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Re: Truss gap over the wall [truss skroo-ups]

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--- bcainse(--nospam--at) wrote:

> Ralph-
> Yes, in my opinion he was lucky to have called an
> Engineer. But his perception will depend on how much
> the fix will cost.  If it involves a bunch of
> "hidden" stuff (like beams instead of pretty finish
> work), he'll probably think he shouldn't have called
> an Engineer! And unfortunately, the Contractor will
> try to convince him that whatever fix is proposed is
> overkill.   
> Bill Cain, S.E.
> Berkeley CA
> -----Original Message-----
> From: Rhkratzse(--nospam--at)
> To: AChance(--nospam--at); seaint(--nospam--at)
> Sent: Mon, 6 Mar 2006 18:54:16 EST
> Subject: Re: Truss gap over the wall [truss
> skroo-ups]
> Speaking of truss skroo-ups, I recently saw a house
> where quite a few roof trusses spanning about 25'
> were supported at a girder truss WITH TOE NAILS, and
> nothing else!  I could barely believe it, but there
> it was.  They had obviously been supported for 20+
> years by the two interior "non-load-bearing" hall
> walls near midspan that didn't even align with panel
> points.  The owner was planned to remove the hall
> walls--was he lucky he called an engineer? 
> Ralph
> In a message dated 3/6/06 3:37:14 PM,
> AChance(--nospam--at) writes:
> Thanks to Christopher, John, Jason, Ray, Rodger and
> Harold.  I believe the Simpson Clips with the DS
> gypsum wallboard supports will work.  I sure hope
> the thousands of homes like mine which have the
> interior walls nailed to the bottom truss chords do
> not fall down any time soon.  It is not good to have
> been a carpenter before being an engineer.
> Thanks again
> Acie Chance
> -----Original Message-----
> From: Raymond Shreenan
> [mailto:rshreenan(--nospam--at)]
> Sent: Monday, March 06, 2006 3:15 PM
> To: seaint(--nospam--at)
> Subject: Truss gap over the wall
> Acie:
> One of the reasons not to allow the truss to bear on
> the interior wall is that it was most likely
> designed to clear span from exterior wall to
> exterior wall or girder truss.  If you give it
> bearing interior it causes stress reversals and
> changes in the loads to the members which may be
> greater than the original dedign results.  At the
> same time the wall has to be supported at the top. 
> The Simpson truss clips are slotted to allow
> vertical deflection of the truss without loading the
> wall and provides lateral support of the wall
> perpendicular to the truss.  
> Ray Shreenan SE

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