In RF-CONCRETE Surfaces, I get a high amount of reinforcement in relation to a lever arm that is almost zero. How is such a small lever arm of internal forces created?

Answer

The situation can be caused by the following conditions:

  • Reinforcement layers are virtually adjacent to each other in the centroidal axis of the surface
  • A smaller rebar diameter has been selected
  • The cross-section is completely drawn, which means that 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 applied close to zero.

Keywords

Lever arm Interior Force Concrete cover Reinforcement layer

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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RFEM Concrete Structures
RF-CONCRETE 5.xx

Add-on Module

Design of reinforced concrete members and surfaces (plates, walls, planar structures, shells)

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