To frame closet walls, mark the plate positions, cut out the plates, cut all the wall studs, and toe-screw the studs to the plates. Frame the door by nailing the trimmers to wall studs, "cripple" studs to the top plate and the header to the cripple plates.
- Mark the plate positions
Use a pencil to mark the position of the ends and center of the new closet wall. Mark 1.75 inches on either side of each mark. Use a chalk line to snap parallel lines for the marks you just made.
- Mark the floor points
Hang a plumb bob from the end of the lines, marking them on the floor. Use the chalk line to snap parallel lines for the sole plate position.
- Mark the top and sole plates
Lay the top plates next to the sole plates so they are flush at both ends. Use a combination square to mark 1.5 inches in from one end. Measure up 15.25 inches, and mark. Mark a further 16.75 inches. Continue marking at 16-inch intervals until you reach the end for the stud locations.
- Cut the studs
Subtract 3.75 inches from the ceiling height. Mark each stud, and cut.
- Cut trimmer and header studs
Measure your door. Cut two trimmer studs the precise height of your door. Cut one header stud the width of the door.
- Cut and fasten the wall studs
Cut the wall studs to fit snugly between the top and sole plates. Use toe screws to fasten them to the plates.
- Nail "cripple" studs in place
Nail short boards to the top plate to make up the difference between the ceiling and the door header. Nail the trimmers to a wall stud on either side. Nail the header to the cripple studs and to the king studs. Drive nails in at a 45-degree angle.