Well, I’m sure you already know that, lol. It is made from naturally derived raw materials, but if it leaks into the soil or water, it doesn’t really break down…
Is Participation in the Construction Workers’ Retirement Fund an “Obligation” for General Contractors? A Case That Left Me Feeling Uneasy Regarding an Application for a Foreign Retiree
Hello, everyone. This is Enta. You’re all familiar with the Construction Industry Retirement Allowance Mutual Aid System (Ken-tai-kyo), right? It’s the system that manages our retirement benefits through a mutual aid handbook so we can receive them when we leave the construction industry. Basically, you get a stamp from the general contractor and affix it to your handbook. And when you retire…
Let's Talk About Collapse Prevention Measures During Construction! (Part 2)
Hello, everyone. This is Enta. This is a continuation of my previous post. “Slope Collapse During Construction: Water Is Almost Always the Cause (Part 1)” In Part 1, I wrote about how the safety factor (Fs) does not reach 1.2 during construction, how water tends to concentrate on the weakest points, and how sheet protection is only a temporary measure…
Let's Talk About Slope Stabilization Measures During Construction! (Part 1)
Hello, everyone. This is Enta. A slope collapses during construction. Every slope contractor has had that moment of panic or disappointment at least once, right? This time, I thought I’d write about the causes and countermeasures for that lol. There are basically only three types of slope sites. Slope sites…
I Tried Measuring the Limits of Packer Pressurization! (Part 4)
Hello, everyone. This is Enta. This is a continuation of my previous post. I Tried Measuring the Limit of Packer Pressure! I Tried Measuring the Limit of Packer Pressure! (Part 2) I Tried Measuring the Limit of Packer Pressure! (Part 3) Injecting while watching the gauge. What’s happening with the packer? …
I Tried Measuring the Limits of Packer Pressurization! (Part 3)
Hello, everyone. This is Enta. I tried measuring the pressure limit of a packer! I tried measuring the pressure limit of a packer! (Part 2) Last time, I wrote that you absolutely must not apply more than 0.5 MPa to a packer. The hose will burst, and the packer’s mesh will stretch, causing…
Sandbags are the best way to easily level uneven ground!
Hello, everyone. This is Enta. I saw a question asking, “How do you level out unevenness under the pressure plate?” so I’ll answer that. Here it is lol. This is the easiest and cheapest method. You can use the cheapest sandbags available—they’ll work just fine. And for the soil you fill them with, use...
Let's take a closer look at the "Measures Against Extreme Heat in Construction Work" issued by the Ministry of Land, Infrastructure, Transport and Tourism
Hello, everyone. This is Enta. Here’s a new initiative announced by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) at the end of last year: “Support Package for Heatwave Countermeasures in Construction Projects” — Supporting the Implementation of Diverse Work Styles During Heatwaves — An overview of this has been released, so I’d like to take a quick look at it. Attachment…