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Homework Help: Wall thickness s = da=12

  1. Aug 15, 2006 #1
    The rod shall be replaced by a tube (wall thickness s =
    da=12).if da is the outer diameter,then the inner diameter is it di=da-da/12 ??
     
  2. jcsd
  3. Aug 15, 2006 #2
    Be careful, recommended to draw the cross-section when evaluating the inner diameter for a clearer view.

    [tex]d_{i}=d_{a}-2(\frac{d_{a}}{12})=\frac{5}{6}d_{a}[/tex]
     
    Last edited: Aug 15, 2006
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