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Is this even possible? 240-ton load on Interstate...
Posted by: MrNoBody
Date: April 20, 2017 07:32PM
Quote
WBFF-TV
Truck loses 480,000-pound cargo on 695 at Rt. 1
OVERLEA, Md. (WBFF) - A massive load that fell off a truck has closed the right lane on the outer loop of I-695 near Bel Air Road and is expected to affect traffic through much of Thursday, reported State Highway Administration.

The item, described only as a "power unit," weighs 480,000 pounds, said SHA spokesperson Charlie Gischlar. He said the truck has a permit to carry the item and it is not hazardous, but he did not immediately know what it was.
source

The section of I-695 in question has bridges, how is it possible to carry
240 tons on the roadway?
And, what kind of truck can pull such a load?
(The video of the scene seems to show a conventional semi-truck.)

For comparison, a GE Evolution Locomotive has a dry weight of 440,000 lbs.



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Re: Is this even possible? 240-ton load on Interstate...
Posted by: freeradical
Date: April 20, 2017 07:41PM
Looks like a lot of wheels.

Pressure = force/area

An elephant can step on someone's chest without crushing it. They have a board on the persons chest to make sure.

The heel of quarter inch pumps develop 1600 psi if a woman weighs 100 pounds...
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: billb
Date: April 20, 2017 07:42PM
That's a lot of axles at 20,000 pounds per axle.

Probably a purpose built trailer like that one that carried that 340 ton boulder thru Los Angeles a year or so ago.



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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Racer X
Date: April 20, 2017 07:47PM
lots of wheels, as has been said. My "brother" in law is a truck driver, delivering exotic lumber. His trailer has 2 crank up/down wheel assemblies for when he hits a certain trailer weight. The extra 2 wheels allow a higher load capacity. Once again, its about pounds per square inch contact pattern.
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Speedy
Date: April 20, 2017 08:41PM
Lots of ways to move heavy loads down the highway. Just check out heavy loads on YouTube. These moves are so well planned by very experienced professionals that something like what happened here is very rare in this country.

Heavy loads, besides having lots of axles, are hauled on very, very long units which allow them to even cross long suspension bridges safely. Every foot of the route is blessed by engineers. They move the load as far as they can on water.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.



Edited 1 time(s). Last edit at 04/20/2017 08:49PM by Speedy.
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Filliam H. Muffman
Date: April 20, 2017 08:51PM
Federal law is 20,000 lbs per 4 wheel axle, must be spaced over 96" apart. The pic below is a trailer hauling about 800,000 lbs.





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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Speedy
Date: April 20, 2017 09:10PM
It sounds like it's a generator and looks like there is a broken axle(s). The generator is still on the unit but the haul unit may have deformed and might need to be replaced. This will be quite the effort and will not be quick. It could take days.

The tractor is just a typical drive unit that might be 600HP. It would take some time to get up to speed but could stop fairly quickly with all those wheels. What looks like one axle from the side is probably two axles, side by side, each supporting a frame rail (air suspension). That means there are eight tires and four brakes on the side by side set.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Speedy
Date: April 20, 2017 09:16PM
Quote
Filliam H. Muffman
Federal law is 20,000 lbs per 4 wheel axle, must be spaced over 96" apart. The pic below is a trailer hauling about 800,000 lbs.


That looks like a turbine. The big framework on the very top is cradling the suspended turbine and allows for the load to be centered on all the axles, forward and rearward. The turbine probably came near to its destination by barge or rail and is only being trucked the last miles. You can see at least one pusher truck at the rear to help with hills. Neither tractor is supporting any of the load and you can see a block over the drive axles for traction. The actual 'trailer' is the flat frame over the axles. The rest is just superstructure supporting the load in just the right place on the trailers.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.



Edited 2 time(s). Last edit at 04/20/2017 09:24PM by Speedy.
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: hal
Date: April 20, 2017 10:02PM
Moving a 320 ton rock through LA - they made a movie about it [www.imdb.com]
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Grateful11
Date: April 20, 2017 11:18PM




Grateful11
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Racer X
Date: April 21, 2017 12:46AM
When I saw it was Maryland, I figured it was brought to the coast by a ship, and is being moved inland by truck.

The US has very little heavy manufacturing to make massive castings anymore. Most big power industry stuff comes from S Korea or China.
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: GGD
Date: April 21, 2017 12:47AM
For the Shuttle, size was probably more of a challenge than weight, it's weight was closer to 75 tons.

Quote
Grateful11
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: max
Date: April 21, 2017 06:17AM
Quote
Racer X
as very little heavy manufacturing to make massive castings anymore. Most big power industry stuff comes from S Korea or China.

Even production castings are a problem, it is China and India today......
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Re: Is this even possible? 240-ton load on Interstate...
Posted by: MrNoBody
Date: April 21, 2017 06:16PM
thxs to all for the informative posts

Never too old to learn something new thumbsup smiley



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Re: Is this even possible? 240-ton load on Interstate...
Posted by: Racer X
Date: April 21, 2017 08:15PM
Up in Everett WA, they drive Boeing jumbos on a freeway overpass to the other part of the Boeing plant. First time I saw that it was bizarre.

And depending on the version, a 777 is between 300,000 and 370,000 empty.



Edited 1 time(s). Last edit at 04/21/2017 08:16PM by Racer X.
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