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RE: Concrete Reinforcing Choices

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As noted, the ICBO report ER-5930 states that MMFX "must not be used in
seismic-resistant reinforced concrete members". Two questions:

1. Does anyone know why this limitation was put on this material? The web
site claims the ductility of the material is one of its benefits. 

2. For a concrete structure designed per the IBC, is there anywhere in the
US where at least a portion of the structure does not require "seismic
resistant reinforced concrete members"?  

William C. Sherman, PE
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)

-----Original Message-----
From: THunt(--nospam--at) [mailto:THunt(--nospam--at)]
Sent: Thursday, June 26, 2003 4:22 PM
To: seaint(--nospam--at)
Subject: Re: Concrete Reinforcing Choices

Interesting stuff but one problem (at least around here) is that it is not
allowed in seismic applications and is not weldable. 

Thomas Hunt, S.E. 
ABS Consulting 

06/26/2003 02:43 PM Please respond to

SubjectConcrete Reinforcing Choices

Someone recently asked about how to design with FRP materials.  If the issue
is corrosion, check out  Information on the web site and
in ICBO ER-5930 suggests design according to the UBC, ACI 318, and findings
in the Evaluation Report where a corrosion resistant alternative to ASTM
A615 Grade 75 is desired.  This design process may be more familiar to
practicing engineers, and field fabrication is possible.  There may be cost
benefits too.  I saw this material at the Structures Congress in Seattle,
and it looks promising.  Since my digest subscription to the list did not
come through last night, someone else may have suggested this already
without my seeing it.  
Jeff Wykoff

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