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International Code Council Commercial Mechanical Inspector Sample Questions:

1. All exposed gas piping shall be kept above grade a minimum of _____ inches.

A) 12
B) 3.5
C) 8.5
D) 6

2. Given: The listed clearance is 12 inches.

What would be the reduced clearance to combustibles, in inches, if the millboard is replaced with 24-gauge sheet metal?

A) 4
B) 2
C) 3
D) 6

3. Ducts shall not be permitted to be connected to:

A) a high-static-pressure-type unit heater.
B) an evaporative cooler.
C) a vented wall furnace.
D) a gravity-type warm-air furnace.

4. Shutoff valves in plastic pipe ground-source heat pump loop systems shall be installed on both sides of which one of the following?

A) Expansion tanks
B) Heat-fusion joints
C) Change-in-material joints
D) Pressure-reducing valves

5. Termination of vents for appliances listed for and installed outdoors that incorporate integral venting shall:

A) be installed in accordance with the design professional's plans as approved by the local building official.
B) terminate not less than 5 feet vertically above the lowest connected appliance draft hood outlet or flue collar.
C) terminate not less than 5 feet vertically above the highest connected appliance draft hood outlet or flue collar.
D) be installed in accordance with their listings and the manufacturer's installation instructions.

Solutions: