1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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