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My name is Michael Weston. I used to be a spy, until...*bridge collapses*
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# ? Mar 17, 2018 04:41 |
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# ? May 26, 2024 10:29 |
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Is that a dude falling on the left?
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# ? Mar 17, 2018 04:49 |
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Have they found that the collapse occurred because someone notched the top of the bridge to install a bathtub?
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# ? Mar 17, 2018 04:49 |
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china bot posted:My name is Michael Weston. I used to be a spy, until...*bridge collapses* *breathes orally*
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# ? Mar 17, 2018 05:37 |
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IPCRESS posted:Have they found that the collapse occurred because someone notched the top of the bridge to install a bathtub? grover bridj
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# ? Mar 17, 2018 06:20 |
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turn off the TV posted:I can't imagine how difficult it's going to be for the people of miami trying to commute to work tomorrow. I hope they stay strong. Thoughts and prayers.
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# ? Mar 17, 2018 11:05 |
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It's interesting that this bridge had cracking bad enough to pique an engineer's interest The general rule is if you don't want concrete to crack, don't pour it. So if people start worrying about cracking, it's got to be pretty loving bad, and this thing was already heading up the big slide when the post-tension guys went up to try and save it e: and then the post tension guys got on the jack, started pulling, saw the needle wasn't moving on the gauge even though the bar was pulling out, went "huh that's weird" and then KERBLAMMO
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# ? Mar 17, 2018 14:56 |
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Nerses IV posted:It's interesting that this bridge had cracking bad enough to pique an engineer's interest This is kinda why I suspect it was a repair that might not have gone quite as planned. You're right about repairs being really hair-raising in monostrand- i look at these procedures and i wonder how the hell they don't tear up a bunch of other cables/rebar when they do it and such. I've seen some procedures that are kinda nuts.
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# ? Mar 17, 2018 14:59 |
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Panzeh posted:This is kinda why I suspect it was a repair that might not have gone quite as planned. Haha, well... the short answer is, they do We used to have bandlines that were about 800 feet long, pulled at both ends and at the construction joint in the middle, and if somebody broke one in the second pour (this happened all the time, you see there's floor-to-ceiling windows running along the entire south side of the building............) we'd have to use one of these These things were my loving enemy
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# ? Mar 17, 2018 15:10 |
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No one has the balls to say it? Obvious false flag op
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# ? Mar 17, 2018 15:31 |
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meat police posted:No one has the balls to say it? Obvious false flag op yeah tbh i've suspected the bridge was a crisis actor for a while now for shame, florida
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# ? Mar 17, 2018 17:33 |
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Finding out that all the bad politics posters are engineering nerds is unsurprising but still satisfying.
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# ? Mar 17, 2018 17:47 |
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let it mellow posted:oh yeah because u set up a detour for a couple hours This dude is majorly getting worked up because someone suggested that they should have had a detour while loving around with the bridge that killed 8 people lmao.
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# ? Mar 17, 2018 22:46 |
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Let it Mellow, just can't let it mellow.
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# ? Mar 17, 2018 23:15 |
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Arrhythmia posted:This dude is majorly getting worked up because someone suggested that they should have had a detour while loving around with the bridge that killed 8 people lmao. Well, they do have a detour set up now.
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# ? Mar 18, 2018 00:47 |
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Fame Douglas posted:Well, they do have a detour set up now.
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# ? Mar 18, 2018 00:51 |
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cda posted:Finding out that all the bad politics posters are engineering nerds is unsurprising but still satisfying.
