Zabuton Frame
2021/08/13

Installing Zabuton Frames Requires Knowledge of Ground Anchors | Installation

Hello, everyone. This is Enta. Has the Obon holiday season officially begun for you? For some, it’s a 10-day break; for others, maybe just two days off, right? My company is closed, so technically I’m on vacation, but as expected, I’ve got a pile of work waiting for me, so I’m working anyway lol. It looks like heavy rain is on the way again, so everyone, please be careful…

Packer Pressurization
2021/08/09

Ground Anchor Construction: Packer Injection—These Are the Absolute Musts!

Hello, everyone. This is Enta. When it comes to ground anchor construction, there are times when you might need to use a packer. If you’ve never performed construction work using a packer before, I’m going to write about the one thing you absolutely must do. Pa…

Repairman
2021/07/30

If the Hydraulic Pump Fails, the Hydraulic Machine Is Done for | Maintenance

Hello, everyone. This is Enta. The other day, a hydraulic pump broke down on site lol. And it happened right when we only had two ground anchors left to go... lol. So, we had to swap out the machine on the fly, and we managed to get the drilling done somehow. However, we had to replace the pump with a brand-new one. And man, that thing was ridiculously heavy to lift…

Ring Bit
2021/07/21

Before and After Using a Metal-Cutting Bit | Consumables

Hello, everyone. It’s Enta here. The only word that comes to mind right now is “hot”! lol It’s really hot, isn’t it? lol As I’ve mentioned before, here are my posts on metal-cutting bits: “Cutting Metal! (Part 1),” “Cutting Metal (Part 2),” “Cutting Metal (Part 3),” and “Cutting Metal! (Bonus Edition).” It just so happened that it was time to replace my metal-cutting bits…

Slope Stabilization Work
2021/07/11

Construction in a Certain Area of Nagano Prefecture Was Unusual | Regional Characteristics

Hello, everyone. It’s Enta here. The other day, I saw something amazing near our construction site lol. Well, it’s a pretty unusual retaining wall. First up, here’s the first photo. Isn’t this amazing?? I’m guessing the vertical frames are 200 mm and the horizontal frames are 400 mm. I’ve never seen a retaining wall like this before lol. And the horizontal frames…

Packer Experiment
2021/06/23

When using a packer, the expansion rate is higher with pressure retention.

Hello, everyone. This is Enta. The other day, we conducted a packer test. The packer used this time was designed for a borehole diameter of φ135, with an expansion diameter of φ149 or greater (according to the manufacturer). For this test, we prepared three types of packers as shown above. The packers were 0.2…

That Thing About Flowcone
2021/06/22

Even if the flow test results don't fall within the specified range, it's okay as long as you repeat the test.

Hello, everyone. This is Enta. Are you measuring your flow rates? I’m sure you’ve often found that your results don’t fall within the specified range during these flow tests. Especially on hot summer days, lol. First, let’s start with the basics: What exactly is this flow rate measurement (flow test)?…

Construction Management
2021/06/21

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. …

Found Something Great
2021/06/20

Found a Great Product (That Thing You Use When Injecting!) | Grout

Hello, everyone. This is Enta. Survey on Rebar Insertion Work (Required for Contractors) If you haven’t yet responded to the survey on rebar insertion work mentioned above, please be sure to participate. I’ll leave it up for a while, so I’d love to hear your opinions. It’s completely anonymous…