Hi, Yes I have with my old diver, you'll need at least a 10 floor building. The highest building in my home town is 5 floors and I broke the the legs on impact, the chute was not inflated completely[>:][&:]. On normal free fall when it has some velocity it opens quickly but with a BASE jump at low hight it doesn't pick up velocity that quickly and delays the deployment time. I'll see if can get the link on the net again of a guy in Switserland who has done some awsome BASE jumps with his diver but he has Radio towers and a high Dam Wall close to his home town so it helps.

Remenber altitude is your friend.