Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gross weight load

  1. Jun 17, 2011 #1
    Dear native English speaking professionals!
    Would someone please advise on the term "gross weight load" - is it possible to use it for gravity force of a fully loaded railcar?

    I use it in the following context:

    "Estimated vertical force on one chord section is assumed to be equal to:
    q(v) = P(gr) : n
    where P(gr) is gross weight load;
    n is number of car dumper clamps; it is assumed that n = 8 (4 per side)."

    Is it OK to use this term here? Being no native English speaker, I'm not 100% sure...
     
    Last edited: Jun 17, 2011
  2. jcsd
  3. Jun 17, 2011 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi Altai! :smile:

    I'm not familiar with transport terminology :redface:, but I've always understood gross weight to include the load, and net weight to exclude the load …

    see http://en.wikipedia.org/wiki/Gross_weight#Measuring_weight"
    Gross weight is a term that generally is found in commerce or trade applications, and refers to the total weight of a product and its packaging. Conversely, net weight refers to the weight of the product alone, discounting the weight of its container or packaging; and tare weight is the weight of the packaging alone.​

    So the word "load" would be unnecessary (I think).
     
    Last edited by a moderator: Apr 26, 2017
  4. Jun 17, 2011 #3
    Thanks for your reply tiny-tim.
    I was also thinking about "gross weight force", but... again, I'm not so sure. Though what "P" stands for is really a force due to the weight of a fully loaded railcar - including the weight of the car itself (tare weight) and the weight of its contents (net weight).
     
  5. Jun 17, 2011 #4

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi Altai! :smile:

    Weight is a force.

    m is mass, and mg is weight.

    Of course, a lot of people say "weight" when they mean "mass" …

    who is this being written for?​
     
  6. Jun 17, 2011 #5
    It's for English-speaking railwaymen. I'm just translating some Russian material into English.
    So the "force" part is also excessive here? Oops.
     
  7. Jun 17, 2011 #6

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    mmm … I don't really understand why a railwayman would be interested in force :confused:

    what calculations do they need to make?

    Don't they simply want to know what the weight (the mass) is?
     
  8. Jun 17, 2011 #7
    Well, the material is about all kinds of loads and forces acting on a railcar, so why not?
     
  9. Jun 17, 2011 #8

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Tare weight = weight of the empty container or car
    Net weight = weight of the contents of the container or car
    Gross weight = total of Tare and Net weights

    These figures are displayed on the sides of shipping containers, for instance
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook