1,392 karma · joined October 28, 2010
Along the way, got to write code for some extremely cool platforms, including some Crays and Thinking Machines CM-2.
Nowadays, work is C/C++/Java/Javascript Enterprise software stack as a Sr Principle Software Eng for a major co.
I for one have had much of the cement replaced around my house (some more than once) and when I had the driveway redone, explicitly asked them to mitigate against the clay with whatever they had that made sense. I forget what all they had extra in the proposal that I approved (it was 10+ yrs ago) but my new driveway isn't having any issue while some neighbor's new ones are already cracked again.
Here in Denver, at least, our runways are all made of cement instead of tarmac. I knew one of the civil engineers who worked on the special blend of cement the used, and from what I remember of what he told me, it is much thicker than I expected, and has other stuff in it compared even to highway-grade cement to make it more durable. The freeze-thaw cycle is still rough on the cement, in 2007 $11 million of cement slabs had to be replaced due to that. The airport as a whole has 15,000 20-square-foot slabs across its multiple runways.
Of course, one could still have buckling with cement if the expansion joints are too close together for the expansion of adjoining slabs over a certain temperature. Perhaps this is what actually happened here?
Not shocked.
He’s started looking for a job now, hopefully this isn’t an issue for him.
Fully loaded weights for 3-axle US buses from the linked report's executive summary are 28 to 32.5 tons, empty range from 19 to 25 tons. So a not-fully loaded 3-axle bus was very likely over the 26 ton limit.
Three axle buses should not have been on that bridge. Would be interesting to see if that route was changed recently from 2-axle to 3-axle service.
[1] https://onlinepubs.trb.org/onlinepubs/tcrp/docs/TCRPJ-11Task...
Other states could also require laws like this.
I don't care who you are, I consider that a request to mine me for my data. I do not participate in survey requests from anyone.
Perhaps all this is showing is who is more willing to give up the time to take the survey and their private information?
But their blowers are not just better at drying hands than a standard blower - they are also better at spreading nastiness from people who don’t wash thoroughly. https://arstechnica.com/science/2016/04/dyson-dryers-hurl-60...