Structural Engineering: RE: timber pile brace connection

I've seen steel collars but if it's to secure diagonal forces you need a strut along the bottom (unless you deem the ground to act so) and the top (maybe the building does that part), and something to stop the collar from slipping up/down the pile - maybe a collar with interior studs or "teeth" to bite into the pile, you might need to use lag screws ...

Thor A. Tandy P.Eng, C.Eng, Struct.Eng, MIStructE
Victoria, BC
Canada

-----Original Message-----
From: IRV FRUCHTMAN [mailto:ifaeng@yahoo.com]
Sent: Tuesday, January 20, 2009 1:57 PM
To: seaint@seaint.org
Subject: timber pile brace connection

Dear Fellow Engineers
The contractor on a home renovation project wants to use concrete collars around existing timber piles at grade level to secure the pile's diagonal brace rods. (This is to avoid drilling holes thru the piles.) Has anyone seen such a concrete collar, or can suggest other pile connections for this application?
TIA,
Irv

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