Time to play: "Engineering Quiz Time" ~Challenge yourself here...

[Vernon in Virginia~Formerly Alaska]

OK participants, the clock is running!

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 at 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.

Answer - Who cares, the trucking company just bought themselves a bridge.

[attachment 29529 pic20600_1.jpg]

[attachment 29530 pic05249_2.jpg]

[attachment 29531 pic16519_3.jpg]

 

[Ed SW Fla]

n/t

 

[Fred/in Fla.]

n/t

 

[Bobbie]

n/t

 

[Elson(La)]

n/t

 

[Paul (AR)]

n/t

 

[Ed SW Fla]

n/t

 

[Craig in Alabama]

n/t

 

[Craig in Alabama]

n/t

 

[General Ray]

n/t

 

[General Ray]

n/t

 

[charlie (ky)]

n/t

 

[diggercoins67]

You cant fix stuiped

 

[James in Alabama]

n/t

 

[nate-wi]

...what were the drivers thinking that were on the overpass when they see a crane come barrelling through their strip of highway...wow