For further knowledge on utilizing secondary moments in the design of post-tensioned concrete one can read a recent technical article in the PTI Journal by Jonathan Hirsch, Software Development Manager at Bentley Systems.
Initially, understanding the meaning and usage of secondary moments is a fundamental aspect of designing post-tensioned concrete and is considered a rite of passage for engineers in this field. There is an abundance of information available on how to calculate and apply secondary moments. However, many engineers use a traditional approach to design post-tensioned members, which is code-compliant, accurate and safe. This article aims to provide a comprehensive understanding of the origin, effectiveness, and limitations of this approach emphasizing on alternative approaches for designing post-tensioned members.
The introduction section establishes the use of secondary effects in post-tensioning. The subsequent sections cover several aspects, including the following six. A short description is presented and the respective section titles are acknowledged:
Here is the link for access to the PTI Journal article courtesy of Post-Tensioning Institute.
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