FAQ 002412 EN

14 February 2019

Markus Baumgärtel Modeling | Structure RFEM

How can I model and design a split-level slab in RFEM?

Answer

Basically, there is the question whether the consideration of a split-level slab in the structural model is relevant or not.

If the split-level slab is to be taken into account for the determination of internal forces, it can be modelled as a surface model (folded plate structure, see Figure 01). There are two horizontal surfaces (ceilings) and one vertical surface (offset of height). The surfaces can then be designed in RF‑CONCRETE Surfaces.

Optionally, the internal forces in surfaces occurring in the split-level slab can also be integrated as member internal forces. For this, the member type of 'result beam' is recommended (see Figure 02). The internal forces of result beams can then be used for the design in RF‑CONCRETE Members (see Figure 03).

You can find more information about using result beams for the ceiling design in two technical articles of our Knowledge Base under Links below.

Keywords

split-level slab offset of height result beam rib offset

Reference

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RFEM 5.xx

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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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