skippyscage
"why you ask"
Because I would have thought that it was quite important. What do people use in their performance calculations? (watching some of the departures it is obvious that some people don't bother with performance calculations).
Most spamcans have a certification limit of two degrees. If, as I suspect, the gradient of this runway is three degrees then these aircraft are taking off outside their performance limits, and their insurance would be invalid.
If the aircraft is group owned then the group members could be jointly liable to any claim.