ICA Exam Practice Questions and Answers | 2026
UPDATED | 100% CORRECT
If water infiltration is suspected behind a finished surface. What tool would be the best
choice to verify dampness?
an infrared thermometer
a pin-type moisture meter
a non-contact moisture meter
a digital camera
a non-contact moisture meter
Gas-fired furnace heat exchangers most often fail from
low temperatures.
lack of use.
improper gas pressure.
rust and metal fatigue.
rust and metal fatigue.
Relative Humidity (RH) is expressed as
volume.
percentage.
capacity.
temperature.
percentage
,Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and
copper pipe, will usually cause
reduced water pressure.
decreased water quality.
glazed pipes.
electrolysis.
electrolysis
Which has the LEAST effect on the deflection of a dimension lumber floor system?
joist width
joist grade
joist species
joist spacing
joist width
The normal MAXIMUM rise of residential stair treads is:
5 1/4 inches.
7 3/4 inches.
8 1/2 inches.
9 3/4 inches.
7 3/4 inches.
An ungrounded receptacle may be replaced by a ground fault circuit interrupter installed:
on the same phase as the receptacle.
upstream from the receptacle.
,downstream from the receptacle.
anywhere in the receptacle branch circuit.
upstream from the receptacle.
Circuit breakers
protect inhabitants by limiting stock duration.
regulate power to the attached equipment.
protect the wire from an electrical overload.
measure the current in a circuit.
regulate power to the attached equipment.
In a forced air heating system containing a split system air conditioner and a humidifier,
humidity is reduced by
running the humidifier in reverse.
condensation at the condenser coil.
condensation at the evaporator coil.
condensation within the compressor.
condensation at the evaporator coil.
A home inspection report MUST include
the general life expectancy of the roofing material.
information on flammability of the roof material.
the type of roof material and the method of observation.
the age of the roof.
, the type of roof material and the method of observation.
Water hammer can occur as a result of
a lack of air chambers.
faulty shutoff valves.
loose piping.
low static water pressure.
a lack of air chambers.
If a system designed for use with natural gas is supplied with propane gas
no changes are needed for the equipment to function properly.
the flame will be too high unless a smaller orifice is installed.
the flame will be too low unless a larger orifice is installed.
the gas regulator and valve must be replaced.
the flame will be too high unless a smaller orifice is installed.
When looking at the exterior wall of a sixty year old brick masonry house with a gable roof,
you notice a horizontal crack in the mortar and outward brick displacement along the
gutter edge of the roof. The displacement is greatest at the center of the top three courses of
brick. This condition is MOST likely caused by
excessive sand in the mortar mix.
defective brick bonding.
improper ceiling joist installation.
differential settlement.
improper ceiling joist installation.
UPDATED | 100% CORRECT
If water infiltration is suspected behind a finished surface. What tool would be the best
choice to verify dampness?
an infrared thermometer
a pin-type moisture meter
a non-contact moisture meter
a digital camera
a non-contact moisture meter
Gas-fired furnace heat exchangers most often fail from
low temperatures.
lack of use.
improper gas pressure.
rust and metal fatigue.
rust and metal fatigue.
Relative Humidity (RH) is expressed as
volume.
percentage.
capacity.
temperature.
percentage
,Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and
copper pipe, will usually cause
reduced water pressure.
decreased water quality.
glazed pipes.
electrolysis.
electrolysis
Which has the LEAST effect on the deflection of a dimension lumber floor system?
joist width
joist grade
joist species
joist spacing
joist width
The normal MAXIMUM rise of residential stair treads is:
5 1/4 inches.
7 3/4 inches.
8 1/2 inches.
9 3/4 inches.
7 3/4 inches.
An ungrounded receptacle may be replaced by a ground fault circuit interrupter installed:
on the same phase as the receptacle.
upstream from the receptacle.
,downstream from the receptacle.
anywhere in the receptacle branch circuit.
upstream from the receptacle.
Circuit breakers
protect inhabitants by limiting stock duration.
regulate power to the attached equipment.
protect the wire from an electrical overload.
measure the current in a circuit.
regulate power to the attached equipment.
In a forced air heating system containing a split system air conditioner and a humidifier,
humidity is reduced by
running the humidifier in reverse.
condensation at the condenser coil.
condensation at the evaporator coil.
condensation within the compressor.
condensation at the evaporator coil.
A home inspection report MUST include
the general life expectancy of the roofing material.
information on flammability of the roof material.
the type of roof material and the method of observation.
the age of the roof.
, the type of roof material and the method of observation.
Water hammer can occur as a result of
a lack of air chambers.
faulty shutoff valves.
loose piping.
low static water pressure.
a lack of air chambers.
If a system designed for use with natural gas is supplied with propane gas
no changes are needed for the equipment to function properly.
the flame will be too high unless a smaller orifice is installed.
the flame will be too low unless a larger orifice is installed.
the gas regulator and valve must be replaced.
the flame will be too high unless a smaller orifice is installed.
When looking at the exterior wall of a sixty year old brick masonry house with a gable roof,
you notice a horizontal crack in the mortar and outward brick displacement along the
gutter edge of the roof. The displacement is greatest at the center of the top three courses of
brick. This condition is MOST likely caused by
excessive sand in the mortar mix.
defective brick bonding.
improper ceiling joist installation.
differential settlement.
improper ceiling joist installation.
