I would probalby place them in between the existing 2x6 s.
Lvl beam in attic.
Versa lam laminated veneer lumber lvl beams and headers eliminate twisting shrinking and splitting and deliver flatter quieter floors and structures.
Laminated veneer lumber lvl is manufactured through a heat and pressure process that produces wood beams that are much stronger for their size than ordinary wood.
A couple of additional thoughts i have if your new joists are lvl beams or wood i joists.
Multiple pieces of boise versa lam laminated veneer lumber can be assembled for greater thicknesses that can carry even heavier loads across even longer spans.
Our 12 ft long beam was made from doubled 11 7 8 in wide x 1 3 4 in thick lvls laminated veneer lumber a very common strong type of beam that looks exactly like thick plywood boards.
Lvl is ideal for floor beams garage doors window and door headers and ridge and hip beams.
I want to install an lvl beam in my attic to support my ceiling rafters.
1 75 in x 11 87 in x 20 ft versa lam laminated veneer lumber.
You will not have to build temp walls if the beam is on top of the ceiling joists as removing the existing wall will be done after the beam and hangers are in place.
The beam system we show will work for nearly any opening up to 12 ft.
Item 9529 model 2100006.
I am removing a wall that separates my kitchen and living room.
2 in x 12 in x 20 ft.
Any lumberyard will be able to furnish the beam and other materials.
On a 4 12 pitch like it looks like you have the 18 x16 lvl laid flat will slide up in between the 16 oc ceiling joists while someone in the attic flexes it down while it is pushed up.
One end would be supported on my gable end and the other side would be on a supporting wall.
Beam width should be 1 4 to 1 3 beam depth.
Lvl is similar in appearance to plywood without cross bands.
The width can be increased by laminating in multiples of 1 3 4 inches.
It would be difficult to find a joist hanger that would fit a double joist comprised of a 1 3 4 lvl or i joist and 1 1 5 2x6.