Rated Wind Velocity-The Rated Wind Velocity and Loading for antennas is calculated using industry standard TIA-329-C. The calculation for rated wind velocity determines the maximum wind velocity at which the mechanical stresses in the antenna are below the yield point of the materials by a safety factor of not less than 1.65 as specified in 5.1.2 of the standard.
Rated Wind Velocity calculated using this methodology is the wind speed at which an antenna can endure sustained exposure without failure.
Survival Wind Velocity- The calculation for Survival Wind Velocity determines the maximum wind velocity at which the mechanical stresses in the antenna components are just below the allowable yield strength of the mast, boom and dipole material.  Survival Wind Velocity calculated using this method is the wind speed at which an antenna cannot endure sustained exposure over longer periods of time without experiencing some degree of material deformation or malfunction.  Inspection after the survival wind speeds is recommended.