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Author Topic: I 70 bridge out near Hays, Kansas  (Read 6464 times)

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reo

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I 70 bridge out near Hays, Kansas
« on: July 01, 2007, 07:04:11 PM »
I got this sent to me as a joke but I checked snopes and its true.



ENGINEERING CALCULATION

Problem:  A backhoe weighing 8 tons is on top of a flatbed trailer heading east on Interstate 70 near Hays, Kansas.  The extended shovel arm is made of hardened refined steel and the approaching overpass is made of commercial-grade concrete, reinforced with 1 1/2 inch steel rebar spaced at 6 inch intervals in a criss-cross pattern layered with 1 foot vertical spacing.

Solve:  When the shovel arm hits the overpass, how fast does the trailer with the backhoe have to be going to slice the bridge in half?  (Assume no headwind and no braking by the driver who is oblivious of the situation . . . )

Extra Credit: Solve for the time and distance required for the entire rig to come to a complete stop after hitting the overpass at the speed calculated above


See below.......
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #1 on: July 01, 2007, 07:05:32 PM »
1st pic
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #2 on: July 01, 2007, 07:06:04 PM »
2nd
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #3 on: July 01, 2007, 07:06:33 PM »
3rd
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #4 on: July 01, 2007, 07:07:08 PM »
4th
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #5 on: July 01, 2007, 07:08:59 PM »
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Fired00d

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Re: I 70 bridge out near Hays, Kansas
« Reply #6 on: July 01, 2007, 07:09:51 PM »
Wow!!!! Can you imagine riding along minding your own business on the bridge going over that road and all of a sudden there is a crane boom coming at you from underneath. :vrolijk27: :shocked2:

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Re: I 70 bridge out near Hays, Kansas
« Reply #7 on: July 01, 2007, 07:25:00 PM »
Quote from: Fired00d on July 01, 2007, 07:09:51 PM
Wow!!!! Can you imagine riding along minding your own business on the bridge going over that road and all of a sudden there is a crane boom coming at you from underneath. :vrolijk27: :shocked2:

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Yeah.........really..........and I'm headed back to Kansas this week, and believe me, in that state, you can REALLY mind your own business when riding.
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Special_Ed

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Re: I 70 bridge out near Hays, Kansas
« Reply #8 on: July 01, 2007, 08:17:05 PM »
Yeah, boss, well I had a little, well, a little problem moving that machine you asked me to move for you, seems that bridge on I-70, yeah, well it doesn't really have the clearance you thought...... :nervous:
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #9 on: July 01, 2007, 08:22:18 PM »
Quote from: Special_Ed on July 01, 2007, 08:17:05 PM
Yeah, boss, well I had a little, well, a little problem moving that machine you asked me to move for you, seems that bridge on I-70, yeah, well it doesn't really have the clearance you thought...... :nervous:

Get your check book out boss, you just bought a bridge

Roy......
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Special_Ed

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Re: I 70 bridge out near Hays, Kansas
« Reply #10 on: July 01, 2007, 08:40:03 PM »
Quote from: reo on July 01, 2007, 08:22:18 PM
Get your check book out boss, you just bought a bridge

Roy......

Oh yeah the insurance company is gonna love this guy!
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reo

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Re: I 70 bridge out near Hays, Kansas
« Reply #11 on: July 01, 2007, 08:41:26 PM »
Quote from: Special_Ed on July 01, 2007, 08:40:03 PM
Oh yeah the insurance company is gonna love this guy!

I'm thinking the lien list has already been typed out for this guy.

Roy......
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Special_Ed

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Re: I 70 bridge out near Hays, Kansas
« Reply #12 on: July 01, 2007, 09:23:08 PM »
Quote from: reo on July 01, 2007, 08:41:26 PM
I'm thinking the lien list has already been typed out for this guy.

Roy......

I'm sure the State of Kansas in going to be at the top of that list.
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Twolanerider

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Re: I 70 bridge out near Hays, Kansas
« Reply #13 on: July 01, 2007, 09:37:22 PM »
I really would've thought the bridge would've won  :nixweiss: ?
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cuthbertss

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Re: I 70 bridge out near Hays, Kansas
« Reply #14 on: July 01, 2007, 10:14:14 PM »
Quote from: Twolanerider on July 01, 2007, 09:37:22 PM
I really would've thought the bridge would've won  :nixweiss: ?
\
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