Matching wall and truss spacing...

[bob64]

Hello all:

I would like to use 2x6 walls 16" o.c. w/ double top plate for a backyard workshop/office I am constructing. The truss package I have received from the local manufacturer has the attic trusses spaced at 24" o.c.

Is this combination of 24" trusses and 16" studs something that is done often? There are a total of 4 "girder trusses" for the dormers used on the building. I know it would be best to have every truss with a stud below it. Nonetheless, it seems the 2x6 wall would be sufficient to support this regardless. Any input on this would be very helpful!

I am hesistant to use 24" spacing for the studs because I would like an overall open space on the first floor and that just doesn't seem like it would be very stable for a 30' x 30' footprint.

So basically, am I ok sticking with my mismatched combination of 24" trusses and 16" studs? Or should I just go ahead and use 24" o.c. for the 2x6 walls even though we are talking about a open space with no interior shear walls etc?

Thanks very much for any assistance!!

 

[RDK]

Wall studs at 16” o/c with a double top plate aand roof trusses 24 “ o/c is a common construction method for residential and other small building wood frame construction.

Rick Kitson MBA P.Eng

Construction Project Management
From conception to completion

http://www.kitsonengineering.com

 

[boo1]

Always place a stud under the girders.

 

[Trussdoc]

If you are using 2x6 studs on this building, which I assume is a single story structure, each stud has a capacity of at least 5000 pounds axial load, or more depending on the grade and species. Placing the studs at 24" on center would allow a total uniform load of about 5000 / 2 x (24/12) / 30 or 166 PSF, which should be acceptable in all but the heaviest snow regions.

 

[bob64]

So you guys think it would be ok to go ahead and use 2x6 studs at 24" o.c. (with studs under the girder trusses)?

I just feel hesistant because of the "openness" of the ground level being 30x30'. I am assuming structural grade OSB and tight nailing would be sufficient then for those walls.

thanks again

 

[boo1]

Umm, yes 24" oc is ok.
But why are u sold on 2x6"?
Where are u located?

 

[bob64]

Boo1:

I am in coastal south Texas. I thought 2x6 would be good because these are attic trusses for my upstairs office, two of the walls are going to be bearing all of the "upstairs" weight.

The upstairs room area is about 13'x30'

The two gable end trusses are also load bearing so there really isnt much load on the other two walls.

Another concern is having solid exterior walls since there arent any interior shear walls on that ground floor. Plus we are in a potential high-wind area! If 2x6's 24 oc can provide enough stiffness for all of this then i'm all for it.

thanks

 

[boo1]

I see, i would consider using the 2x6 - 24" oc. Matching the stud spacing to the trusses. Always place a stud under the girders. Wall sheathing 1/2" nailed 4" oc with #8 on peremeter 12" in field, roof 6" on peremeter. Connection between the trusses and foundation needed. Your state insurance boby has a web site with a guide or use the SSTD 10-99 giude.