ICC Mechanical Exam Practice
Questions Part 1 QUESTIONS AND
ANSWERS 100% RATED CORRECT
WITH 100% SURE PASS|GRADED A+
Exhaust ducts under positive pressure, chimneys, and vents may not extend into or pass through
_________________. Exceptions ignored. - CORRECT ANSWERS plenums and ducts
_____________________________________ systems are permitted to be backfilled prior to inspection.
- CORRECT ANSWERS Ground-source heat pump loop
Air necessary for complete combustion of a fuel, including theoretical air and excess air. - CORRECT
ANSWERS Combustion Air
Equipment and appliances installed at grade level must be supported on a level concrete slab or other
approved material extending not less than 3 inches above adjoining grade or must be suspended not
less than ____________ above adjoining grade. Such support shall be in accordance with the
manufacturer's installation instructions. - CORRECT ANSWERS 6 inches
Air removed from a conditioned space and intended for reuse as supply air. - CORRECT ANSWERS
Recirculated Air
For buildings containing dust, stock and refuse collectors and separators such systems as centrifugal
separators, bag filter systems and similar devices, those devices and associated supports must be
constructed of noncombustible materials and must be located on _________________________ .
Exceptions ignored. - CORRECT ANSWERS the exterior of the building or structure
An installer has an 80,000 Btu per hour input fan-assisted appliance that must be installed using 10 feet
of lateral connector attached to a 30-foot-high Type B vent. Two 90-degree elbows are needed for the
installation. Can a single-wall metal vent connector be used for this application? - CORRECT ANSWERS
No
, On a liquid fuel oil system the outer ends of vent pipes must terminate in a _______________________.
- CORRECT ANSWERS weatherproof vent cap or fitting or be provided with a weatherproof
hood
Ventilation must be provided in an approved manner in battery-charging areas for powered industrial
trucks and equipment _____________________. Exceptions ignored. - CORRECT ANSWERS
to prevent a dangerous accumulation of vapor pressure
The installation of fuel gas distribution piping and equipment, fuel gas- fired appliances and fuel gas-
fired appliance venting systems is regulated by the ____________________________________. -
CORRECT ANSWERS International Fuel Gas Code
2x12 nominal ceiling joists 12 feet long will need to be notched to accommodate an air duct, if the notch
is at the top of the joists and not in the center 1/3 of the joists. What is the maximum allowable depth of
the notches in inches? - CORRECT ANSWERS 1.875 inches
Ducts and air transfer openings are required to be protected with a minimum Class II, _______________
smoke damper complying with the International Building Code. - CORRECT ANSWERS 250
degrees
What is the minimum required clearance distance from combustibles for commercial kitchen Type I
hood installation? Exceptions Ignored. - CORRECT ANSWERS 18 inches
R-290 Refrigerant has what refrigerant classification. - CORRECT ANSWERS A3
The minimum size of a supply line for a fuel oil system is
_______________ inside diameter nominal pipe or _________ OD tubing. - CORRECT ANSWERS
3/8-inch, 3/8-inch
Questions Part 1 QUESTIONS AND
ANSWERS 100% RATED CORRECT
WITH 100% SURE PASS|GRADED A+
Exhaust ducts under positive pressure, chimneys, and vents may not extend into or pass through
_________________. Exceptions ignored. - CORRECT ANSWERS plenums and ducts
_____________________________________ systems are permitted to be backfilled prior to inspection.
- CORRECT ANSWERS Ground-source heat pump loop
Air necessary for complete combustion of a fuel, including theoretical air and excess air. - CORRECT
ANSWERS Combustion Air
Equipment and appliances installed at grade level must be supported on a level concrete slab or other
approved material extending not less than 3 inches above adjoining grade or must be suspended not
less than ____________ above adjoining grade. Such support shall be in accordance with the
manufacturer's installation instructions. - CORRECT ANSWERS 6 inches
Air removed from a conditioned space and intended for reuse as supply air. - CORRECT ANSWERS
Recirculated Air
For buildings containing dust, stock and refuse collectors and separators such systems as centrifugal
separators, bag filter systems and similar devices, those devices and associated supports must be
constructed of noncombustible materials and must be located on _________________________ .
Exceptions ignored. - CORRECT ANSWERS the exterior of the building or structure
An installer has an 80,000 Btu per hour input fan-assisted appliance that must be installed using 10 feet
of lateral connector attached to a 30-foot-high Type B vent. Two 90-degree elbows are needed for the
installation. Can a single-wall metal vent connector be used for this application? - CORRECT ANSWERS
No
, On a liquid fuel oil system the outer ends of vent pipes must terminate in a _______________________.
- CORRECT ANSWERS weatherproof vent cap or fitting or be provided with a weatherproof
hood
Ventilation must be provided in an approved manner in battery-charging areas for powered industrial
trucks and equipment _____________________. Exceptions ignored. - CORRECT ANSWERS
to prevent a dangerous accumulation of vapor pressure
The installation of fuel gas distribution piping and equipment, fuel gas- fired appliances and fuel gas-
fired appliance venting systems is regulated by the ____________________________________. -
CORRECT ANSWERS International Fuel Gas Code
2x12 nominal ceiling joists 12 feet long will need to be notched to accommodate an air duct, if the notch
is at the top of the joists and not in the center 1/3 of the joists. What is the maximum allowable depth of
the notches in inches? - CORRECT ANSWERS 1.875 inches
Ducts and air transfer openings are required to be protected with a minimum Class II, _______________
smoke damper complying with the International Building Code. - CORRECT ANSWERS 250
degrees
What is the minimum required clearance distance from combustibles for commercial kitchen Type I
hood installation? Exceptions Ignored. - CORRECT ANSWERS 18 inches
R-290 Refrigerant has what refrigerant classification. - CORRECT ANSWERS A3
The minimum size of a supply line for a fuel oil system is
_______________ inside diameter nominal pipe or _________ OD tubing. - CORRECT ANSWERS
3/8-inch, 3/8-inch
