Gable Truss Question

[poolplayer1]

Hello everyone.
My name is Mando and just retired from my regular job and have decided to build my own single car garage. Two things that I have always enjoyed doing besides my trade was auto mechanics and carpentry.Thats why I decided to tackle the job myself,especially since I have the time now.
This is what I have. First of all,I am in Arizona in case some of you are in my neighborhood.My garage is 14x24. Yesterday,I put up all my Prefab trusses.
They have a 4/12 pitch.I will be having a 16" overhang at the eves.
This is my question? How do I add a overhang at both gable end trusses so that I have weather protection all the way around,eves and rakes.
Also,As it is right now with my roof being 14x24,I can set all the plywood to fall into my 24" OC trusses.In other words,I would not have to do too much cutting other than the half sheets of plywood to stagger them.
If I add,say another 16" to the gable ends,isn't that going to throw off my full/half sheets of plywood.Here is where I am lost.
Keep in mind that I am not a carpenter by any means other than a DIY guy.
I like challenges and this is one of them.Sorry for the long post.
Nice to meet one and all of you here and Thanks for your help.
Mando

 

[Stuart in MN]

This picture shows the two ways to do it:

If you were starting over, you'd use the method on the upper left. The end gable truss would be built so it's lower than the rest of the trusses, and then the outlookers sit on top of it. Since you already have your trusses up, use the method on the lower right - basically, you build a ladder shaped structure and lag bolt it to the end of the gable truss. My garage was built this way and it's held up fine for nearly 20 years now.

 

[JCQuick]

heres how we did it on my build I have vaulted ceiling but you get the idea

 

[MagKarl]

The term you want to search for is "outlooker".

 

[Kevin54]

Poolplayer....Welcome to Garage Journal. If you would, could you put at least your State in your profile as it actually does help to have questions answered once in a while. Maybe not this one, but for ones in the future. Thank You.

With that out of the way, on a personal preference, I like the cantilevered style of framing with the dropped truss like Stuart shows in the top pic. It just gives more stability if you are out on the eave for any reason. I usually build my own if there are none in stock. A few 2x's, and some OSB for plates, glued and nailed. Using a standard rafter for a pattern, just drop your top riser below the top riser on the rafter. Everything else is the same. Add your uprights, then cover with OSB, construction adhesive, then nail everything together.

 

[poolplayer1]

Thanks Guys for the great help with pictures in building a ladder frame.
What is the average size of an overhang at the gable ends.is it 12" or more?
My eves have a 16" overhang.Do I have to match that at the gable ends or can I just make them 12"?
I also have a dumb question I guess u would call it. When I start laying down my OSB,where do I start my first sheet? Do I start at the gable end and than just add a small piece for the overhang or do I start my first sheet at the overhang.
I forgot to mention that my garage is in my back yard so it doesn't have to look to perfect.
Kevin, yes,I will go to my profile settings and fill out the information that is requested of me.Thanks for mentioning it to me.
I hope that I am not to much of a PITA to you guys with all my questions.
Mando

 

[Stuart in MN]

I'd make the overhangs the same width as the eaves, just because I think it would look better, but you can make them shorter too. Run the OSB all the way from the outer edge of the overhang, that will help tie it into the roof structure better.

 

[poolplayer1]

Thanks Stuart.
I appreciate your help with your response and also the others that gave me good help with building my ladder frame.
Mando

 

[Michigan Mike]

Mando if you are going any more than a 12 inch over hang you will need the outlooker. For 12 inches or less you'r plywood and 2x6 subfacia will support itself. I know building practices are different in different regions of the country but this is standard practice in Michigan this holds for our snow loads and would think it would be plenty in Arizona

 

[Michigan Mike]

Sorry forgot about you'r question about plywood layout and the overhang. Normally we would let the plywood hang out the full two foot then snap a chalk line top to bottom at one foot. If you can cut to the line without any wandering it gives you a nice straight line to nail your rake to.