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  • Answer

    When creating a new cross-section in RFEM/RSTAB, there are various cross-section types available for selection in the "Parametric - Massive" category. If you stay with the mouse cursor on the button for a while, an information appears, indicating in which add‑on modules you can design this cross-section (see Figure 01).

    The cross-sections marked in green in Figure 01 can be designed with CONCRETE (RSTAB) and RF‑CONCRETE Members (RFEM). On the other hand, a "Pi‑section, type A," is not suitable for the design with CONCRETE or RF‑CONCRETE Members. As you can see in the info, the cross-section can be analyzed with RF‑TENDON. Therefore, you can select this cross-section for a member in RFEM and design it in the RF‑TENDON Design add‑on module.

    Why it is not possible to design all cross-sections in CONCRETE or RF‑CONCRETE Members?

    It is because of the reinforcement layers available for the individual cross-section types: for example, if you create and design a rectangular cross-section, you will find the corresponding reinforcement layer in Window 1.6 of CONCRETE, it means the possible reinforcement distribution (see Figure 02). There are various reinforcement layouts possible for a rectangular cross-section. These reinforcement layers are required to determine stresses and strains in the cross-section and thus the required reinforcement.

    For other cross-sections, such as Pi‑sections, this information is not available in the current state of development. Therefore, they cannot be designed with CONCRETE or RF‑CONCRETE Members.

    If the SHAPE‑MASSIVE program is licensed, you can create the structural system with a Pi‑section in RFEM/RSTAB and determine the governing internal forces. In SHAPE‑MASSIVE, it would then be possible to define the cross-section, to import the internal forces from RFEM/RSTAB and to design the cross-section according to the manual specification of longitudinal reinforcement.

    Further information about SHAPE‑MASSIVE can be found under the following link: https://www.dlubal.com/en-US/products/cross-section-properties-software/shape-massive

    SHAPE-MASSIVE allows you to freely define thick-walled cross-sections.

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First Steps

First steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

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