Guam, your reply left me somewhat puzzled.
Guam, is it your position that each and every takeoff of a cargo carrying 747 is done at an operational limit?
Your Reply: Absolutely!
OK, I'll ask a different way: what
operational limit is the standard departure?
Your explanation that you use a standard departure is understood.
EDIT: I got a few insights in
this thread at tech log. I also noted from someone above that there's ample room on departure.