As mentioned in other threads, I’m in the planning stages for renovating a walk-up attic.
The current situation:
Front-gabled roof, about 25 feet wide, and 45 feet long.
It’s a little over 11 feet in height to the top of the underside of the roof
The house was built in 1915, and has a slate roof
The current attic framing has 2x6 roof rafters, about 20" apart
There are 1X6 collar ties about 7’ off the floor, also every 20"
The floor joists/ceiling joists are 2X7", about 22" apart
In the middle half of the roof, the plan is to pop out a 21’ shed dormer on one side. We would also put in 5’ knee walls on the portions that do not have the dormer. So, on the left side (non-dormer side), we’ll have 5’ knee walls running “North-South”. On the right side (dormer side), we’ll have 5’ knee walls for the first 12’, then the dormer, and then 5’ knee walls for the last 12’.
Here are some pictures: