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RE: Post Tensioned Masonry Walls

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4th edition was still based upon the 2002 MSJC where prestressed was still kind of the new fangled "thingie".  It has gotten more "robust" in the 2005, which the 5th edition is based upon.  And Drysdale's 2nd edition text is still based off of the 1999 MSJC (and 1997 UBC)...neither of which really dealt with prestressed masonry.  The 3rd edition will be based upon the 2005 MSJC (if I recall correctly) and I would assume might cover prestressed masonry a little more.
 
The end result is that it is still fairly new in the masonry world and not too many people use it...as such, there are not too many tools out there that I am aware of for prestressed masonry (although, in many ways, the basic principles are in line with prestress concrete...just as the basic principles of strength based masonry are rather similar to strength based reinforced concrete).
 
Regards,
 
Scott
Adrian, MI
-----Original Message-----
From: Joseph R. Grill [mailto:jrgrill(--nospam--at)cableone.net]
Sent: Thursday, May 08, 2008 2:11 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Post Tensioned Masonry Walls

Scott,

Thank you.  I have the 4th edition, but not much info.  I guess I will look into updating (when I have a little extra cash).  I’m also looking at in-plane loading design if anyone has any examples.

Thanks again,

Joe

 

From: Scott Maxwell [mailto:smaxwell(--nospam--at)umich.edu]
Sent: Thursday, May 08, 2008 10:50 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: Post Tensioned Masonry Walls

 

The best thing that I have at this time for prestressed masonry is the Masonry Designers' Guide 5th Edition.  It has a section on prestressed masonry including some examples.  You can get it from TMS (http://www.masonrysociety.org/mdg5/). 

 

I don't know if the next edition of Drysdale's textbook will have more prestressed masonry or not.  The 2nd edition is fairly limited.  The 3rd edition should be out sometime soon.  TMS was going through proofing/editting last Fall, but I have not seen the final version available yet.

 

Regards,

 

Scott

Adrian, MI

-----Original Message-----
From: Joseph R. Grill [mailto:jrgrill(--nospam--at)cableone.net]
Sent: Wednesday, May 07, 2008 8:41 PM
To: seaint(--nospam--at)seaint.org
Subject: Post Tensioned Masonry Walls

I am looking for texts, design examples etc. for post tensioned masonry walls.  I’m pretty much a “rookie” in this area, so I am looking for pretty much the basics and simple wall design examples and background.

 

I’m not doing any design at this point and may not depending on what I can find on the subject.  If I do get into the design on a project, the projects would be pretty simple in nature.

 

Do any of you have any suggestions for this kind of information?  I have done an internet search and can’t really find what I am looking for.  Maybe it doesn’t exist.

 

Thanks,

Joe Grill