Standoffs [RE-wrenches]

[David Brearley]

Max,

This really is a perfect job to work with an engineer on.  It usually costs
us $500 - $600 to do the math something like this and get a PE's
certification.  This is cheap insurance when you think about it.  It
probably isn't a huge percentage increase in the cost to your customer.

My first thought was the same as Kirpal's.  We have had no problem getting
engineering approval for DP&W's "EZ" Feet on 1/2 inch plywood.  We have even
been able to use this on SIPS that used OSB sheathing after completing pull
out tests on site.  We have no snow loading issues here in Austin and modest
design-to wind speeds, at least one of which applies in Palm Springs.  The
one thing we don't have are seismic considerations.  I'm not sure how this
will change the engineer's calculations.  It is worth looking into.

As a one-time carpenter myself, I do like Allan's idea.  If the SIPS panel
has something more structural, you can put this to good use.  If this is new
construction, you may even be able to special order SIPS w/ a 2 x 4 on the
seam.  

Here is one other piece of hardware that might be useful:
http://www.us.hilti.com/holus/modules/prcat/prca_navigation.jsp?OID=-15674  

Worst case scenario, I suppose you come up with a through-bolt detail.  This
may not be an option if your client has exposed/vaulted ceilings.  

Please let us know how you solve this.  We'll all see more roofs like this
in the future.

Best regards,

David C. Brearley
VP of Design
NABCEP Certified Solar Installer 
 
Meridian Energy Systems, Inc. (TECL: 24461)
2300 S. Lamar Blvd., Ste. 107
Austin, Texas 78704
P: 512-448-0055
F: 512-448-0045
david at meridiansolar.com
www.meridiansolar.com
 
 
-----Original Message-----
From: max balchowsky [mailto:max at seesolar.com] 
Sent: Wednesday, February 06, 2008 6:00 PM
To: RE-wrenches at topica.com
Subject: RE: Standoffs [RE-wrenches]



Has anybody put a system on top of a sips roof? we're looking at a custom
homein Palm Springs with sips panels - 10" of foam with 1/2" of plywood on
top...
   
  Max Balchowsky
  SEE Systems
100 S. Sunrise wy #285
  Palm Springs, Ca. 92262
  760-403-6810
  
August Goers <august at luminalt.com> wrote:
  
Unirac makes custom steel standoffs up to 12" tall. See part number 310043.

http://unirac.com/solarmount/sm_pdf/sm_price.pdf


-August

August Goers

Luminalt Energy Corporation
Office: (415) 564-7652
Mobile: (415) 559-1525
www.luminalt.com
august at luminalt.com

-----Original Message-----
From: Jeremy Rodriguez [mailto:allsolar at scswifi.net] 
Sent: Tuesday, February 05, 2008 10:10 AM
To: RE-Wrenches
Subject: Standoffs [RE-wrenches]



Any one know of a 9" standoff?

Thanks

All Solar Inc.
Jeremy and Amy Rodriguez
1463 M St
Penrose, CO 81240
Phone 719-372-3808
Fax 719-372-3804
Email allsolar at scswifi.net
[Non-text portions of this message have been removed]


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