Subject: Re: T-headed termination of column reinforcement
Date: Fri, 11 Jun 1999 21:51:03 EDT
In a message dated 6/11/99 6:10:11 AM EST, chamilto(--nospam--at)eng.uci.edu writes:
<< All -
Does anybody know of a reference for design of T-headed column
longitudinal reinforcing bar terminations? That is, how would you calc
terminator "plate" diameter and other relevant parameters? I am
particularly interested in a bridge spec reference, but a building spec
will be a good start just to see if it's a feasible alternative. (I
don't have a complete copy of the Caltrans BDS and I'm trying to figure
out what I would need if there even *is* a spec there.) A reference is
preferred to an equation, but an equation is also welcome. ;-)
Also, if you have any names of suppliers that I might contact, those
would also be appreciated. Private email or list reply okay.
Charles Hamilton, EIT Graduate Student Researcher
Department of Civil and Phone: 949.824.8694
Environmental Engineering FAX: 949.824.2117
University of California, Irvine Email: chamilto(--nospam--at)eng.uci.edu
Erico provides a threaded end plate called the "terminator." Historically, a
coupler was welded to a flat plat and then screwed on to the end of the
rebar. Erico realized they could buy a pieces of round bar stock (1-3/8"
diameter for #4 rebar terminator to 4-1/2" diameter for #18 rebar terminator)
and cut it into multiple pieces the same length as there standard couplers,
or slightly shorter, and just drill and thread a hole in the center of the
plate. Other companies (Barsplice) sell couplers with welded end plates.
I have used the terminator plates in the past and they have been easy to use.
The only complaint is by the rebar fabricators because they don't like to
thread rebar, most shops have to farm the work out to larger shops which have
the threading equipment.
You can contact Erico at (800)248-2677 (Solon, Ohio). I don't know if they
have a new sales rep in California yet.
Hope this helps,