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 modeled is presented and how a traditional steel or wood diaphragm approach does not apply to a concrete membrane. Construction photographs and details will be shown to clarify the design intent.
Part 1:
Diaphragm Forces
Diaphragm Analysis – Different Approaches
Moment and Shear Diagrams
Diaphragm Design – Two Methods Used – Wood versus Concrete
“Wood” Design Example
Part 2:
Diaphragm Design – Concrete Method Example
Comparison between Different Methods
Use of Precompression in Diaphragm Design
Collectors and use of Omega Factor
Detailing
Chord Design
*Get 10% when you purchase both parts 1 and 2 of the recording
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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Speakers
Bryan Allred, S.E.
Duration
103 mins
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