2025 ICC B1 Exam Definitions Questions
with correct Answers A+ Graded 100%
Verified
Air admittance valve - ANS-A one-way valve designed to allow air into the plumbing drainage
system where a negative pressure develops in the piping.
Air circulation, forced - ANS-A means of providing space conditioning utilizing movement of air
through ducts or plenums by mechanical means
Air-conditioning system - ANS-A system that consists of heat exchangers, blowers, filters,
supply, exhaust and return-air systems
Air-impermeable insulation - ANS-An insulation having an air permanence equal to or less than
0.02
Antisiphon - ANS-A term applied to valves or mechanical devices that eliminate siphonage.
Backflow - ANS-the flow of water or other liquids, mixtures or substances
into the distributing pipes of a potable supply of water from any source other than from its
intended source.
Backflow preventer - ANS-Prevents backflow into the potable water supply
Backsiphonage - ANS-The flowing back of used or contaminated water from piping into a
potable water-supply pipe due to a negative pressure in such pipe
Boiler - ANS-A self-contained appliance from which hot water is circulated for heating purposes
and then returned to the boiler
- Water temps not exceeding 250 degrees F
Braced wall line - ANS-A straight line through the building plan that represents the location of
the lateral resistance provided by the wall bracing
Branch - ANS-Any part of the piping system other than a riser, main or stack
, Branch, main - ANS-A water-distribution pipe that extends horizontally off a main or riser to
convey water to branches or fixture groups
Branch, vent - ANS-A vent connecting two or more individual vents with a vent stack or stack
vent
BTU/H - ANS-The listed maximum capacity of an appliance, absorption unit or burner
expressed in British thermal units input per hour
Building drain - ANS-The lowest piping that collects the discharge from all other drainage piping
and extends 30 inches beyond the exterior walls and conveys the drainage to the sewer
Built-up roof covering - ANS-Two or more layers of felt cemented together and surfaced with a
cap sheet
Chimney - ANS-A primary vertical structure containing one or more flues, for the purpose of
carrying gaseous products of combustion and air from a fuel-burning appliance to the outside
Chimney connector - ANS-A pipe that connects a fuel-burning appliance to a chimney
Circuit vent - ANS-A vent that connects to a horizontal drainage branch and vents two traps to
not more than eight traps or trapped fixtures connected into a battery
Cladding - ANS-The exterior materials that cover the surface of the building envelope that is
directly loaded by the wind
Cleanout - ANS-An access opening in the drainage system utilized for the removal of
obstructions
Collection pipe - ANS-Unpressurized pipe used within the collection system that drains on-site
nonpotable water to a storage tank by gravity
Combination waste and vent system - ANS-A specially designed system of waste piping
embodying the horizontal wet venting of one or more sinks, lavatories or floor drains by means
of a common waste and vent pipe
Convector - ANS-A system in which air enters an opening below the heating element, is heated
and leaves the enclosure through an opening located above the heating element
Dalle glass - ANS-A decorative composite glazing material made of individual pieces of glass
that are embedded in a cast matrix of concrete or epoxy.
Dead loads - ANS-The weight of the materials of construction incorporated into the building
with correct Answers A+ Graded 100%
Verified
Air admittance valve - ANS-A one-way valve designed to allow air into the plumbing drainage
system where a negative pressure develops in the piping.
Air circulation, forced - ANS-A means of providing space conditioning utilizing movement of air
through ducts or plenums by mechanical means
Air-conditioning system - ANS-A system that consists of heat exchangers, blowers, filters,
supply, exhaust and return-air systems
Air-impermeable insulation - ANS-An insulation having an air permanence equal to or less than
0.02
Antisiphon - ANS-A term applied to valves or mechanical devices that eliminate siphonage.
Backflow - ANS-the flow of water or other liquids, mixtures or substances
into the distributing pipes of a potable supply of water from any source other than from its
intended source.
Backflow preventer - ANS-Prevents backflow into the potable water supply
Backsiphonage - ANS-The flowing back of used or contaminated water from piping into a
potable water-supply pipe due to a negative pressure in such pipe
Boiler - ANS-A self-contained appliance from which hot water is circulated for heating purposes
and then returned to the boiler
- Water temps not exceeding 250 degrees F
Braced wall line - ANS-A straight line through the building plan that represents the location of
the lateral resistance provided by the wall bracing
Branch - ANS-Any part of the piping system other than a riser, main or stack
, Branch, main - ANS-A water-distribution pipe that extends horizontally off a main or riser to
convey water to branches or fixture groups
Branch, vent - ANS-A vent connecting two or more individual vents with a vent stack or stack
vent
BTU/H - ANS-The listed maximum capacity of an appliance, absorption unit or burner
expressed in British thermal units input per hour
Building drain - ANS-The lowest piping that collects the discharge from all other drainage piping
and extends 30 inches beyond the exterior walls and conveys the drainage to the sewer
Built-up roof covering - ANS-Two or more layers of felt cemented together and surfaced with a
cap sheet
Chimney - ANS-A primary vertical structure containing one or more flues, for the purpose of
carrying gaseous products of combustion and air from a fuel-burning appliance to the outside
Chimney connector - ANS-A pipe that connects a fuel-burning appliance to a chimney
Circuit vent - ANS-A vent that connects to a horizontal drainage branch and vents two traps to
not more than eight traps or trapped fixtures connected into a battery
Cladding - ANS-The exterior materials that cover the surface of the building envelope that is
directly loaded by the wind
Cleanout - ANS-An access opening in the drainage system utilized for the removal of
obstructions
Collection pipe - ANS-Unpressurized pipe used within the collection system that drains on-site
nonpotable water to a storage tank by gravity
Combination waste and vent system - ANS-A specially designed system of waste piping
embodying the horizontal wet venting of one or more sinks, lavatories or floor drains by means
of a common waste and vent pipe
Convector - ANS-A system in which air enters an opening below the heating element, is heated
and leaves the enclosure through an opening located above the heating element
Dalle glass - ANS-A decorative composite glazing material made of individual pieces of glass
that are embedded in a cast matrix of concrete or epoxy.
Dead loads - ANS-The weight of the materials of construction incorporated into the building
