Three feet from the ceiling will give a good circulation of air from above the fan. Remember in the summer time the fan blows the air down, in the winter time the fan draws the air up.
The same height as the downrod is. Don't buy a low profile or flush mount ceiling fan, because these are specially designed for places where the ceiling is less than eight feet high. I would suggest you buy a traditional ceiling fan or a industrial ceiling fan. Industrial ceiling fans are specially designed for high and big places. For more info about this: http://www.ceiling-fan-wizard.com
As the name suggests, high ceiling lights are used to illuminate high ceiling spaces. This usually means that the ceiling ranges from 20 feet to about 45 feet. Relatively speaking, low ceiling lights are used for ceilings of 20 feet and below. Because there is more space to fill in the high ceiling position, the high ceiling is by definition a powerful light source that can illuminate large areas.
Eight feet.
I guess anchor it from 4 separate points on the ceiling, which meet a short distance above the bag...
At worst 18' 6". At best 19' 11.99999999999999".
Yes; if you are 6 feet tall and jump from tramplolene floor at 3 feet then you still have 9 feet to jump to hit ceilng; you won't be able to jump that high.
80 feet
The service ceiling is 50,000 feet.
How high? As high as I can kiss the sky How sick? So sick that you can suck my ....
A plate shelf can hang at eye level or higher. You may want it to run near the top of the ceiling to display a series of plates out of reach.
The main reason bats stay up high is to avoid predators. Bats evolved special feet and joints that make it easy for them to hang that way for a long time, even while sleeping. Hanging from high tree branches or cave ceilings makes the bats difficult to reach, so being upside down means staying alive!
The Boeing 777's service ceiling is 43,100 feet.