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# ? Mar 18, 2018 00:51 |
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Fame Douglas posted:Well, they do have a detour set up now. I wonder how long it took them to set up
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# ? Mar 18, 2018 00:52 |
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if this is what passes for a pedestrian bridge collapse in america i'd hate to see an extraordinary one
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# ? Mar 18, 2018 00:55 |
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Prav posted:if this is what passes for a pedestrian bridge collapse in america i'd hate to see an extraordinary one
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# ? Mar 18, 2018 00:59 |
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Prav posted:if this is what passes for a pedestrian bridge collapse in america i'd hate to see an extraordinary one
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# ? Mar 18, 2018 01:01 |
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Arrhythmia posted:This dude is majorly getting worked up because someone suggested that they should have had a detour while loving around with the bridge that killed 8 people lmao. He was joking. Dude even said so
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# ? Mar 18, 2018 01:03 |
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Raldikuk posted:I'm the gigantic smoke ring in the sky that was God going OOOOOOOOOH poo poo
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# ? Mar 18, 2018 01:38 |
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Nerses IV posted:Haha, well... the short answer is, they do Am I understanding correctly that what's happened is this But that black (rubber?) thingy is supposed to make it seem as if nothing ever happened
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# ? Mar 18, 2018 02:12 |
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the speed of the collapse is hilarious like it fell to the ground with a cartoon splat
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# ? Mar 18, 2018 02:17 |
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Arrhythmia posted:This dude is majorly getting worked up because someone suggested that they should have had a detour while loving around with the bridge that killed 8 people lmao.
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# ? Mar 18, 2018 02:46 |
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# ? Mar 18, 2018 02:48 |
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Supreme Allah posted:Am I understanding correctly that what's happened is this I think the end of each wire is doubled back.
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# ? Mar 18, 2018 02:52 |
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# ? Mar 18, 2018 02:52 |
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# ? Mar 18, 2018 03:02 |
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lol Prav posted:if this is what passes for a pedestrian bridge collapse in america i'd hate to see an extraordinary one lol
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# ? Mar 18, 2018 03:21 |
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Why does a bridge even need insulation?
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# ? Mar 18, 2018 03:31 |
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# ? Mar 18, 2018 04:00 |
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Is that a person standing on it on the left side?
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# ? Mar 18, 2018 04:04 |
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EX250 Type R posted:Is that a person standing on it on the left side? Not anymore!
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# ? Mar 18, 2018 05:12 |
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Im the school bus that almost got flattened had I been a couple seconds ahead of schedule
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# ? Mar 18, 2018 05:21 |
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This is pretty much what's happening, yeah. You pull on both of those cable tails and the (steel) splice coupler holds them both in place, making the thing act like a single tendon under tension. It's scary as hell because they're getting pulled at weird angles and at some point, one half of the cable will be under tension, and the other half won't be, so you're sitting there loving around with something that wants to explode, way outside the preferred methods for stressing a cable. That cable was supposed to be stressed to 33 kips, at which point it would back off to around 28 kips while the little gripping wedges inside the coupler (or the anchor, on an undamaged cable) engage and keep the cable from retracting any farther. We didn't get anywhere near that on that one because it was INCREDIBLY grumpy when we started pulling on it (wedge failure that sent glowing bits of steel flying everywhere type of grumpy), so we pretty much got some decent tension and got the gently caress away from it. This whole stressing procedure happened on a Saturday, and we told anyone working on that floor or the one below to take a break since that cable runs the entire length of the building. I guess the PT guys working on the bridge had to do it in the middle of the day with a bunch of cars beneath them because, well, they don't call it Accelerated Bridge Construction for nothin'
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# ? Mar 18, 2018 14:11 |
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Nerses IV posted:This is pretty much what's happening, yeah. You pull on both of those cable tails and the (steel) splice coupler holds them both in place, making the thing act like a single tendon under tension. It's scary as hell because they're getting pulled at weird angles and at some point, one half of the cable will be under tension, and the other half won't be, so you're sitting there loving around with something that wants to explode, way outside the preferred methods for stressing a cable. My company used a different kind of coupler for repairs which was just a cylinder where you put in cable from each direction and it acted like the Chinese finger trap.
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# ? Mar 18, 2018 14:45 |
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# ? May 26, 2024 10:29 |
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Panzeh posted:My company used a different kind of coupler for repairs which was just a cylinder where you put in cable from each direction and it acted like the Chinese finger trap. For like 99% of our repairs we used the same thing, the only reason those double splice ones are """"""""good"""""""" is because you can stress the cable at the site of the repair instead of at the anchor
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# ? Mar 18, 2018 14:56 |