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Thread: Freight Car Nomenclature ?

  1. #1
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    Default Freight Car Nomenclature ?

    Hi Folks,

    Re: Transition Era

    I'm trying to build a freight car - the source has these dimensions listed on the side (in addition to the standard interior dimensions) - what exactly are these two lines telling me ?

    •Ex W 10-2 H 11-3

    •E W 9-5 H 12-3


    Thanks...

    Regards,
    Scott

  2. #2

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    The first line is exterior width and height. Looks about right.
    Not sure the second. Perhaps width and height at the eves?
    Christopher

  3. #3
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    Quote Originally Posted by conductorchris View Post
    The first line is exterior width and height. Looks about right.
    Not sure the second. Perhaps width and height at the eves?
    Christopher
    Hi Christopher,

    As always - thanks for your interest and help...

    Yeah - that's kind of what I thought too - but there is no roof overhang on these cars or most freight cars for that matter... I figured the two heights were the peak of the roof and where the roof meets the car sides - - - but two widths ?

    This is for those darn 40 foot steel reefers - I made the box 12-3 H x 10-2 W - - - and it seems awfully short and wide to me... That's just the peak of the box - the running boards are above that and not included in the 12-3... This is using the Atlas O Scale 40 Foot Steel Reefer as a reference... I'd assume the nomenclature is probably correct - no ?

    Regards,
    Scott

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    From the looks of the numbers E=Enterior.
    These numbers would be important in figuring out what will fit in the car.

    Randy

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    Quote Originally Posted by rdayt View Post
    From the looks of the numbers E=Enterior.
    These numbers would be important in figuring out what will fit in the car.

    Randy
    Hi Randy,

    Thanks for your help as well...

    What I left off - in addition to the two lines above - there were three more lines on the side of the car - adjacent to them:

    IL
    IH
    IW

    I figured they were the interior dimensions ?

    It's odd - the narrowest width has the tallest height ?

    Maybe I should just knock the box width down to 9-5 and be done with it ?

    Regards,
    Scott

  6. #6
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    Hi Scott,

    This might help you out, it's a page out of the 1980 Official Railway Equipment Register that lists every piece of rolling stock in Canada and the United States that is in interchange service.

    FJ&G 1980 FreightCarRoster.jpg

    On the side of a car you will find:

    CAPY: Capacity
    LD LMT: the load limit which is just a bit larger then the Capacity.
    LT WT: The empty weight of the car.
    CU FT: Cubic feet of the interior of the car.

    These are usually under the reporting marks on the left side of the car.

    On the right side you will find the dimensional data:

    IL: Interior Length.
    IW: Interior Width.
    IH: Interior Height
    L: Exterior Length (over the striker plates but that's really the ends of the frame where the couplers stick out).
    W: Width of the exterior of the car, to the outside of the carbody or posts.
    ExW: Extreme Width, to usually any grab irons that stick out further then the with of the carbody.
    H: Exterior Height, to the top of the roof.
    ExH: Extreme Height, to the top of any roofwalk, hatch, or remaining roofwalk supports that are above the top of the roof.

    Paul :-)

  7. #7
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    Hi Scott,

    This might help you out, it's a page out of the 1980 Official Railway Equipment Register that lists every piece of rolling stock in Canada and the United States that is in interchange service.



    On the side of a car you will find:

    CAPY: Capacity
    LD LMT: the load limit which is just a bit larger then the Capacity.
    LT WT: The empty weight of the car.
    CU FT: Cubic feet of the interior of the car.

    These are usually under the reporting marks on the left side of the car.

    On the right side you will find the dimensional data:

    IL: Interior Length.
    IW: Interior Width.
    IH: Interior Height
    L: Exterior Length (over the striker plates but that's really the ends of the frame where the couplers stick out).
    W: Width of the exterior of the car, to the outside of the carbody or posts.
    ExW: Extreme Width, to usually any grab irons that stick out further then the with of the carbody.
    H: Exterior Height, to the top of the roof.
    ExH: Extreme Height, to the top of any roofwalk, hatch, or remaining roofwalk supports that are above the top of the roof.

    Paul :-)

  8. #8
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    Hi Paul,

    Thank you so much - awesome...

    So now I'm convinced - did the model maker mess up ? Here's the reference numbers off the Atlas cars... It doesn't jive with what we now know - right ? If the top line is EX - it should be 12-6 in height above rails ?

    My actual box should be 9-5 x 11-5 according to this nomenclature...

    Regards,

    Scott
    Attached Images Attached Images
    Last edited by scottb613; 03-07-2019 at 12:42 PM.

  9. #9
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    Quote Originally Posted by charland View Post
    Hi Scott,

    Paul :-)
    Forgot the quote...

  10. #10
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    Is this for an old wooden or early steel boxcar Scott? The W and EW make me think it's insulated or a car wit exterior posts.

    The H is for the interior, the ExH is from the railhead, so it looks like they have the EH and ExH switched.

    The interior of your box appears to be 7 - 3 high, 33 - 2 1/4 long and 8 - 3 wide. You need to add whatever wall thickness there is to that.

    Paul :-)

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