Under the optional calculation method, the multifamily dwelling is permitted if which conditions are met?

Under the optional calculation method, the multifamily dwelling is permitted if which conditions are met?

• A. I only
• B. Neither I nor II
• C. Both I and II
• D. II only

Answer: (C)

Using the optional calculation method gives a simplified way to size loads for a multifamily building, but it can be used only if two specific conditions are both met. Those conditions ensure the method’s assumptions about how loads are distributed and how the service is sized are valid; meeting both keeps the design safe and code-compliant. If either condition isn’t satisfied, you must use the standard calculation method. So the multifamily dwelling is permitted under the optional method only when both conditions are satisfied.

Using the optional calculation method gives a simplified way to size loads for a multifamily building, but it can be used only if two specific conditions are both met. Those conditions ensure the method’s assumptions about how loads are distributed and how the service is sized are valid; meeting both keeps the design safe and code-compliant. If either condition isn’t satisfied, you must use the standard calculation method. So the multifamily dwelling is permitted under the optional method only when both conditions are satisfied.