M2 Questions and Answers

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 .

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.

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.

The IFGC definition of fuel gas is: natural gas, manufactured gas, liquefied petroleum gas or mixtures of these gases . That definition directly matches Option B .

The ICC mechanical code requires condensate disposal components to be of approved corrosion-resistant material , and the drain line shall not decrease in size from the drain pan connection to the place of disposal. The code minimum size is 3/4 inch , so the 1/2-inch statement is incorrect, and the code is not limited to PVC only. Also, the slope requirement for horizontal drain piping is not less than 1/8 inch per foot , not 1/4 inch per foot. That makes Option A the only fully correct statement.

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 .

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.

Based on the mechanical plan shown in the exhibit, the gas line between unit heaters 5 and 8 is labeled as 1 inch in diameter. Therefore, the correct answer is B.

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 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.