Structural Engineering & Statics
where the load goes
Ladder

Composite action — 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. loose: two beams, and the faces slide16.2 mmbonded: one beam, and the faces cannot4.0 mmI × 4with connectors at k = 200: 5.4 mm, 89% composite

    Two beams, or one beam four times as stiff

    Stack two planks and they bend as two beams whose faces slide past one another. Bond the faces and the pair has one neutral axis, four times the second moment and half the stress. Nothing was added but a restraint on slip.

    rung 1 · internal-forces

All ladders