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RE: Hollow CMU anchors

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Mark Sorry about that.  I forwarded your question to one of my friends that works in the R & D department at Simpson.  Hopefully they have something for you.

 

Marlou Rodriguez, S.E.

MBRodriguez Engineering Inc.

2355 Oakland Road, Suite 14

San Jose, CA 95131

Tel: (408) 432-4866


From: Mark E. Deardorff [mailto:mdeardorff(--nospam--at)burkett-wong.com]
Sent: Monday, October 02, 2006 1:44 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Hollow CMU anchors

 

That report is for URM only. Not hollow unit masonry. The illustrations show solid material. The Hilti manual, when referencing the report even says, "URM only."

 

Mark E. Deardorff, Structural Engineer
Burkett & Wong
San Diego, CA

 

 


From: Marlou B. Rodriguez, S.E. [mailto:mbrodrig(--nospam--at)mbrodriguez.com]
Sent: Monday, October 02, 2006 1:37 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Hollow CMU anchors

Hilti HY 20 works for lateral loads per ER 4815.

 

Marlou Rodriguez, S.E.

MBRodriguez Engineering Inc.

2355 Oakland Road, Suite 14

San Jose, CA 95131

Tel: (408) 432-4866


From: Mark E. Deardorff [mailto:mdeardorff(--nospam--at)burkett-wong.com]
Sent: Monday, October 02, 2006 1:16 PM
To: seaint(--nospam--at)seaint.org
Subject: Hollow CMU anchors

 

We are providing braces to an existing CMU wall with skip grouting. We will need to provide anchors at grouted AND at ungrouted conditions. The bracing will occur in two stages. First, temporary bracing will be installed to be followed by permanent bracing. The only anchors that I can find that can be used in ungrouted cells like the Simpson epoxy tie anchor, are not available to resist seismic forces. The ICC Evaluation Report says only that they can be used to resist dead, live and wind loadings. The only thing I can find is the Titen screw that is only good for 200# tension. Way too low for our application.

 

Is anyone aware of an anchor product for use in an ungrouted CMU cell that can be used to resist seismic forces?

 

Thanks,

 

Mark E. Deardorff, Structural Engineer
Burkett & Wong
San Diego, CA