After the sinkhole appeared on November 8, subcontractors worked around the clock to fill in the 30 meter (98 ft) wide, 15 meter (50 ft) deep hole by the 12th with a mixture of sand and cement. The job was complicated by the water which had seeped in from sewage pipes destroyed by collapsing sections of road.
After that it only took another 48 hours to reinstall all utilities -- electricity, water, sewage, gas and telecommunication lines -- and to resurface the road. There were no reports of injuries.
From Practical Engineering: Traffic management in dense urban areas is an extremely complex problem with a host of conflicting goals and challenges. One of the most fundamental of those challenges happens at an intersection, where multiple streams of traffic – including vehicles, bikes and pedestrians – need to safely, and with any luck, efficiently, cross […]
Practical Engineering is a video series that clearly and entertainingly explains how public infrastructure works – dams, water towers, bridges, reservoirs, and so on. Above: how water towers work. [via Doobybrain]
James "New Aesthetic" Bridle (previously) is several kinds of provocateur and artist (who can forget his autonomous vehicle trap, to say nothing of his groundbreaking research on the violent Youtube Kids spammers who came to dominate the platform with hour+ long cartoons depicting cartoon characters barfing and murdering all over each other?).
Remember when the default state of your online presence was anonymity? That’s not so clear-cut anymore, and the worst part is you may not even know who is using your data or what they’re using it for. Small wonder that so many people are choosing to surf through virtual private networks. VPNs filter web access […]
Get ready for the stream of your dreams, binge-watchers. There’s a contest afoot, and at stake is a lifetime subscription to Netflix. All you have to do is sign up, and you’re entered to win this ultimate Netflix plan. When does it expire? Only when you do. And hey, just in case you need something […]
There’s overwhelming support for clean energy, and the planet is giving us more reasons to invest in renewable power sources with every passing year. Even in the most inhospitable areas, wind and solar can provide a good chunk of our power, if not all of it. So why aren’t we all taking advantage of it? […]