The four-year-old $14.8 billion Big Dig in Boston is up to its old tricks of behaving like a 70-year-old tunnel. The problem this time around are leaks, which are up 18% over last year after Massachusetts officials pledged to reduce them to a trickle, according to the Boston Globe. Every months, the Big Dig pumps out 2 million gallons of water. In late 2004, the Globe reported that Bechtel officials said the leaks were "normal" and would take a few months to fix. The Globe’s story yesterday shows a partially flooded roadway in the tunnel whose 6-8 lanes wend there way under downtown Boston for about two miles. The leaks relevation comes just after lawyers for the family of the late Milena Del Valle rejected a settlement offer from a mediator representing 15 companies that design, managed and built the Big Dig, the largest highway project ever in U.S. Riding as a passenger, Del Valle was crushed by a suspended concrete ceiling panel that fell on car on the evening of July 10 last year. The project’s main contractor is Bechtel/Parsons Brinckerhoff.
As for the leaks, they’ve been reduced from 3,500 to 800 since 2004, but in some cases, the grout patches keep re-opening. It’s amazing they can’t get this given that the project was projected to cost $2.85 billion in 1985.
Unlike industrial robots, which suffered a slight overall slump in 2012, service robots continue to be increasingly in demand. The majority are used for defense, such as unmanned aerial vehicles (UAVs); and agriculture, such as milking robots.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
These are the toys that inspired budding engineers to try out sublime designs, create miniature structures, and experiment with bizarre contraptions using sets that could be torn down and reconstructed over and over.
PowerStream is deploying the microgrid at its headquarters to demonstrate how people can generate and distribute their own energy and make their homes and businesses more sustainable through renewables.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.