Last week, Japanese construction workers earned plenty of praise after they were able to repair a gigantic 90 foot by 88 foot by 50 foot sinkhole that formed in Fukuoka, Japan in the middle of a 5 lane road in under a week. A timelapse video of the repair can be watched by clicking here. This week, CNN reported that the road had to be closed again after it began to sink again.
According to the reports, sections of the repaired road sunk up to 2.7 inches (7cm) in some areas causing some public concern. The road has since been reopened, but the road sinking like this should not be a huge surprise, especially to those on the earthwork side of things. After having to fill the hole with roughly 200,000 cubic feet of soil in such a short period of time, it was not possible for the soil to reach peak compaction. Each cubic foot of soil can weigh between 74 and 110 pounds, so, using a conservative estimate of 92 pounds per cubic foot, that’s equals almost 20 million pounds of material. That extreme amount of weight is bound to cause some considerable settling.
The mayor of Fukuoka, Takashima Soichiro, took to Facebook to apologize to the residents for not warning them the road may sink again. It has since been reopened, but the settlement could continue for a while longer. The city recently sustained an earthquake, which measured a 3 on the Richter scale, which may have also contributed to the drop.
You can watch the video of the repair, by Hakata,JAPAN LOVE, again below:
The team at Tool Box Buzz (TBB) is at it again with another super comprehensive tool comparison video and, this time, their focus is on 4-1/2” to 6” angle grinders.
The following is a guest post by Patrick Barthet.
We’re all familiar with graffiti. There’s been plenty of it around for a very long time. Those of us who live in Miami have even seen it develop into an art form. Wynwood Walls has been transformed into an international tourist attraction, exhibiting spectacular and visually stunning outdoor murals by a variety of aspiring artists. Of all the forms of graffiti, tagging may be the most popular - spray painting one’s name, initials or symbols, on someone else’s property, often times a building, a highway sign, or even a piece of construction equipment, any place where it can be readily seen by as many folks as possible.
Large contractors are always on the hunt for the locations with the most amount of work and, according to a new report, they don’t have to really spread too thin to have a chance at most of it.
3D printing technologies have significantly improved over the past few years and some have even made it to the jobsite. Not to be outdone, NASA, your favorite America space exploration organization, has announced a plan to being building and manufacturing in low-Earth orbit.
In 2017, President Trump signed an executive order expanding the role of apprenticeships in America, in hopes that it would help build the workforce in many skilled trades. In late June, the US Department of Labor (DOL) announced yet another expansion, but this time it left out the construction industry.
When you need to demolish a building in a tight downtown setting, you make sure to hire people who have the right experience to do the job. Controlled Demolition, Inc (CDI), was at it again recently, when they shared a video of a recent building implosion in Dallas, TX.
Construction Junkie's 5th Annual Best Construction Podcast Competition has officially come to an end and the results have been tallied. It was a very exciting competition this year, with several very strong competitors pulling in tons of votes.
Modular Construction has been touted for years as a major disruptor in the construction industry, but the building method has been slow to take off as expected. We’ve recently seen a spike in demand for modular building, especially in the hotel and multi-family housing sectors, which has been driving many new projects across the world. A recent report highlights the trends and potential time and cost savings the method could provide.
I’ve been very fortunate over the course of my relatively short career in construction to spend time focusing on many different aspects of construction. I recently spent about two and a half years working in site development and Storm Water Pollution Prevention Plan (SWPPP) compliance on a national scale and I wanted to share some of the insights that I gained from that experience.
Falls are, by far, the leading cause of fatalities in the construction industry, accounting for nearly 40% each year. That fact is the main reason why personal fall protection devices are so heavily stressed in the industry. But, even if your fall is arrested by a harness, you’re not out of the woods yet, as serious complications can happen while you’re being suspended in the air.