Is there a Civil Engineer in the house?
Moderator: Harold_V
Is there a Civil Engineer in the house?
Yesterday a busy bridge approach over the Chicago River, on Lake Shore Drive, started to shear apart in two girders. Traffic is stopped in all the northbound lanes, until they can build a temporary structure to support it directly under the two shear cracks of the two girders.
My problem, is why wasn't the concrete pier placed under all those joints when the bridge was built?
That joint as built was in shear, if the pier had been under the joints the joints would have been in compression, and not have failed.
So, this is in the province of Civil Engineering; anybody out there?
My problem, is why wasn't the concrete pier placed under all those joints when the bridge was built?
That joint as built was in shear, if the pier had been under the joints the joints would have been in compression, and not have failed.
So, this is in the province of Civil Engineering; anybody out there?
Re: Is there a Civil Engineer in the house?
Holy Moly! That bridge support design looks SO wrong!
Perhaps designed by an UNcivil engineer?
Maybe a construction error, and someone said:
"Oh, it will be OK..."
Yea. For a while.
Keep us posted on resolution, please.
~RN
Perhaps designed by an UNcivil engineer?
Maybe a construction error, and someone said:
"Oh, it will be OK..."
Yea. For a while.
Keep us posted on resolution, please.
~RN
- SteveHGraham
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Re: Is there a Civil Engineer in the house?
The construction companies belonged to two different Mafia families, and they didn't communicate well. The concrete is also problematic because it's full of dead guys named Vinnie.
Every hard-fried egg began life sunny-side up.
- SteveHGraham
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Re: Is there a Civil Engineer in the house?
Also, your video is taking forever to load.
Every hard-fried egg began life sunny-side up.
Re: Is there a Civil Engineer in the house?
Here are a lot more details:
https://www.google.com/search?source=hp ... m1XViN48Ns
Because I drive a pickup truck,(supposedly cars only) and live ~ 45 miles to the northwest, it's been decades that I drove on that road.
The first photo is not a video, but a screen capture.
https://www.google.com/search?source=hp ... m1XViN48Ns
Because I drive a pickup truck,(supposedly cars only) and live ~ 45 miles to the northwest, it's been decades that I drove on that road.
The first photo is not a video, but a screen capture.
- SteveHGraham
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Re: Is there a Civil Engineer in the house?
You murdered my joke.
Every hard-fried egg began life sunny-side up.
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Re: Is there a Civil Engineer in the house?
Mob, not Mafia. It's in Chicago.SteveHGraham wrote: ↑Tue Feb 12, 2019 11:36 am The construction companies belonged to two different Mafia families, and they didn't communicate well. The concrete is also problematic because it's full of dead guys named Vinnie.
Plausible explanation: Due to some oversight such as a failure to read some Federal regulation closely enough it was discovered after the steel had been ordered that the pier spacing had to be slightly wider than had been planned. Then someone who should not have signed off on the change order.
[Edit] Here's a document on girder splicing: https://www.fhwa.dot.gov/bridge/steel/p ... lume14.pdf
The splices in that photo look wierd to me (but I'm not a CE).
- SteveHGraham
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Re: Is there a Civil Engineer in the house?
The urge to "correct" people on the Internet is an amazing thing. I shouldn't take the bait, but the "mob" is, in fact, part of the Mafia, as various sites will tell you, and it is also referred to as "the Outfit."
I feel like I'm doing standup in front of Dustin Hoffman in Rain Man. I can't remember the last time I regretted making a joke this much.
Next someone will claim that biscuity glop they serve in Chicago is pizza.
I feel like I'm doing standup in front of Dustin Hoffman in Rain Man. I can't remember the last time I regretted making a joke this much.
Next someone will claim that biscuity glop they serve in Chicago is pizza.
Every hard-fried egg began life sunny-side up.
Re: Is there a Civil Engineer in the house?
I am not a CE either.
But, every bridge that I have looked at has had some kind of expansion joint OVER a pier and sitting on a roller or rocking pad. Mr. Hasler is most likely correct that the pier is in the wrong place or the girders were cut wrong, or worse, installed in the wrong spot. That would mean there is another joint not in the right location. WoHoo!
Reminds me of the recent debacle in Akron, OH.https://fox8.com/2018/12/03/semi-carryi ... 77-closed/
--earlgo
But, every bridge that I have looked at has had some kind of expansion joint OVER a pier and sitting on a roller or rocking pad. Mr. Hasler is most likely correct that the pier is in the wrong place or the girders were cut wrong, or worse, installed in the wrong spot. That would mean there is another joint not in the right location. WoHoo!
Reminds me of the recent debacle in Akron, OH.https://fox8.com/2018/12/03/semi-carryi ... 77-closed/
--earlgo
Before you do anything, you must do something else first. - Washington's principle.
- SteveHGraham
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Re: Is there a Civil Engineer in the house?
Maybe lawyers sneaked onto the site at night and moved the pillar.
Every hard-fried egg began life sunny-side up.
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Re: Is there a Civil Engineer in the house?
Organized crime not really being very well organized being pedantic about such regional slang as "The Outfit" or "The Mob" is a joke. Which is how I intended my remark.
> Next someone will claim that biscuity glop they serve in Chicago is pizza.
Won't be me. Open-face pot pie.
> Next someone will claim that biscuity glop they serve in Chicago is pizza.
Won't be me. Open-face pot pie.
- SteveHGraham
- Posts: 7788
- Joined: Sat Jan 17, 2009 7:55 pm
- Location: Florida
Re: Is there a Civil Engineer in the house?
Maybe we just shouldn't joke. Maybe there is some kind of remedial humor class.
Every hard-fried egg began life sunny-side up.