I have a 15 foot load bearing wall on a single story house that I am wanting to remove. My question is can i install sister joist and a few joist to make it a small truss in the attic and still be able to take out the wall safely. The wall is in the middle of the house and appears that there is just a few electrical wires which is no problem in moving. Also it is a hip roof style construction. Thanks
If the joists run parallel to the wall, are you certain the wall is load bearing? Your post is very confusing, perhaps you can post a measured diagram showing the framing in the attic and its relationship to the wall. A fifteen foot span would require a designed truss, or a designed beam, in either case you need a good diagram to start with, then some serious engineering.