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Trusses not over studs? AustinScoobee 07-10-2006
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Posted by AustinScoobee on July 10, 2006, 1:26 pm
Hi Evereyone,
We are looking a a little investment property which has a small
unfinished garage on it.
It is just studs on the inside, and we noticed, the studs are not under
the trusses!
It appears to be framed 16" on center but the trusses are set @24" on
center?
This way some trusses rest on the double top plate in the middle of the
studs?

It is framed 2X6 ,fully sheathed, with great ties to the slab, the
trusses are all tied to the top plate, etc .It all pretty much looks
great, it has had stucco exterior for 6 years and not to much as a
single crack..

I just wanted to know if this is acceptable design? The owner has the
original order from the truss company which actually indicated 24" on
center over 16"!! They have since closed up however!

So , is this normal and , should I fit in 2X6's under the errant
trusses?(Since the walls are still open)

Any help appreciated
G


Posted by Needing Advice on July 10, 2006, 1:38 pm
It is perfectly normal to have 24'' truss spacing with 16'' wall studs.



AustinScoobee wrote:
> Hi Evereyone,
> We are looking a a little investment property which has a small
> unfinished garage on it.
> It is just studs on the inside, and we noticed, the studs are not under
> the trusses!
> It appears to be framed 16" on center but the trusses are set @24" on
> center?
> This way some trusses rest on the double top plate in the middle of the
> studs?
>
> It is framed 2X6 ,fully sheathed, with great ties to the slab, the
> trusses are all tied to the top plate, etc .It all pretty much looks
> great, it has had stucco exterior for 6 years and not to much as a
> single crack..
>
> I just wanted to know if this is acceptable design? The owner has the
> original order from the truss company which actually indicated 24" on
> center over 16"!! They have since closed up however!
>
> So , is this normal and , should I fit in 2X6's under the errant
> trusses?(Since the walls are still open)
>
> Any help appreciated
> G


Posted by HerHusband on July 10, 2006, 2:16 pm
> It appears to be framed 16" on center but the trusses are set @24" on
> center? This way some trusses rest on the double top plate in the
> middle of the studs?

This is completely normal, and I framed my house the same way.

The double top plate basically acts like a header to transfer the load of a
truss that doesn't land over a stud to the nearest studs.

Works fine... No worries!

Anthony

Posted by on July 10, 2006, 3:20 pm
2x6 not 2x4 walls?

The load of the roof should be brought down to the footing
of the building by lining up studs from the trusses all the way
down the walls.

one person said that they put trusses on a double top plate

which means there are two 2x4s at the top of the wall
unfortunately two is the standard and to fix a problem
like miss aligned studs you need a three layer top plate


Now again this depends on loads like snow and wind

hopefully they did it right and the people that made the
trusses would have told them how it should be layed out

For you it means that you cant have an attic full of stuff
If you have access up to the attic you cant put heavy
loads up there like your AC unit or finnish it into a room.

that is the difference you offset the cost of 20 extra 2x4s
or 5 extra trusses to form an attic bonus room
durring the framing and endup losing the ability to put
a load in that area.

So just use it for a box or 2 of christmas decorations.
and dont build a floor and stick your air compressor
and a water heater up there.



www.yourepair.com








> Hi Evereyone,
> We are looking a a little investment property which has a small
> unfinished garage on it.
> It is just studs on the inside, and we noticed, the studs are not under
> the trusses!
> It appears to be framed 16" on center but the trusses are set @24" on
> center?
> This way some trusses rest on the double top plate in the middle of the
> studs?
>
> It is framed 2X6 ,fully sheathed, with great ties to the slab, the
> trusses are all tied to the top plate, etc .It all pretty much looks
> great, it has had stucco exterior for 6 years and not to much as a
> single crack..
>
> I just wanted to know if this is acceptable design? The owner has the
> original order from the truss company which actually indicated 24" on
> center over 16"!! They have since closed up however!
>
> So , is this normal and , should I fit in 2X6's under the errant
> trusses?(Since the walls are still open)
>
> Any help appreciated
> G
>



Posted by Wayne Whitney on July 10, 2006, 3:47 pm

> The load of the roof should be brought down to the footing of the
> building by lining up studs from the trusses all the way down the
> walls.
>
> one person said that they put trusses on a double top plate
>
> which means there are two 2x4s at the top of the wall unfortunately
> two is the standard and to fix a problem like miss aligned studs you
> need a three layer top plate

My understanding is that you are off by one here: if the studs/trusses
are perfectly aligned everywhere, I believe the building code allows a
single top plate (with the proper splice detail). Using a double top
plate is standard practice precisely because it allows the
studs/trusses to be offset.

Cheers, Wayne


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