Sentence 5.2.2.2.(3)

Intent 1:

To limit the probability of using inappropriate wind load assumptions, which could lead to the deflection, movement and deterioration of required environmental separation elements subject to wind load, which could lead to the failure of such elements, which could lead to the inadequate control of:

• precipitation ingress due to air pressure differences,
• condensation, or
• the ingress of airborne moisture from the ground.

This is to limit the probability of vibration and deflection, which could lead to negative effects on the psychological well-being of persons.

Intent 2:

To exempt certain environmental separation elements from the requirement to be designed for 100% of the specified wind load, where tests or analysis have demonstrated that certain elements will be exposed to a lesser specified wind load.