Why Do Slopes Under Construction Collapse?
2026/04/27

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…

Packer Pressurization
2026/03/19

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? …

Limit Values for Packer Pressurization
2026/03/18

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…

Leveling
2026/01/28

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...

Measures Against Extreme Heat
2026/01/11

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…

Civil Engineering Is Experience-Based Engineering
2025/12/18

Civil engineering is carried out based on empirical engineering! What exactly is empirical engineering!?

Hello, everyone. This is Enta. I’m talking about a site where a mountain is slowly shifting and pushing against a structure in one area. To address this, an expert panel was convened consisting of representatives from the local government, the general contractor, the general contractor’s engineers, specialized engineers from the subcontractor, and a university professor (specializing in landslides) called in by the local government…

Soil Water Retention
2025/08/26

Looking at the plants on site gives you a good sense of the terrain and soil moisture conditions. A prime example is bamboo!

Hello, everyone. This is Enta. When I go out to survey slopes, I pay special attention to the bamboo. Well, it’s not just the bamboo—but by looking at the plants growing there, I can get a rough idea of the soil conditions. “Bamboo groves = a sign of good surface water retention,” “willows and alders = a sign of valley bottoms or high groundwater levels…”

Machinery Delivery
2025/08/13

Approaches to Material and Equipment Access Routes — Avoiding Mistakes in Mountainous Areas and Confined Sites

Hello, everyone. This is Enta. On slope construction sites and in mountainous areas, the “route for delivering materials and machinery” determines the success or failure of the project. If materials and machinery don’t reach the site, construction can’t begin. People often ask, “How are we supposed to get the materials and machinery to the site?” But without a plan…

Anchor Grout
2025/08/06

Construction Techniques for Cement Slurry Using Slow-Setting Water-Reducing Admixtures (This Will Give Your Construction Site Some Breathing Room)

Hello, everyone. This is Enta. This sweltering heat just keeps on going, doesn’t it? My air-conditioned work clothes aren’t helping at all—I’m actually much more comfortable taking them off and wearing long sleeves. Wait until the temperature drops a bit before wearing air-conditioned workwear! It’s counterproductive when it’s over 35°C! The right way to prevent heatstroke on the job site. But enough of that—let’s talk about cement mills…