What is the meaning of a "main load" and "secondary load" in RF‑PUNCH Pro and where does this load come from?


In RF‑PUNCH Pro, a primary and secondary load is determined when introducing a compression and tensile force at a point of punching shear (for example, a column). For example, this may be the case when calculating a result combination (RC) that results from a previous dynamic analysis with RF‑/DYNAM Pro.

In this case, the tensile and compressive forces may occur at the connection of a column to a slab. The add-on module analyzes both "punching directions" individually and displays them as "primary load" and "secondary load."


Secondary load Primary load Punch Punching shear


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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

Price of First License
3,540.00 USD
RFEM Concrete Structures
RF-PUNCH Pro 5.xx

Add-on Module

Punching shear design of foundations and slabs with nodal and line supports

Price of First License
760.00 USD