When doing a preliminary design for daylighting, what are some common standards or rules-of-thumb that people use to determine feasibility or to incorporate daylighting areas into an energy model? I've seen sources that state the daylighting depth would be 1.5 times the ceiling height, but I've also seen the daylighting depth would be 2.5 times the window-head height (floor to top of window) for example.
As a bonus question, I'm working on a basketball court in a gym with 34' ceilings where side daylighting is of interest. Would the same standard or rules-of-thumb apply when dealing with such high ceilings, or does it depend more on the window size/location at that point?
