mike20793 said:
I highly recommend the book "Post-Tensioned Concrete: Principles and Practice" by Dirk Bondy and Bryan Allred. Dirk's father, Ken, is one of the pioneers of PT design in North America and this is an incredible PT resource from basic concepts all the way to common field errors and practical detailing for constructability. You will be hard pressed to find a better reference for PT design. The chapter on flexure is very straight forward and does an excellent job explaining ultimate strength of indeterminate systems. I can probably scan a few pages and include them later if you're still having trouble, jplay.
If anyone ever gets a chance to view his PT class from UCLA, you will not be disappointed. His commentary on the confusing shear provisions in the code and secondary effects in indeterminate systems alone makes it worthwhile. His father, Ken, is a "Teacher's Assistant" so you get good info from people that have been doing it for over 60 years combined.
A few of my comments on the book:
1. Very USA-centric re design and practices.
2. No mention of deflections. Not one word. All member sizes in the examples are selected from L/D ratios and no follow up check on long-term deflections, nor any mention about cantilever deflections.
3. Whilst there are many example calculations, there is too much reference, in my opinion, to
PT Data, the authors software for designing PT floor systems.
4. Interesting that there are photos in the book of UCLA students doing line dancing! That is a first. I guess if TY Lin can author a Shakespeare parody in his 1963 book, a photo of line dancing is "acceptable" too.
5. The book is expensive - like US$150 for a paperback. But, full disclosure, I am a tight-arse and buy lots of $4 books at Thriftbooks.com
6. There are a good number of practical worked examples.
7. Great collection of photos from project sites - including the good, bad and the ugly (tendon ruptures, etc).
Time will tell re Ken's comments:
Ken Bondy's review from Amazon.com said:
...This book is destined to become the definitive work on the design of post-tensioned concrete buildings for many decades to come. Written by structural engineers who design post-tensioned concrete buildings for a living and teach how to design them at the university level, there has simply never been anything like this book...