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Thread: Trailer jack question

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    Default Trailer jack question

    I noticed in this picture that the dry van doesn't have a jack sitting under the front end and the other three do. Any reason for that?



    Thanks!
    -Mark

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    I believe this is for loading (relatively) heavy cargo. Think like 55 gallon drums of liquid 4 to a pallet. When you put in the first one, with the cargo plus the forklift, there's enough weight forward of the landing gear the trailer will tip forward.

    See https://www.ritehite.com/en/am/solut...dock-accidents
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    Leo Bicknell

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    OK, that makes sense. Nothing to do with the type of trailer - just what's going into it.

    Reason I ask is that I stuck jacks under all of my trailers (some dry van and some not) and wanted to make sure that I wasn't getting something fundamentally wrong (cuz I don't know jack, lol).

    Thanks,
    -Mark

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    Jack's a good guy Mark ... you should get to know him. He always "holds up" his end of the deal
    Cheers Tony

    "Knowing what to do is one thing ... being able to do it is another"
    "It is easy to criticize ... a lot harder when you have to justify it"

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    I heard he knows quite a lot because he's the..wait for it...Jack of all trades.

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    My we've become a joking bunch , a regular Jack and Jill show.
    As long as I can model in N-scale, I know I'm not old

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    Quote Originally Posted by bicknell View Post
    I believe this is for loading (relatively) heavy cargo. Think like 55 gallon drums of liquid 4 to a pallet. When you put in the first one, with the cargo plus the forklift, there's enough weight forward of the landing gear the trailer will tip forward.

    See https://www.ritehite.com/en/am/solut...dock-accidents

    For safety reasons, some companies require it for all trailers at the dock during loading and unloading without a tractor attached.
    - Gary R.

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    Pinnacle & Western Railroad

    Never under-do the over-kill.

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    Quote Originally Posted by Gary Rowan View Post
    For safety reasons, some companies require it for all trailers at the dock during loading and unloading without a tractor attached.
    Gary nailed it. The trailers with the safety jacks are being loaded/unloaded and to prevent tipping or "landing gear failure" when the forklift is near the nose they use the safety jack stands. The trailer without is likely not in processes of load/unload. Or an employee is not following procedure lol.
    Modeling Steel in N scale

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    Quote Originally Posted by Gary Rowan View Post
    For safety reasons, some companies require it for all trailers at the dock during loading and unloading without a tractor attached.
    It was interesting to me to see some of the other items in the safety link. While I've seen the kingpin jacks before I had not seen the hooks to lock the trailer to the dock, either for safety so it doesn't walk away, or security so someone doesn't drive off with it. I don't spend much time around warehouses though, just the occasional dock on a building I work in. Lots of modeling possibilities there.

    I can also see why some might make the jacks mandatory, like at a large fright forwarding warehouse. Never know what's in the truck, better safe than sorry. I suppose a smaller operation might know that was the trailer packed with bubble wrap and going to be unloaded with a pallet jack by hand and thus there's no risk.

    Another interesting modeling detail. Most warehouses will have concrete out 50' or so from the warehouse so the landing gear ends up on concrete. Too many cases of asphalt buckling under the load of the gear and it sinking in, like in the link I showed. Many companies require drivers to use the wood blocking under the landing gear on asphalt. So if you model a warehouse, either model concrete, or model blocking under your landing gear!
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    they are to hold the weight of fork lifts ect till loaded. they will tip over if not supported. those trailers are very short. ive had to go get some before when i was a driver

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