Structural Engineering & Statics
where the load goes
Ladder

Hoop tension — the ladder

One essay so far against this idea. A ladder is the distinct arguments that stand against one idea, and this one has room to grow.
  1. NN2R = 0.60 m — the projected widthp = 1 MPap · 2R = 2N ⇒ N = pR = 300 kN/mno thickness in it, no second moment, no length

    The force that is only a radius

    Every internal force in this collection arrives with a lever arm attached. A hoop force does not. Cut a cylinder along a diameter and the free body settles it in one line — pressure times radius, with no thickness, no second moment and no length in it — which is why a tank wall is thin and why its worst hoop force is not at the bottom.

    rung 1 · internal-forces

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