International Code Council M2 Actual Free Exam Questions & Community Discussion

Exam Code/Number: M2
Exam Name/Title: Commercial Mechanical Inspector
Certification Provider: International Code Council
Corresponding Certification: Commercial Inspector

Exam Questions: 52
Updated On: Jul 12, 2026

Question #25

Indoor combustion air shall be provided within:

A. 2 feet of the ceiling and 1 foot of the floor.

B. 1 foot of the ceiling and 1 foot of the floor.

C. 2 feet of the ceiling and 2 feet of the floor.

D. 1 foot of the ceiling and 2 feet of the floor.

Discussion 0

Correct Answer: B Vote an answer

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Question #26

Given: A recirculating industrial direct-fired makeup air heater has a rated input of 200,000 Btu/h .
Ventilation air is supplied by separate mechanical means.
Outside ventilation air shall be provided to supply at least _____ CFM.

A. 800

B. 250

C. 1250

D. 400

Discussion 0

Correct Answer: A Vote an answer

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Question #27

Why are two or more sets of construction documents, engineering calculations, diagrams, and other data required to be submitted with each application for a permit?

A. All sets of documents are to be kept by the code official, and at least one set will serve as a backup set of documents in case the other is lost or misplaced.

B. One set will be retained by the code official, and the other will be returned to the applicant and kept on the job site for reference while construction is in progress.

C. All sets are to be retained by the code official in order to have a spare set of construction documents for use by any subcontractors.

D. To ensure that the project is completed in a timely manner.

Discussion 0

Correct Answer: B Vote an answer

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Question #28

An equipment shutoff valve shall be in the same room and not more than how many feet away from the appliance?

A. 6

B. 7

C. 9

D. 8

Discussion 0

Correct Answer: A Vote an answer

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Question #29

An 8-inch Type B venting system with a listed vent cap must terminate a minimum of _____ feet above the flat roof through which it passes.

A. 2

B. 5

C. 4

D. 1

Discussion 0

Correct Answer: D Vote an answer

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Question #30

Supports for hazardous exhaust duct shall be constructed of:

A. fibrous material.

B. material complying with UL 181.

C. noncombustible material.

D. plastic.

Discussion 0

Correct Answer: C Vote an answer

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