# Engineering Quiz **URL:** https://forums.speedlife.net/t/engineering-quiz/183174 **Category:** PittSpeed Off Topic **Created:** [June 27, 2006, 11:19am UTC](https://forums.speedlife.net/t/engineering-quiz/183174 "2006-06-27T11:19:36Z") **Posts on this page:** 19 **Page:** 1
### Author: ![SMort38](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smort38/32/6008_2.png) [@SMort38](https://forums.speedlife.net/u/SMort38) #### Post date: [June 27, 2006, 11:19am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/1 "2006-06-27T11:19:36Z")
Engineering Quiz Time A Backhoe weighing 8 tons is on top of a flatbed trailer and 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 6 inch intervals in a crisscross pattern layered at 1 foot vertical spacing. Solve: When the shovel arm hits the overpass, how fast do you have to be going to slice the bridge in half? (Assume no effect for headwind and no braking by the driver…) 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. ---
### Author: ![SMort38](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smort38/32/6008_2.png) [@SMort38](https://forums.speedlife.net/u/SMort38) #### Post date: [June 27, 2006, 11:20am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/2 "2006-06-27T11:20:19Z")
![http://www.pittspeed.com/uploaded/pic05249_1.jpg](http://www.pittspeed.com/uploaded/pic05249_1.jpg) ![http://www.pittspeed.com/uploaded/pic16519_1.jpg](http://www.pittspeed.com/uploaded/pic16519_1.jpg) ![http://www.pittspeed.com/uploaded/pic20600_1.jpg](http://www.pittspeed.com/uploaded/pic20600_1.jpg) ---
### Author: ![bics56](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bics56](https://forums.speedlife.net/u/bics56) #### Post date: [June 27, 2006, 11:22am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/3 "2006-06-27T11:22:49Z")
:owned: ---
### Author: ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars) #### Post date: [June 27, 2006, 11:23am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/4 "2006-06-27T11:23:25Z")
faster? ---
### Author: ![imported\_gearhead](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_gearhead/32/5957_2.png) [@imported\_gearhead](https://forums.speedlife.net/u/imported_gearhead) #### Post date: [June 27, 2006, 11:24am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/5 "2006-06-27T11:24:54Z")
that is NICE!!! ---
### Author: ![green](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/green/32/5996_2.png) [@green](https://forums.speedlife.net/u/green) #### Post date: [June 27, 2006, 11:27am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/6 "2006-06-27T11:27:37Z")
someone wasnt paying attenion:rofl: ---
### Author: ![MONTE\_SS](https://avatars.discourse-cdn.com/v4/letter/m/8797f3/32.png) [@MONTE\_SS](https://forums.speedlife.net/u/MONTE_SS) #### Post date: [June 27, 2006, 11:29am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/7 "2006-06-27T11:29:04Z")
faster the the truck was hauling it could go, assuming that the truck was going 70-75 MPH, torn half the bridge apart., 150mph would have torn 80% of the bridge apart, if indeed the backhoe would not have skewed from its position, I would say closer to 180mph, and 1000yards to stop. ---
### Author: ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy) #### Post date: [June 27, 2006, 11:29am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/8 "2006-06-27T11:29:56Z")
> **[FACT CHECK: Hoe Down](https://www.snopes.com/fact-check/hoe-down/)** > > Photographs show a hoe excavator that crashed into a highway overpass. ---
### Author: ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA) #### Post date: [June 27, 2006, 11:30am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/9 "2006-06-27T11:30:01Z")
Pretty cool! ---
### Author: ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino) #### Post date: [June 27, 2006, 11:33am UTC](https://forums.speedlife.net/t/engineering-quiz/183174/10 "2006-06-27T11:33:35Z")
wow, that is nuts ---
### Author: ![BlkP42E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blkp42e/32/5938_2.png) [@BlkP42E](https://forums.speedlife.net/u/BlkP42E) #### Post date: [June 27, 2006, 1:24pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/11 "2006-06-27T13:24:37Z")
job opening? ---
### Author: ![nh4442](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nh4442/32/6005_2.png) [@nh4442](https://forums.speedlife.net/u/nh4442) #### Post date: [June 27, 2006, 1:33pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/12 "2006-06-27T13:33:03Z")
haha ---
### Author: ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter) #### Post date: [June 27, 2006, 2:06pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/13 "2006-06-27T14:06:19Z")
guess it wasnt quik driving! ---
### Author: ![yamaha](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/yamaha/32/5929_2.png) [@yamaha](https://forums.speedlife.net/u/yamaha) #### Post date: [June 27, 2006, 2:22pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/14 "2006-06-27T14:22:32Z")
134k for repair will be making his wallet hurt. ---
### Author: ![The1SloR\_T](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/the1slor_t/32/5984_2.png) [@The1SloR\_T](https://forums.speedlife.net/u/The1SloR_T) #### Post date: [June 27, 2006, 2:34pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/15 "2006-06-27T14:34:31Z")
thats awesome ---
### Author: ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L) #### Post date: [June 27, 2006, 3:27pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/16 "2006-06-27T15:27:25Z")
neat ---
### Author: ![AeroKing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/aeroking/32/6011_2.png) [@AeroKing](https://forums.speedlife.net/u/AeroKing) #### Post date: [June 27, 2006, 3:57pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/17 "2006-06-27T15:57:58Z")
who in their right mind would drop a bridge on a backhoe??? ---
### Author: ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L) #### Post date: [June 27, 2006, 5:46pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/18 "2006-06-27T17:46:26Z")
> [@AeroKing](#): > > who in their right mind would drop a bridge on a backhoe??? :kekegay: ---
### Author: ![MONTE\_SS](https://avatars.discourse-cdn.com/v4/letter/m/8797f3/32.png) [@MONTE\_SS](https://forums.speedlife.net/u/MONTE_SS) #### Post date: [June 27, 2006, 9:32pm UTC](https://forums.speedlife.net/t/engineering-quiz/183174/19 "2006-06-27T21:32:29Z")
lol nice