Part 1: Design of Post-Tensioned Diaphragms

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The webinar covers the design of post-tensioned diaphragms highlighting the benefits of precompression to reduce or eliminate additional drag and chord reinforcement. A discussion of how concrete diaphragms should be model are presented and how a traditional steel or wood diaphragm approach does not apply to a concrete membrane. Construction photographs and details are shown to clarify the design intent.

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Description: Extra DVD with PDF handout
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Instant Video with PDF handout
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Youtube Description
Speakers Bryan Allred, S.E.
Duration 109
Speaker Bios

Bryan Allred, S.E. is a licensed structural engineer who specializes in the design of reinforced concrete buildings utilizing post-tensioned floor systems. He is the co-author of the book “Post-Tensioned Concrete Principles and Practice” which covers the design of post-tensioned concrete structures from basic fundamentals to specific construction detailing. Bryan is a fellow of the Post-Tensioning Institute (PTI), a member of their Building Design Committee and has given numerous PTI educational seminars across the country highlighting the use and benefits of post-tensioning.

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