The huge Maurice J. Tobin Bridge that links Boston and the communities to the north is just three years shy of its 60th birthday. Every morning and sometimes in the evening, the two and one quarter mile cantilevered truss bridge backs up with Boston’s famously awful bumper to bumper traffic. With the horrific Minneapolis I-35 bridge collapse last night, it makes one trapped in traffic on "The Tobin" all more nervous.
I have been mid-span which the roadway bump literally starts bouncing which is especially pronounced when a trick goes by. I’m told it’s supposed to do this to relieve stress. Nonetheless, it’s unnerving given you’re 135 feet above busy Boston Harbor represented at that point by the Mystic River. The sensation of potential danger is accentuated by a large and much publicized LNG depot about a fifth of a mile upriver.
And it’s an old bridge like many in America. On Sept. 10, 1973, an overloaded gravel truck was headed north and hit a bridge beam bringing down a section of the southbound roadway above. A similar accident occurred in 1995. Besides localized damage, the bridge as a whole stood tall. And 34 days after the 1973 accident, the bridge was threatened yet again by a giant fire that destroyed 18 city blocks in Chelsea, Mass.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
A recent example of a major CAE revamp is MSC Apex, released last month by MSC Software Corp. In a discussion with Design News, MSC executives noted that its next-generation platform is designed to substantially reduce CAE modeling and process time, “in some cases from weeks down to hours.”
The Thames Deckway would run for eight miles close to the river’s edge, rising and falling slightly with the tidal cycle. It will generate its own energy from a series of devices that will line the pathway and use a combination of sources to make the path self-sustaining.
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.