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ICC Mechanical Exam Practice Questions Part 1 Questions and Answers 2024
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ICC Mechanical Exam Practice Questions Part 1
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ICC Mechanical Exam PracticeQuestions Part 1
Exhaust ducts under positive pressure, chimneys, and vents may not extend into or
pass through _________________. Exceptions ignored. - answer plenums and ducts
_____________________________________ systems are permitted to be backfilled
prior to inspection. - answer Ground-source heat pump loop
Air necessary for complete combustion of a fuel, including theoretical air and excess air.
- answer 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. - answer6 inches
Air removed from a conditioned space and intended for reuse as supply air. - answer
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. - answer 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? - answer No
On a liquid fuel oil system the outer ends of vent pipes must terminate in a
_______________________. - answer 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. - answer 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
____________________________________. - answer 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? - answer1.875 inches
Ducts and air transfer openings are required to be protected with a minimum Class II,
_______________ smoke damper complying with the International Building Code. -
answer250 degrees
What is the minimum required clearance distance from combustibles for commercial
kitchen Type I hood installation? Exceptions Ignored. - answer18 inches
R-290 Refrigerant has what refrigerant classification. - answerA3
The minimum size of a supply line for a fuel oil system is
_______________ inside diameter nominal pipe or _________ OD tubing. - answer3/8-
inch, 3/8-inch
On a fuel oil system, a relief valve must be installed on the pump discharge line where a
valve is located __________________ the pump and the pump is capable of exceeding
the pressure limitations of the fuel oil system. - answer downstream of
An alternative material, design or method of construction may be approved where the
code official finds that the proposed design is satisfactory and complies with the intent
of the provisions of the code, and that the material, method or work offered is, for the
purpose intended, at least the equivalent of that prescribed in the code in
______________________________________________________________. - answer
quality, strength, effectiveness, fire resistance, durability and safety.
Solar thermal equipment exposed to vehicular traffic has to be installed not less than
_______________ above the finished floor. Exception: This section must not apply
where the equipment is protected from motor vehicle impact. - answer6 feet
Sub slab soil exhaust system ducts must extend through the roof and terminate at least
___________________ above the roof and at least 10 feet from any operable openings
or air intake. - answer6 inches
A passageway within a chimney or vent through which gaseous combustion products
pass. - answer flue
Air exhaust and intake openings that terminate outdoors must be protected with
corrosion- resistant screens, louvers or grilles. For intake openings in commercial
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