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International Code Council Commercial Mechanical Inspector Sample Questions:

1. What is the minimum air velocity that must be provided by an exhaust duct system serving a Type I range hood?

A) 2,500 FPM
B) 500 FPM
C) 500 CFM
D) 1,500 FPM

2. Air mechanically exhausted from a room must be:

A) discharged into the attic.
B) discharged to the outdoors.
C) recirculated.
D) filtered.

3. A cooling system with a condensate disposal system:

A) shall not be less than 3/4-inch PVC pipe or equivalent approved material.
B) shall be made of an approved pipe and be at least 1/2-inch in diameter.
C) shall have all horizontal sections of drain piping installed with a minimum of 1/4 inch per foot slope.
D) shall be made of approved corrosion-resistant material and shall not decrease in size from the drain pan connection to the place of condensate disposal.

4. ERV systems shall not be installed in which of the following except:

A) systems utilizing coil-type exchangers.
B) common exhaust systems for clothes dryers.
C) exhaust systems emitting corrosive materials.
D) equipment designed to assist in the evacuation of occupants.

5. Given: a six-story, sprinklered, multifamily building with a continuously ventilated shaft extending vertically from the first floor to the roof and used for exhaust.
Which of the following requirements must also be met?

A) kitchen exhaust that penetrates the shaft without a fire damper and extends vertically 12 inches.
B) fire dampers are installed that are connected to an emergency generator rated for 1 hour.
C) have steel subducts with wall thickness of 0.0186 inch extending 22 inches horizontally into the shaft.
D) kitchen exhaust that penetrates the shaft without a fire damper and extends vertically 22 inches.

Solutions: