Attaching Roof To Frame

[drunkdog]

for the application even with the possible snow loads involved as long as you are not talking solid panels of roof at less than a 1/12 pitch you are absolutely fine as described to this point....the hurricane straps hanging below the top plate can easily be corrected cosmetically by simply bending the plate so it wraps around the bottom edges of the plate....I may not know chickens but I do have over 20 years of custom homes foundation to finish....and good building

 

[patandchickens]

Quote:
The thing is, once you put a solid roof on like you are wanting to do, it IS a 'building'. Not only does the roof (the roofing panels plus the rafters) have to be strong enough to withstand the snow load, so does what's holding 'em UP. A single 2x4 plate/beam is not going to be adequate, unless you have 4x4 posts every 2' or something like that.

Really, you need to think of this AS A BUILDING. Because of the solid roof. Engineer it the same as you'd build a shed of the same dimensions for your local snowload. The only difference is your walls will be wire instead of solid.

Just sayin',

Pat

 

[enggass]

I have 4x4 Corners with 2x4 walls in between. Each wall has a stud about every 24". What would my pitch be if I drop 1' over 6'? 1/6?

 

[drunkdog]

I dont know about the snow loads in Maine but I had apparently misread it as being an open roof....I agree with the above poster if it is a solid roof....1 in 6 would translate to a 2/12 pitch though roof pitches are calculated in inches the math is obviously simple

 

[enggass]

Where I am in Maine is near the coast. We do get an occasional whopper storm that may drop a foot of snow, but usually we get 4"-8" max at a time...
Thanks all for your input. Very helpful.
Steve

 

[patandchickens]

It is the occasional foot of wet snow you have to design for, though.

Honest, go to your local municipal bldg dep't and find out what snowload they require bldgs to be designed for, then use span (engineering) tables to make sure that your proposed construction is suitable for that load.

One thing to be aware of, in substituting closer-spaced 2x4s for further-spaced 4x4s, is that 2x4s are prone to bending where 4x4s are not. I would not suggest testing them to their theoretical limits (or you can sister on another 2x4 to one or more of the existing ones, edgewise, so the resulting post is L-shaped in cross-section, which is pretty strong)

Pat

 

[enggass]

Can someone explain how to go about figuring out how to notch your rafters?

 

[Happy Chooks]

We're using hurricane straps on both sides of the roof. The tall end has ones have a V notched in them. The low end has ones that sit flat against the ceiling joist and bend to a 90 degree to hold to the wall. Got them at Home Depot.

Here's how far we are. Roof framing is next. Don't mind the OSB leaning against it.

 

[enggass]

Thanks, Got any closeups of the Ties you're using?

 

[Happy Chooks]

Quote:
No, but I'll get one.