Contribution of Tendons to Longitudinal Reinforcement

Product Support
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1

Hello Dlubal Team,

First of all, I would like to thank you very much for your continuous support and for answering my questions.

I have a question regarding the contribution of prestressing tendons together with the longitudinal reinforcement in RFEM 6.

Can RFEM 6 calculate the contribution of the prestressing tendons in resisting the applied loads on a beam member? Based on the results I obtained, it appears that the tendon capacity is not contributing to resisting the applied loads, and that only the longitudinal reinforcement is being considered in the design results.

Could you please clarify whether the tendon contribution is automatically included in the analysis/design, or if there are additional settings or procedures required to activate it correctly?

Thank you very much for your support and assistance.

Best regards,
Amir Armia

3

Hello @amirarmia

Thank you for your question. Please refer to the details shared in my previous answer. Tendon members are not considered in the SLS/ULS within the Concrete Design AddOn in the actual stage of development.

The prestressing forces of the tendons, together with their arrangement, introduce internal forces into the system that help to withstand the loads acting on the main concrete member. However, at the current stage of development, they are not considered to be reinforcing steel for ULS/SLS checks.

I hope you find this information useful.