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003404
2021-07-29

Causes of Small Lever Arms in Reinforcement Layers

In RF-CONCRETE Surfaces, I get a high amount of reinforcement in connection with a lever arm that is almost zero. How does such a small lever arm of internal forces come about?

Answer:

The situation could be caused by the following conditions:

  • The reinforcement layers are virtually adjacent to each other in the neutral axis of the surface.
  • You have selected a smaller rebar diameter.
  • The cross-section is completely drawn; that is, there is no neutral axis depth.

In this case, the smallest distance between the reinforcement layers is applied as a lever arm. If it is close to zero, the lever arm is also set as close to zero.

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Very Small Lever Arm
Very Small Lever Arm
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