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RE: Post-Tensioned CMU

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Hope you can give me more references for post-tensioned CMU. I'm from the Philippines and into Project Management. I am into value engineering services offering this to our clients.

Glo Cortez
From: "Adair, Joel" <JAdair(--nospam--at)>
Reply-To: seaint(--nospam--at)
To: "'seaint(--nospam--at)'" <seaint(--nospam--at)>
Subject: RE: Post-Tensioned CMU
Date: Wed, 21 Feb 2001 08:26:10 -0600

The requirements for prestressed masonry are covered in chapter 4 of the ACI
530-99 / ASCE 5-99 / TMS 402-99 masonry code.  Dur-o-Wall has a proprietary
system for prestressing masonry.  You can get info on the system at  I haven't used prestressed
masonry, but I recently attended a seminar by ACI and TMS, in which they
mentioned that the use of prestressed masonry is becoming more common.

Joel Adair, EIT
Halff Associates, Inc.
E-mail: jadair(--nospam--at)

-----Original Message-----
From: Mark Webster [mailto:markdwebster(--nospam--at)]
Sent: Wednesday, February 21, 2001 7:36 AM
To: seaint(--nospam--at)
Subject: Post-Tensioned CMU

Has anybody tried using post-tensioning strands instead of mild
reinforcement for CMU vertical reinforcement? Are there any proprietary
systems out there which use this approach? Is it necessary to grout the
cells if post-tensioning is used?

I'm trying to determine whether this is a viable option for CMU



Mark D. Webster
Simpson Gumpertz & Heger
297 Broadway
Arlington, MA  02474

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