Can Class I materials be used on structures over 75 feet tall if combined with Class II materials?

The assertion is that Class I materials cannot be used on structures over 75 feet tall when combined with Class II materials, which is consistent with the standards governing lightning protection systems. Class I materials have specific conductivity and design characteristics suitable for certain applications, and when it comes to structures exceeding 75 feet in height, there are stringent requirements to ensure adequate protection against lightning strikes.

Class II materials, while less conductive than Class I, do not compensate for the deficiencies that may arise when used on tall structures. The height of a structure introduces increased risks and requires careful consideration of materials' performance in terms of capturing and conducting lightning energy safely into the ground.

The blending of Class I and Class II materials at heights above 75 feet does not adhere to established safety standards. The combination may not provide the necessary protection levels, rendering the use of Class I materials on such tall structures impractical or unsafe. Thus, it is indeed accurate that Class I materials cannot be utilized in conjunction with Class II materials for buildings soaring beyond this height limit, confirming the assertion as true.