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Maximilian Heindl, B.Eng.
2026-04-29

ETA-Based Manufacturer-Specific Values for Double-Headed Studs in Punching Shear Design

Can manufacturer-specific values according to ETA be taken into account in RFEM 6 for the punching shear verification with headed studs?

Answer:

For the punching shear verification with double-headed anchor studs as punching shear reinforcement, manufacturer-specific parameters in RFEM 6 can be taken into account in accordance with the respective ETA approvals based on EOTA TR 060 [1].

For example, the following manufacturers' systems with European Technical Assessment (ETA) are available:

Manufacturer Trade name of the construction product
ANCOTECH GmbH ancoPLUS punching shear reinforcement
Leviat GmbH HALFEN HDB dowel strip
JORDAHL GmbH JORDAHL punching shear reinforcement JDA
Peikko Group Oy PEIKKO PSB punching shear reinforcement
Schöck Bauteile GmbH Schöck Bole® punching shear reinforcement

For the punching shear verification of flat slabs, the resistance increase factor for punching shear is set by default to
kpu,sl = 1.96. If required, this value can be manually adjusted in the design configurations. (see image Tragfähigkeitskonfiguration für EOTA-Bemessung)

For the verification of slabs on grade or isolated foundations, the default preset factor kpu,fo = 1.50 can also be adjusted depending on the product system used or in accordance with individual design requirements. (see image Tragfähigkeitskonfiguration für EOTA-Bemessung)

The product-specific values for γs, β, and k1/k2 can also be adjusted individually.

Setting the load-bearing capacity configuration according to EOTA guidelines
Load-Bearing Capacity Configuration for EOTA Design
Author

Maximilian supports development in concrete structures and also works in customer support. He bridges the gap between development and user requirements.

References
  1. European Organisation for Technical Assessment: EOTA TR 060 – Design of fastenings for use in concrete under seismic action and reinforced concrete applications, Technical Report TR 060, Brussels.
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