Hi,
I wanted to enquire about the default settings for a seismic C2 anchor design check on PROFIS. I believe the design method should be EN 1992 as it seems to supersede ETAG. However, a bit unsure about seismic displacement type setting. Default settings choose EN1992-4. Are you able to provide an explanation to the difference in those options and what an engineer should consider when designing seismic anchors?
Hi Sundar,
Thanks for reaching out.
Yes, you are correct about using EN1992-4:2018 for anchor design as it has superseded EOTA TR045 and our recommendation is the same, use EN1992-4.
For seismic displacement, the ETA option gives you a product-specific Displacement Damage Limitation State (DLS). These values are derived based on testing done as per the standards. The EN1992-4 option on the other hand, provides a generic DLS value stated in the Eurocode, which is acceptable for most cases. It typically considers the DLS to be in the range of 0.3mm. You can find more details in EN1992-4 Cl.6 (1) under the note.
Regarding which type of seismic displacement to use for your scenario, you can use either option as both provide a safe value. When using ETA, you get precise values that are product-specific and yield accurate results.
If you need further assistance or have more questions, feel free to ask.
Best regards,
Suman