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RE: Cost Effective Mechanical Lap Splice?

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I like the Erico's, but you have to be careful with the Dayton's.  The last I knew, if you required a #5, you had to splice with a #6 because the Dayton threading reduced the cross sectional area of the bar.  The Lenton's use a tapered thread that would develop the full strength of the bar. 
Correct me if this is not accurate today.  It has been a while since I used a Dayton splice.

Regards, Harold Sprague

Subject: RE: Cost Effective Mechanical Lap Splice?
Date: Wed, 3 Dec 2008 11:54:19 -0800
From: PFeather(--nospam--at)
To: seaint(--nospam--at)

Dayton Superior Bar-Lock or Erico Lenton Lock couplers
Paul Feather PE, SE

From: Paul Blomberg [mailto:paul.blomberg(--nospam--at)]
Sent: Wednesday, December 03, 2008 11:36 AM
To: seaint(--nospam--at)
Subject: Re: Cost Effective Mechanical Lap Splice?

If the lap splice length isn't there, perhaps you could go with a mechanical rebar coupler.  If the splice length is close to what is needed, try a higher strength concrete mix and see if the shorter splice length works.

On 12/3/08, Bill Allen <t.w.allen(--nospam--at)> wrote:
I'm working on a project where the contractor has installed too short of a dowel coming out of a footing for a retaining wall. I've considered excess reinforcement, but the required lap is still more than what I have.
What is the most cost effective lap splice?
T. William (Bill) Allen, S.E.
Consulting Structural Engineers
V (949) 248-8588 F(949) 209-2509

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