M.D. Holloway 1977 Targa ROW



Join Date: Aug 2004 Location: Rolling Hills Estates, HV TX Posts: 22,126

Engineering Question/Problem to solve: Conditions:



A backhoe weighing 22 tons is on top of a lowboy 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 inch steel rebar spaced at 6 inch intervals in a criss-cross

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. Yes, you can neglect friction

__________________

Michael D. Holloway

MLA, MLT, OMA, CLS

DOUOSVAVVM

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