Collar ties are horizontal members that like rafter ties extend from rafter to rafter but.
Framing out an attic.
Use screws to attach sheets of birch plywood to the angled ceiling over the insulation making sure to drive the screws into the ceiling joists.
Framing out an attic question.
Plumb the corners with a level and brace them with 2x4s.
Stand the front wall and align it with the marks on the floor.
Shim under the bottom plate to level it if necessary then nail it into the floor joists with 16d nails.
This is the full view of the attic.
It s got a 2x4 stringer running down the middle of the attic space on the floor as well that i d like to remove in order to have a flat subfloor all the way across.
The plywood will create a smooth strong ceiling without having to apply drywall tape and mud to the ceiling.