A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
The ceiling fan's downrod must be long enough for the fan's blades to clear the ceiling. A fan with a 12-inch downrod works for a vaulted ceiling with a one-quarter-to one-third-inch pitch. An 18-inch downrod is sufficient for a pitch that is five-twelfths to one-half inch.
Reply. I am changing the flat ceiling in a one story ranch with a 4 pitch to a cathedral ceiling. I want to know the best way to do it without taking off the roof. The room is 24 wide by 28 deep. the roof rafters are 15 feet from the wall to the ridge.eply. I am changing the flat ceiling in a one story ranch with a 4 pitch to a cathedral ceiling. I want to know the best way to do it without taking off the roof. The room is 24 wide by 28 deep. the roof rafters are 15 feet from the wall to the ridge.