General framing question

[Backwaterdogs]

Hey all was hoping someone could help.

Putting a wood burner and as luck would have it, I have to right where a rafter is ( yes rafter not truss).

So to get my exhaust through, had to cut out about 10 inch of rafter

I just supported the rafter by coming straight down with 2x on to structure tied in with ceiling joists. Wasn't going to be possible to box this cut in across to the other rafters.

Hope this makes sense. Sound like a reasonable approach?

 

[readhead]

Unless you head it off to the other rafters it doesn't really have any support. Pictures would help.

 

[cjcocn]

As readhead stated, pictures would help, but it almost sounds like you cut one of the major supporting pieces.

 

[scottydosnntkno]

From the description, technically it is against code.

However, one cut rafter, that has the vertical weight/droop supports as you described will work just fine. Your roof decking can’t span 3-4’, so by adding to the supports you take the droop factor out. The only negative is the slight increase to shear/spreading applied to the wall but one single rafter should not have any detrimental effects. The sheathing has enough shear factor to make it up

 

[readhead]

Problem is we don't know what these "supports" look like. Need pictures.

 

[Loose Ctrl]

What Scotty said. I would have boxed the rafters in around the through hole under the roof sheathing before tying into the ceiling/roof joists. If it was an option, I would have used offsets to move the pipe around the rafters.

 

[Kevin54]

If you cut a rafter, you really screwed up. Plain and simple. You should have researched what you were doing before you did it.

 

[Backwaterdogs]

This was a exhaust for a wood burning stove.

It was put in as close to ext wall as possible thru a hip. Where it landed in the attic space would not all you angle 6 inch double wall. So was either that or move the where it would no longer be centered.

Will try to get or drawing what I did...maybe will need to do something

Here is sketch of what I got

 

[Backwaterdogs]

 

[Backwaterdogs]

Looks like I may be unable to post a url.or image since I'm a new account...had another acct for years but had to create a new one for this thread.

If interested my sketch of what was done is below. Have to change the x to an h and paste in browser.

Xttps://ibb.co/dWtiXA

 

[captain14]

You have to have a minimum number of posts before you can do
Certain things on GJ.

Maybe start an introduction of what you’re doing in the shop, future plans or past projects etc.

 

[Backwaterdogs]

Oh ok, ty!

This particular area isn't my shop, but rather a sunroom/deck.

 

[Backwaterdogs]

The deck isn't normal stick framing.

The walls are 6x6 post and 2x6 walls between post...so are pretty rigid.

 

[Backwaterdogs]

On the side I cut the rafter, its 20ft I think, with a 6x6 on each corner and 6x6 post in center and two 2x6 wall sections.

 

[Backwaterdogs]

The roof section on this wall is hippest mentioned and roof over this room is all rafters.

Don't remember how many rafters, but I recall them being about 24 in o.c. way out close to the wall where I cut. So must be a good 8 plus rafters tied to main roof support at peak to this wall.

I would cut the very center one and then supported as I tried to sketch below. Didn't take pics...just did it.

 

[firebirdparts]

This is a hip roof?

 

[Jim_No_Garage]

Worst comes to worst you have to go back and frame it like a skylight opening.

Double up full size lumber between 2 uncut rafters to tie in the ends of the cut rafter.

Jim

 

[wrenchguy]

theres always more than 1 acceptable way to fix anything. maybe install undermount sleepers up and down run of opening. sounds like ur working down close to the wall a minimum height issue. prolly holding the rafter from the joist will work.

 

[Backwaterdogs]

Thanks for all the replies!

Yes I it is a hip roof and ideally I would have frame it in
Like a skylight, but without cut a much larger hole in roof or room ceiling( room ceiling is tongue and groove, not drywall)...it just didn't seem possible, tho I know that would have been best.

Yes was out close to wall and pretty tight from below.

Guess I was looking for confirmation was I did will suffice...or if I need to plan to go back in and frame a box. But this will require coming from roof....not undo able, but will likely wait until spring.

 

[readhead]

Hope you make it to spring. Keep the snow raked off.

 

[firebirdparts]

Ceiling joists are not particularly strong, and so you did the wrong thing, putting a pretty heavy point load onto the ceiling. However, it may be fine in practice. A lot of things often are. I asked about the hip because I was wondering why the joists were running the wrong way.

 

[LS6 Tommy]

Admittedly, I don't know much about carpentry, but as Mark Donohue once said, "If it doesn't look right, it probably isn't". What you did doesn't look right...

Tommy