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Re: CMU rebar splice

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There were a more than one reason for these failures (one being some cells 
with rebars not grouted at all :)). I did not investigate the relevance of 
these failures to the splice lap length, but would assume that these were 
inadequate as well.

There was even a study (it is in the Northridge conference materials) 
correlating the direction and extent of CMU property wall failures with the 
 direction and strength of the seismic forces.

I also do remember inspecting a Kmart in Northridge when an aftershock 
happened and the roof and the CMU walls started falling down.  But this was 
 more of a cross-grain shear issue, I guess.


V. Steve Gordin PhD
Licensed Structural Engineer
SGE Consulting Structural Engineers
2081 Business Center Drive #105
Irvine CA 92612

On Oct 30, 2014, at 5:14 PM, "T. William (Bill) Allen, S.E." <Bill(--nospam--at)> 

> Steve -
> About those 6' tall CMU walls on the ground. Did they fail because the
> reinforcement broke their bond (due to inadequate lap) or was it more of 
> a global instability problem?
> T. William (Bill) Allen, S.E. (CA 2607)
> A L L E N   D E S I G N S
> Consulting Structural Engineers
> 33171 Paseo Cerveza, Suite 221
> San Juan Capistrano, CA 92675
> V (949) 248-8588 • C (949) 374-1536
> -----Original Message-----
> From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On
> Behalf Of Steve Gordin Sent: Thursday, October 30, 2014 4:11 PM
> To: seaint-seaosc(--nospam--at)
> Subject: Re: [SEAINT-SEAOSC] CMU rebar splice

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