I need to move some supports from a wall.

I have a wall that in the living room that runs directly into a wall in the kitchen. Both are outside walls and both are running in the same direction, say North to South. There is a door leading to the back deck between the two walls. We cut a whole in the living room wall (just throught the wood paneling not completely throught the wall), to the right of the door, in order to place a pet door in the the wall. When I removed the piece of wood paneling here is what I noticed from the living room wall to the door (left to right). First there are 6 2x4 all together going up the wall. It looks as if 3 support the living room which has no attic above it, it is a slanted ceiling 8' at the end I am working with and 15' at the opposite end. The other 3 2x4s look as if they support the kitchen celing, which has an attic above it and the entire kitchen ceiling is 8'. There is then aproximately 6 inches of space and then the deck door frame and casing. I need to know if what I am thing is possible or if there is something better that I can do. I am thinking of installing a double 2x4 support to the left of the existing supports. Then installing a 2 foot high 2x4 next to the new supports and another next to the deck door frame and casing. I was then going to cut the existing supports so that they would rest on 2 2x6 turned on their sides which rest on the 2' 2x4s. Creating an upside down U in which I can install the pet door. I am thinking that I should support the ceiling somehow before I cut the beams. Please advise me before I make my house fall down.
Thanks, John Davis
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Um, I'd call an engineer, or your house most likely *will* fall down.
Those extra 2x6s are doing a lot of work supporting the cathedral ceiling, and I wouldn't touch them for all the tea in china. If you want to open this wall up it's probably going to involve a steel beam somewhere which will require its *own* new reinforced supports.
In our basement is an 8x8 beam that was cut in the 1920s when a wing was moved and the basement stairs needed to go a different direction. Took a lot of jacking to get the house straight again.
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I'd about decided that the OP was a troll, but on the off-chance that the idiot is serious, the correct solution is to move the damn pet door 8" to the side, to go around the posts.
Or eat the pet.
--Goedjn
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