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Re: shoring lagging remove or remain?

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That seems to be the very heart of the matter.  Is it termite bait or not?  Not having the ends of the lagging treated could be the deciding factor, as the center of the member may not have an adequate concentration of ACZA (or whatever treatment was used).
----- Original Message -----
From: chuckuc
Sent: Monday, December 17, 2001 1:06 PM
Subject: Re: shoring lagging remove or remain?

If we're talking about D.F. with .6 ACZA I wouldn't be inclined to characterize it as termite bait.
Chuck Utzman, P.E.

Conrad Guymon wrote:

I've seen the large amount of grief, reconstruction, ineffective treatment followed by more grief and reconstruction for an "unbaited" termite infestation at my Aunt's home.  So, I'm going to agree with Scott Haan on this one.  Leaving termite bait beneath a new structure regardless of the embedment depth doesn't seem prudent to me. That's my $0.02 worth Conrad Guymon, P.E.
----- Original Message -----
Sent: Saturday, December 15, 2001 12:04 PM
Subject: RE: shoring lagging remove or remain?
 97 UBC 2306 requires "structural" wood that is embedded the ground to be treated.  The UBC reasoning is to prevent the structure from being damaged. CABO 323 has methods of termite control for below grade "structural" wood.  I would think you could permeate the stuff with treatment or poison the soil next to building to prevent bugs from finding the wood inviting. If I was your building official [or designer] and there was a local termite or carpenter ant problem, there is no way on God's green earth that I would let a contractor save some money by leaving a little food cache for a termite colony next to someones house, old folks home or kindergarten.  I will stop here before I start to get sarcastic. Scott M Haan P.E.
Plan Review Engineer
Building Safety Division
Development Services Department
Municipality of Anchorage
-----Original Message-----
From: Jeff Smith [mailto:smthengr(--nospam--at)]
Sent: Saturday, December 15, 2001 9:41 AM
To: seaint(--nospam--at)
Subject: shoring lagging remove or remain?
I thought I sent this before, but can't find any record of it being posted. This is a new version of the same question, pardon the duplication.A building official is looking into having our wood lagging removed before we backfill for pest infestation reasons. The shoring wall is 2'-6" in front of our permanent concrete retaining wall and  building envelope above (wood framed residence). The earth shoring wall is at least 16' tall with pressure treated lagging, not treated at the cut ends. I could see removing the top 3-5 feet. I could not find anything in the code specific to this?