You've probably seen this triangle before: Fast, Cheap, Good -- Pick Two. Here's a new bridge-building technique from Austria that seems to allow the customer to get a bridge that's faster, cheaper, better than traditional bridges.
From Popular Mechanics:
The umbrella method is a completely new way to construct a static final bridge. This TU Wien team first worked on the idea in 2006, and it’s been experimenting and fine tuning since then. Instead of traditional kinds of bridge building—i.e. putting up long-term scaffolding as rebar is laid and concrete is filled into structures—this mechanism is built like a “closed” umbrella and then unfolded into its final position. From there, its hollow girders are filled with concrete and the rest of the structural elements are completed.
“Erecting bridges using scaffolding usually takes months,” designer Johann Kollegger said in a statement. “The elements for the balanced lowering method, on the other hand, can be set up in two to three days, and the lowering process takes around three hours.” But this process, he says, is less invasive for bridges through protected or uneven terrain. The team's sample bridge over the Lafnitz River touches a nature preserve.
Université de Sherbrooke engineers demonstrated a wearable robotic third arm that weighs about the same as a human arm. According to Evan Ackerman writing in IEEE Spectrum, waist-worn hydraulic limb “is gentle enough to pick fruit but powerful enough to punch through a wall.” From his interview with project lead Catherine Véronneau: IEEE Spectrum: Can […]
The Lego masters at The Brick Wall built this fantastic contraption to crank out tapas. Technical details: 19 Lego PF motors 5 BuWizz Bricks 4 weeks of hard work
The best solutions are sometimes the simplest ones: “I’ve been topping off a leaky tire for weeks and staring at my garden hose wondering if I could use it instead of my compressor. The answer is YES!!!”
We live in a disposable era. If you can’t fix a broken item with a wrap of duct tape, there’s a very strong likelihood that its next destination is the trashcan. However, that probably leads to a trigger-finger death sentence for many household items that could be saved with just a bit more ingenuity. Before […]
Right tool for the right job. You probably heard a parent or grandparent say it at least once at some point. And it’s true in so many cases. If you spot a small tear in your living room curtains or near to hem a pair of pants, you can always use the good old fashioned […]
The world is holding its collective breath. As states begin cautiously reopening, no one is sure exactly what to expect. But one thing is clear: most Americans are worried about their bank accounts. By the end of March, the average American household was spending 40 percent less on their credit cards than they were one […]