International Mechanical Code Questions With Accurate
Answers
High Heat Appliance definition - accurate answers-products of combustion
have a temperature greater than 2000F
Brazing melting point - accurate answers-above 1000F
BTU - accurate answers-heat required to heat one pound of water 1F
Class II combustible liquid - accurate answers-closed cup flash point between
100F and <140F
Class IIIA combustible liquid - accurate answers-flash point between 140F and
<200F
Class IIIB combustible liquid - accurate answers-closed cup flash point at or
above 200F
Class i Flammability refrigerants - accurate answers-refrigerants that don't
show flame propigation when tested in 14.7 psia and 70F
Class ii flammability refrigerants - accurate answers-refrigerants with lower
flammability limit of over .00625 lb/ft^3 and a heat of combustion of <8174
btu/lb
Class iii flammability refrigerants - accurate answers-LFL less than or equal
to .00625 lb/ft^3 or a heat of combustion greater than or equal to 8174 btu/lb
Class IA flammable liquid - accurate answers-flash point below 73F and
boiling point below 100F
Class IB flammable liquid - accurate answers-flash point below 73F and
boiling point at or above 100F
Class IC flammable liquid - accurate answers-flash point at or above 73F and
below 100F
, Type I hood - accurate answers-collects and removes grease vapors and
smoke
Type II hood - accurate answers-collects and removes steam, vapor, heat,
odors, and products of combustion
Soldering joint temperature range - accurate answers-melt between 400F and
1000F
Modular boiler input rating - accurate answers-400,000 BTU/h gas
3 GPM gas
115 kW electric
quick opening valve - accurate answers-a valve that requires at 1/4 turn or
less to open
Automatic vent damper device - accurate answers-A device that opens venting
system when appliance is in operation and closes it automatically when
appliance is in standby or shut down
Fuel fired appliance prohibited locations - accurate answers-sleeping rooms,
bathrooms, toilet rooms, storage closets, surgical rooms
Ignition source minimum elevation - accurate answers-18 inches
Louver Free area requirement - accurate answers-Wooden: 25%
Metal: 75%
When is ventilation required - accurate answers-when air infiltration rate in a
dwelling is <5 air changes per hour when tested
Air intake size range in non-residential occupancies - accurate answers-
between (not including) 1/4" and 1"
Ventilation rate of uninhabited spaces - accurate answers-not less than 0.02
CFM per square foot
exhaust opening screen size range - accurate answers-between 1/4" and 1/2"
inclusive
Answers
High Heat Appliance definition - accurate answers-products of combustion
have a temperature greater than 2000F
Brazing melting point - accurate answers-above 1000F
BTU - accurate answers-heat required to heat one pound of water 1F
Class II combustible liquid - accurate answers-closed cup flash point between
100F and <140F
Class IIIA combustible liquid - accurate answers-flash point between 140F and
<200F
Class IIIB combustible liquid - accurate answers-closed cup flash point at or
above 200F
Class i Flammability refrigerants - accurate answers-refrigerants that don't
show flame propigation when tested in 14.7 psia and 70F
Class ii flammability refrigerants - accurate answers-refrigerants with lower
flammability limit of over .00625 lb/ft^3 and a heat of combustion of <8174
btu/lb
Class iii flammability refrigerants - accurate answers-LFL less than or equal
to .00625 lb/ft^3 or a heat of combustion greater than or equal to 8174 btu/lb
Class IA flammable liquid - accurate answers-flash point below 73F and
boiling point below 100F
Class IB flammable liquid - accurate answers-flash point below 73F and
boiling point at or above 100F
Class IC flammable liquid - accurate answers-flash point at or above 73F and
below 100F
, Type I hood - accurate answers-collects and removes grease vapors and
smoke
Type II hood - accurate answers-collects and removes steam, vapor, heat,
odors, and products of combustion
Soldering joint temperature range - accurate answers-melt between 400F and
1000F
Modular boiler input rating - accurate answers-400,000 BTU/h gas
3 GPM gas
115 kW electric
quick opening valve - accurate answers-a valve that requires at 1/4 turn or
less to open
Automatic vent damper device - accurate answers-A device that opens venting
system when appliance is in operation and closes it automatically when
appliance is in standby or shut down
Fuel fired appliance prohibited locations - accurate answers-sleeping rooms,
bathrooms, toilet rooms, storage closets, surgical rooms
Ignition source minimum elevation - accurate answers-18 inches
Louver Free area requirement - accurate answers-Wooden: 25%
Metal: 75%
When is ventilation required - accurate answers-when air infiltration rate in a
dwelling is <5 air changes per hour when tested
Air intake size range in non-residential occupancies - accurate answers-
between (not including) 1/4" and 1"
Ventilation rate of uninhabited spaces - accurate answers-not less than 0.02
CFM per square foot
exhaust opening screen size range - accurate answers-between 1/4" and 1/2"
inclusive
