Gerard,
Simpson makes a Titen HD Rod Coupler that seems to meet your needs. They don’t have a separate ICC-ES listing from the regular Titen HD, so it would probably be a good idea to contact Simpson to see if they’re covered.
http://www.simpsonanchors.com/catalog/mechanical/titen-hd/rod_coupler.html
Brian
From: Gerard Madden, SE [mailto:gmse4603@gmail.com]
Sent: Wednesday, March 11, 2009 12:28 PM
To: seaint@seaint.org
Subject: Post-Installed Threaded Insert
Anyone out there know of a post-installed concrete insert that has internal threads that would allow for an all-thread rod to be threaded in?
Similar to a ferrule or burke insert only it's drilled in to existing concrete?
TIA,
-gm