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RE: Wood beam repair

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Ray,
I can't see as this would be a problem since the area is in compression and you won't be exceeding the line of the neutral axis on the beam. The only problem I can think of is that termite infestation may not be obvious. You can take cores from near the area you want to replace and testing labs have used tapping techniques to determine changes in density of the materials. I think it you pull a couple cores within the replacement area and find them free of tunnels or infestation you would be okay to replace this section.
As for glue - this is one I am not sure about. The compression zone should be sufficient to maintain pressure (the more pressure closer to mid span unless a non-uniform load is used). There is a product called Gorilla Glue that is used in the making of musical instruments and is very good for changes in humidity. You might consider this or a standard builders yellow glue. Possibly others will have a wider choice on the use of adhesives but I would avoid epoxies only because you need time to adjust the filler piece without it first setting up.
 
Hope this helps you - but remember to investigate areas of the beam that might be subject to potential infestation that can not be seen and which is embedded within the beam and is not readily noticeable by deterioration at the face of the wood.
 
Regards,
Dennis
-----Original Message-----
From: Ray Shreenan [mailto:rshreenan(--nospam--at)earthlink.net]
Sent: Friday, September 26, 2003 10:46 AM
To: seaint(--nospam--at)seaint.org
Subject: Wood beam repair

Hi Folks:
 
Has anyone prepared a wood beam repair in the top of a simple span compression zone by removing a damaged area (termites) and adding a piece of wood with a tight fit?
I would like to use a piece of kiln dried wood to eliminate shrinkage problems as the floor beam is relatively old and seasoned.  The beam is a 4x12 about 12 long in span and lightly loaded as most of the floor framing adjacent is parallel to it. 
The damaged is about 6' long and 2 " deep and is centrally located on the span.  What glue product is best for this type of repair?
 
Also I did not receive mail from this list for the past month and most of September when I finally signed on again.  Was the list down or has anyone else had this problem?
 
Thanks in advance.
Ray shreenan  SE