Punching shear of RC slabs exposed to fire: assessment of load-bearing capacity based on European and American provisions. Part 1 – General code requirements

Authors

DOI:

https://doi.org/10.24425/ace.2025.156154

Abstract

Slab-column connection is one of the most critical points in reinforced concrete structures. Punching shear capacity of this connection must be properly determined in both the persistent design situation and the accidental design situation of fire. European and American codes give simplified (tabulated) requirements for minimal slab thickness and minimal column cross-section width in accordance with the required fire resistance. In many cases, a more accurate prediction of fire resistance might be needed. It can be achieved when the ultimate limit states of a structure are checked in the case of fire conditions. This paper shows the comparison between European and American code requirements for punching shear capacity as the base for further calculations of flat RC slabs subjected to fire. The second part is going to present European and American requirements for determining the effects of loads relevant to the consideration of an accidental design situation of fire and comparing these effects with the punching shear capacity of the slab-column connection, which decreases with fire duration.

References

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Published

2025-12-30

How to Cite

Kowalski, Robert, et al. “Punching Shear of RC Slabs Exposed to Fire: Assessment of Load-Bearing Capacity Based on European and American Provisions. Part 1 – General Code Requirements”. Archives of Civil Engineering, vol. 71, no. 4, Dec. 2025, pp. 31-41, doi:10.24425/ace.2025.156154.

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