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!

Mechanical properties of solid

  1. Oct 8, 2008 #1
    why are pillars and columns and railway lines 'I-shaped'? how is buckling prevented? howis the weight distributed?
  2. jcsd
  3. Oct 8, 2008 #2
    most of the strength of a beam comes from the top and bottom parts.
  4. Oct 8, 2008 #3


    User Avatar

    Staff: Mentor

    Stiffness is a function of moment of inertia: http://en.wikipedia.org/wiki/Moment_of_inertia

    Using the concept properly enables saving on materials (saving weight and money) while maximizing strength.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Mechanical properties of solid
  1. Liquid To solid (Replies: 10)

  2. Atoms in a solid (Replies: 4)