blackhawks Monday, 10/21/19 08:10:58 PM Re: DesertDrifter post# 141670 Post # of 143383 LOL! The required window strength to withstand high winds at heights above 60 floors would also withstand a ball peen hammer, so there's that. Truthfully, the window thickness for insulation and sound deadening is the same at all levels. Now you're going to also have to have a sheer walled building, without step backs, so you'll have clearance space and time to pull your rip cord and to yell Geronimo! No, if it were a practical consideration stories would abound in NY and Chg. for sure. Best to find the stairwell or a working elevator.