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RE: Top plate splices

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I say "it depends".

If the chord force is such that one 2X is good enough, then ensuring
continuity by splicing only one 2X (either one) should be O.K. However, it's
usually economical to use the other top plate to provide the splice by
specifying a certain quantity of nails on either side of the splice so that
the chord force can be transferred to the other 2x.

If the chord force is such that you need both 2Xs, then you must splice
either one of them with a strap for half the load or both of them with
either a side splice or a bolted plate (MST type) through the face of the
plate. If you used a side splice, then I would probably agree it would be
best to use a strap on both sides (inside and outside) to keep the load
concentric.

T. William (Bill) Allen, S.E. (CA #2607)	
ALLEN DESIGNS	
Consulting Structural Engineers	
http://www.AllenDesigns.com	
V (949) 248-8588	 .	 F (949) 209-2509	

-----Original Message-----
From: Gary Grinstead [mailto:Gary.Grinstead(--nospam--at)ci.stockton.ca.us] 
Sent: Wednesday, April 13, 2005 4:00 PM
To: seaint(--nospam--at)seaint.org
Subject: Top plate splices

I'm requesting people's opinion on the location of top plate
collector/drag splices.

I always detailed my splice straps on top of the upper plate.  Mainly
because that's how my old-school boss detailed his splices.  If for any
reason they could not be on top, we always placed a strap on each side
of the top plate to keep a concentric condition.  As long as the strap
wasn't unusually thick, I never got much flack from the contractor.

Now that I'm working as a plancheck engineer, I see a lot of splice
straps on only one side of the top plates.  When I raise a question
about the eccentricity, I'll ofter receive the respons that "this is an
industry standard and therefore doesn't need to be changed".

I'd like to hear your thoughts on this, and if you detail single-sided
splices, why you don't feel this is a concern.

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