International Code Council M2 Commercial Mechanical Inspector Exam Practice Test

The fuel gas venting provisions state that the exit terminals of mechanical draft systems shall be not less than 7 feet above grade where located adjacent to public walkways. Therefore, A is the correct answer.

For appliances on roofs, ICC access provisions require a level platform at the appliance. The platform must be not less than 30 inches in any dimension . For the choices provided, that makes 30 inches the correct answer, which is Option C .

Based on the equipment schedule shown in the exhibit, EF-2 is listed with a motor size of 1.5 horsepower . Therefore, the correct answer is C .

Under the IMC ventilation table, locker/dressing rooms and sports locker rooms are identified with required mechanical exhaust, while spaces such as guard stations do not carry that same exhaust requirement in the table. A high school locker room falls within the locker-room/sports-locker-room category, so Option C is the correct answer. Gambling casinos and office break rooms are provided outdoor air rates, but they are not the required-exhaust space among these listed choices.

A low-pressure steam heating boiler is defined as a boiler furnishing steam at pressures not exceeding 15 psi . That matches Option B .

The ICC administrative provisions require construction documents to be submitted in two or more sets with the permit application. After approval, one set is retained by the code official and one set is returned to the applicant to be kept on the job site during construction. That is exactly the condition described in Option D . The code does not state that all sets are retained by the code official or that the purpose is to provide subcontractor copies or backup copies.

This is also an exhibit-reading question. From the equipment schedule in the image, CEF-5 is listed as a Nutone unit, so Option D is correct. This falls under reading commercial mechanical drawings and equipment schedules related to exhaust/ventilation components.

Under the ICC administrative provisions used with the mechanical code, one approved set is retained by the code official, and one approved set is returned to the applicant. The returned set must be kept on the site of the building or job while the authorized work is in progress. That directly matches Option A . It does not require return to the architect, filing with the county clerk, or retention for one year after completion.

The ICC opening-location rule requires intake openings to be located not less than 10 feet from lot lines or buildings on the same lot . A combustion-air opening taken from the exterior follows that minimum separation rule, so 10 feet is the correct answer. Therefore, Option D is correct.

Hazardous exhaust systems are regulated under the IMC provisions for special exhaust because they handle potentially dangerous fumes, vapors, dusts, or other contaminants. The code requires the duct system and its support components to be suitable for that hazard level, and supports for hazardous exhaust duct must be constructed of noncombustible material . That is why Option C is correct. Plastic and fibrous supports would not satisfy the required fire and safety performance, and UL 181 applies to certain factory-made air ducts and connectors, not as the governing support-material rule for hazardous exhaust duct supports.

The IFGC rule for above-ground outdoor piping requires piping installed outdoors to be elevated not less than 3 1/2 inches above ground , and where installed across roof surfaces, not less than 3 1/2 inches above the roof surface . Therefore, the correct answer is A .

For mechanical draft venting systems, unless the appliance is listed for a different clearance, the vent terminal must be located not less than 4 feet below , 4 feet horizontally from , or 1 foot above any door, operable window, or gravity air inlet into a building. Therefore, the required minimum distance below an openable window is 4 feet , so Option B is correct.

The IMC prohibits energy recovery ventilation systems in several applications, including hazardous exhaust systems , smoke control systems , commercial kitchen exhaust systems , and clothes dryer exhaust systems . Equipment intended to assist with occupant evacuation falls under smoke-control/life-safety type applications and is not an allowed ERV use. By contrast, systems utilizing coil-type exchangers are the exception among the listed choices because they are not one of the prohibited applications in this question. Therefore, Option A is correct.

Vent connectors must be installed with a minimum rise of 1/4 inch per foot . For a 10-foot run, the required rise is:

10 × 1/4 inch = 2.5 inches .

That equals 2-1/2 inches , so Option D is correct.

The IFGC requires the appliance shutoff valve to be located in the same room as the appliance and within 6 feet of the appliance . Therefore, the correct answer is A .