Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Anchorage to Cobbled Foundation

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Larry,

Drilling into 100 year old foundation may damage the foundation.  This may
then damage the shear friction that it currently has with existing
structure.  If this a voluntary upgrade with no additional weight being
added to the structure, you may consider using Mr. Roselund's idea.  I have
not personally used his approach, but it seems pretty good.

My two cents

M

-----Original Message-----
From: lrhauer(--nospam--at)earthlink.net [mailto:lrhauer(--nospam--at)earthlink.net] 
Sent: Wednesday, April 19, 2006 9:48 AM
To: SEAOC
Subject: Anchorage to Cobbled Foundation

I am working on a project to anchor a 100 year old wood framed 2 story house
to the existing cobbled sandstone foundation, (there are no existing anchor
bolts- just a wood sill plate setting on top of the foundation with drypack
between). It is a voluntary upgrade, so does not have to conform to any code
requirements. The foundation is randomly laid sandstone cobbles with fairly
poor mortar quality after 100 years. My question is:

Does anyone have experience in what a reasonable value would be for epoxied
threaded rod anchors attaching the existing wood sill plate to the top of
the sandstone cobbles, (shear parallel with the footing)? Any additional
advice would be appreciated.

Thanks in advance.


Larry Hauer, S.E.



******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ******** 


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ********