# What is ''reference turbulence intensity'' in 25.341?

Uσref is the reference turbulence intensity that varies linearly with altitude from 90 fps (TAS) at sea level to 79 fps (TAS) at 24,000 feet and is then constant at 79 fps (TAS) up to the altitude of 60,000 feet.

Does this mean 90 fps (feet per second) is also the limit load? Or is the limit load higher than that?