Red Seal Plumbing Practice Exam

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The Rule Of Thumb (ROT) vent sizing may only be used to determine the vent sizing for what scenarios?

Residential applications
Commercial applications
Industrial applications
All of the above

The correct answer is: All of the above

The Rule Of Thumb (ROT) vent sizing can be used for various applications, and it is not limited to a specific scenario. Therefore, options A, B, and C are incorrect because they only specify a certain type of application, while the question asks for all scenarios. Option D encompasses all the given options and is, therefore, the correct answer.