Machines | What's that Infrastructure? (Ep. 1 - Transportation Infrastructure)
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Yes, he can get nerdier! Submit your photos of interesting infrastructure here: http://practical.engineering/whats-that-infrastructure/ Let me know what you think of this new series - What's that Infrastructure? - where we divulge and discover the man made world around us. Answers below (don't cheat!). 1. Tactile Paving (https://en.wikipedia.org/wiki/Tactile_paving) 2. Breakaway Sign Post (http://safety.fhwa.dot.gov/roadway_dept/policy_guide/road_hardware/ctrmeasures/breakaway/) 3. Bridge Protective Assembly (https://ftp.dot.state.tx.us/pub/txdot-info/brg/071813-webinar/nemec.pdf PDF WARNING!) Thanks for watching, and let me know what you think! Patreon: http://patreon.com/PracticalEngineering Website: http://practical.engineering Music: Elexive - Valley Santa (https://www.youtube.com/watch?v=TA7Hro7OYpc)
Comments
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you sound like Guy Raz
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New sub here. Lovvinninnigggghggh your videos!
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I honestly always thought the bumpy surfaces were for traction, and was always perplexed when they're actually very slick
I SMERT -
Street crossings in my country have sound identification, for red or green, for the bind people. On top of the speaker is a strip of metal, that signals where the they might have to wait for the sound to change to green again, if the crossing is long.
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Would videos be possible? A cool feature of my town is too big for a few pictures and is really neat (:
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I wish I still had a bunch of the pictures from when I worked at the MBTA for an internship a while back. They wouldn't let me show a lot of the stuff, but some of the equipment used to keep trains running is really interesting, and obvious. I found section breaks and train switches to be the most interesting. All the pictures I took of them got lost when my cat knocked my phone onto the floor.
Actually, on the same note, in Boston, on the Green line, there is a section of rail just ahead of Park street, where the train wheels squeal loudly going around the corner. You can always tell when people have lived in the city for a while by how they respond. The squealing actually comes from the fact that the radius the train turns on is about half the standard for train cars of that length, and the noise is the flange of the wheel coming into contact with the head of the rail. Since I worked there, they have actually changed the wheel geometry slightly to allow a little bit of extra clearance. It does not solve the problem, but it makes it considerably quieter. A quick YT search should bring up a ton of videos without that nightmare-fuel sound in it. -
This is in the Netherlands https://goo.gl/maps/LqbEWXiXjmG2 It's at the last exit before a tunnel. I suppose if you hit these wireframes if you're too tall. Your vehicle will not be damaged; and neither will the tunnel if you stop when you notice the hit. They might even trigger warning lights (most likely).
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Can we not just tweet you a photo or something?
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We have plenty of bridges with bridge strike protection in Auckland. You can see it on many of the bridges on our southern motorway as the engineers of old thought it would be best to save some money and provide minimal clearance.
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cadence of presentation reminds me of smarter every day. very cool. keep building that culture of education
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I'd love to hear what you have to say about the moon towers around town; but it's a very Austin thing. Neat though!
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Ever look at a Walmart building? I'd like to know about the engineering behind that.
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so cool
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Have you ever seen http://11foot8.com ? Now that's some bridge protection infrastructure!
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Greatings! I'm a manufacturing engineer in the northeast and we make those tactile pavers. Another interesting thing about the pavers is that they are in large part made with PLC's (a topic that does not get much love). I studied engineering and did not learn about this device until my first job. I can only imagine how many other people don't know about this industrial tool. If it doesn't fit into your topic of infrastructure, it would surely fit well somewhere else on your channel as the topic itself is not presented in any way for a mass audience elsewhere on the internet.
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I didn't know that about the sign anchors before. In fact there have been a few number of high speed impacts around my area and I have questioned several things, such as the 7-10 months taken to restore the damaged post, to the amount of the fine incurred by the fault driver, both seemed excessive. But given this new knowledge I now understand that the anchors are highly engineered devices. The fact that there wasn't deaths incurred by the impacts is a good testament to that. So, indeed the cost is high and the time to repair seems appropriate.
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I can see these infrastructure episodes being very popular. Keep them coming!
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You should do something on BMPs like tree box filters and the like!
Also, silt fence. As a kid, I always wondered what it was and could never get a straight answer from anyone until 20 years later when I got a job in the industry. -
if you make infrastructure cool, I don't even think we can imagine the number of lives saved, keep up the good work.