Can a load shift wreck you?

Discussion in 'Questions To Truckers From The General Public' started by nekom, Mar 26, 2010.

  1. nekom

    nekom Bobtail Member

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    Hey there, 4 wheeler here who just stumbled on these forums, figured it would be a good place to ask this. Little while back I noticed a tractor trailer overturned on I-79 southbound just south of Pittsburgh (not north where those big S turns are for anyone familiar with the area).

    Anyway it looked like the thing just literally fell over. It was on a relatively straight section of road, there wasn't any crosswind to speak of and there weren't any other vehicles involved. It was a typical box trailer. My theory is that perhaps an unexpected load shift threw the center of gravity off so bad that it did just literally fall over on its side. Can that actually happen? And if so would the cause certainly have to be poor loading or failing to secure topheavy items? I didn't see what was inside of the trailer.
     
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  3. jtrnr1951

    jtrnr1951 Road Train Member

    yessireee !!!!!!!!!!
     
  4. BIG RIGGER

    BIG RIGGER Road Train Member

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    It's happening somewhere as I type this...
     
  5. halfgear

    halfgear Light Load Member

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    most of the flipped over trucks i have seen in all this years were on straight 3 or 4 lanes higway.
    i think it has to do with loosing concentration or falling asleep.
     
  6. BIG RIGGER

    BIG RIGGER Road Train Member

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    Taking curves,corners,ramps has always wrecked drivers going too fast.
     
  7. Kittyfoot

    Kittyfoot Crusty Ancient

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    Yep, it can. As you said, sometimes because of load shifting, but more often from other causes. Loads shift for several reasons; loaded top heavy by shipper, improperly secured within the van trailer (rolls of newsprint are notorious for this), improper packaging.... the list goes on and on. Flatbed is a whole other discussion. Some cargos are inherently unstable like the liquid chemicals I haul, they always are moving and shifting weight front to rear and side to side.

    Now you know what the little yellow speed signs on exit/entrance ramps are for. They warn truckers about the safe speed in those curvy ramps. That's something you should think about the next time you or one of your friends decide to pass a big rig on a tight curve..... or cuss at him for going "so slow".
     
  8. nekom

    nekom Bobtail Member

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    I can definitely see that happening on a ramp but this was a pretty flat stretch of road. It looked like he was riding in the right lane and just literally fell over. Only thing I can figure is he had something heavy fall over and upset the balance enough to actually knock the whole truck on its side.
     
  9. BIG RIGGER

    BIG RIGGER Road Train Member

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    Those speed limits are for cars if a trucker is going the posted speed he is going way too fast.
     
  10. hotrod1653

    hotrod1653 Road Train Member

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    Hey Nekom.. Depending on what the driver was hauling, a load shift could have caused that. If they had a top heavy load (eg-large paper rolls, carpeting) that could have caused it if fell over. My guess is the driver fell asleep or had a top heavy load. Wind couldve played a factor, but it would take a good gust of it to do that. Hope i helped answer your question.
     
  11. rockee

    rockee Road Train Member

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    I have had three notable load shifts since I started. Two were in a curve in the road and one was on a left turn.
    (1) Picked up master rolls of TP in a sealed trailer, they put them on the wrong pallets and there was no bracing or strapping like there was supposed to be, after 25 miles or so, some got loose and fell over so when I went into a "S" curve in the road, my trailer started tipping and the chassis got all the way into the drive tire, luckily when I straightened out to keep it upright I was heading into the other part of the "S" but I had to hog part of the lane next to me and I dont think the folks in the car appreciated it.
    (2) Hauling brake drums from one plant location to another, stacked in old metal baskets, they put too many in some baskets and they collapsed then the springs broke lol, looked like I was hauling a drunk trailer when I pulled into the plant.
    (3) Bringing a sealed trailer to the plant full of axles in metal racks. Instead of loading them so the axles were facing front to back, they loaded them in sideways and as soon as I came around the corner, you could hear all this pop, pop, bang pop which was the axles coming out and hitting the wall of the trailer. The guys in the yard said they could see the top of the trailer when it leaned and they knew what was loaded in them when they heard all the noise.

    All three were pretty scary and I ended up with luck on my side
     
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