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

In RFEM 6, can manufacturer-specific values according to the ETA be taken into account during punching shear design with double-headed studs?

Answer:

When performing punching shear design with double-headed studs as punching reinforcement, RFEM 6 allows you to account for manufacturer-specific parameters according to the respective ETA approvals based on EOTA TR 060 [1].

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

Manufacturer	Construction Product Trade Name
ANCOTECH GmbH	ancoPLUS punching reinforcement
Leviat GmbH	HALFEN HDB shear rail
JORDAHL GmbH	JORDAHL JDA punching reinforcement
Peikko Group Oy	PEIKKO PSB punching reinforcement
Schöck Bauteile GmbH	Schöck Bole® punching reinforcement

For the punching shear design of flat slabs, the increase factor for the punching shear resistance is set by default to
k_pu,sl = 1.96. This value can be manually adjusted in the ultimate configurations, if necessary. (see the image Ultimate configuration for EOTA design)

For the design of foundation slabs or single foundations, the default factor k_pu,fo = 1.50 can also be adjusted depending on the product system used or in accordance with individual design requirements.

(see the image Ultimate Configuration for EOTA Design)

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

Setting the ultimate configuration according to EOTA guidelines

Ultimate 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

European Organisation for Technical Assessment: EOTA TR 060 – Design of Fasteners for Use in Concrete Subject to Seismic Loads and in Reinforced Concrete Applications, Technical Report TR 060, Brussels.

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