CSIA 2027 EXAMS SCRIPT ANSWERS AND
QUESTIONS SET A+
✔✔liquid propane produces how many BTUs per ft3 - ✔✔2500 BTUs / ft3
✔✔BTUs from natural gas - ✔✔Natural gas = 1000 BTUs
✔✔height of chimney beyond roof? - ✔✔2 feet above the ridge, measuring from top of
chimney
✔✔what is a B vent pipe - ✔✔1. double wall and aluminum inner liner
2. for gas appliances, listed for B with draft hood
✔✔what is a BW vent - ✔✔1. oval, designed to fit in studded wall cavity
2. originally listed for gas wall furnace
✔✔What are single wall connectors known as? Give measurements? - ✔✔1. known as
the "breech"
2. 6-10" diameter, minimum 24 guage steel
✔✔modern inserts almost always require... - ✔✔a liner to the top (known as a positive
connection)
✔✔vented appliances include... - ✔✔oil, gas, and pellet appliances
(only to be used for venting appliance listed for use with a vent)
✔✔factory built fireplaces consist of...______, _______ & _______ - ✔✔Firebox,
damper, chimney
✔✔corbels should not exceed ______ of the individual masonry unit height; nor
________ its thickness - ✔✔1/2, 1/3
✔✔smoke chamber walls should be the ______ of the firebox? - ✔✔full width
, ✔✔natural draft chimneys shall extend a MINIMUM of ______ ft above any parapet wall
within 10 feet - ✔✔2 feet
✔✔rectangular chimney liners with an aspect ratio greater than 2 to 1 are sized to AT
LEAST _______ the fireplace opening - ✔✔1/8
✔✔a level 2 inspection includes all aspects of level 1 - TRUE or FALSE? - ✔✔TRUE
✔✔How far must a chimney extend above the roofline? - ✔✔3 Feet (and at least 2ft
taller than anything within 10ft)
✔✔Gaps between firestopping and the chimney shall not exceed: - ✔✔1/16"
✔✔Thimbles for chimneys or vent connectors shall be made of either _____ or
________ with a minimum thickness of_________. - ✔✔fireclay, or galvanized steel, 24
gauge
✔✔Round chimney flues shall have a minimum net cross-sectional area of at least
_______ the fireplace opening. - ✔✔one-twelfth (1/12)
✔✔Square chimney flues shall have a minimum net cross-sectional area of at least
_______ the fireplace opening. - ✔✔one-tenth (1/10)
✔✔Rectangular and oval chimney flues with an aspect ratio of LESS THAN 2 to 1 shall
have a minimum net cross-sectional area of at least _______ the fireplace opening. -
✔✔one-tenth (1/10)
✔✔Rectangular and oval chimney flues with an aspect ratio of 2 to 1 OR MORE shall
have a minimum net cross-sectional area of at least _______ the fireplace opening. -
✔✔one-eighth (1/8)
✔✔Exterior unlisted metal chimneys shall have a clearance of not less than ____ from
any combustible. - ✔✔18 inches
✔✔What thickness of steel must a pipe connector be if its diameter is less than 6"? -
✔✔26 gauge (0.019)
✔✔What thickness of steel must a pipe connector be if its diameter is greater than or
equal to 6" to less than or equal to 10"? (≥6 to ≤10) - ✔✔24 gauge (0.024)
✔✔What thickness of steel must a pipe connector be if its diameter is greater than 10"
to less than or equal to 16"? (>10 to ≤16) - ✔✔22 gauge (0.029)
QUESTIONS SET A+
✔✔liquid propane produces how many BTUs per ft3 - ✔✔2500 BTUs / ft3
✔✔BTUs from natural gas - ✔✔Natural gas = 1000 BTUs
✔✔height of chimney beyond roof? - ✔✔2 feet above the ridge, measuring from top of
chimney
✔✔what is a B vent pipe - ✔✔1. double wall and aluminum inner liner
2. for gas appliances, listed for B with draft hood
✔✔what is a BW vent - ✔✔1. oval, designed to fit in studded wall cavity
2. originally listed for gas wall furnace
✔✔What are single wall connectors known as? Give measurements? - ✔✔1. known as
the "breech"
2. 6-10" diameter, minimum 24 guage steel
✔✔modern inserts almost always require... - ✔✔a liner to the top (known as a positive
connection)
✔✔vented appliances include... - ✔✔oil, gas, and pellet appliances
(only to be used for venting appliance listed for use with a vent)
✔✔factory built fireplaces consist of...______, _______ & _______ - ✔✔Firebox,
damper, chimney
✔✔corbels should not exceed ______ of the individual masonry unit height; nor
________ its thickness - ✔✔1/2, 1/3
✔✔smoke chamber walls should be the ______ of the firebox? - ✔✔full width
, ✔✔natural draft chimneys shall extend a MINIMUM of ______ ft above any parapet wall
within 10 feet - ✔✔2 feet
✔✔rectangular chimney liners with an aspect ratio greater than 2 to 1 are sized to AT
LEAST _______ the fireplace opening - ✔✔1/8
✔✔a level 2 inspection includes all aspects of level 1 - TRUE or FALSE? - ✔✔TRUE
✔✔How far must a chimney extend above the roofline? - ✔✔3 Feet (and at least 2ft
taller than anything within 10ft)
✔✔Gaps between firestopping and the chimney shall not exceed: - ✔✔1/16"
✔✔Thimbles for chimneys or vent connectors shall be made of either _____ or
________ with a minimum thickness of_________. - ✔✔fireclay, or galvanized steel, 24
gauge
✔✔Round chimney flues shall have a minimum net cross-sectional area of at least
_______ the fireplace opening. - ✔✔one-twelfth (1/12)
✔✔Square chimney flues shall have a minimum net cross-sectional area of at least
_______ the fireplace opening. - ✔✔one-tenth (1/10)
✔✔Rectangular and oval chimney flues with an aspect ratio of LESS THAN 2 to 1 shall
have a minimum net cross-sectional area of at least _______ the fireplace opening. -
✔✔one-tenth (1/10)
✔✔Rectangular and oval chimney flues with an aspect ratio of 2 to 1 OR MORE shall
have a minimum net cross-sectional area of at least _______ the fireplace opening. -
✔✔one-eighth (1/8)
✔✔Exterior unlisted metal chimneys shall have a clearance of not less than ____ from
any combustible. - ✔✔18 inches
✔✔What thickness of steel must a pipe connector be if its diameter is less than 6"? -
✔✔26 gauge (0.019)
✔✔What thickness of steel must a pipe connector be if its diameter is greater than or
equal to 6" to less than or equal to 10"? (≥6 to ≤10) - ✔✔24 gauge (0.024)
✔✔What thickness of steel must a pipe connector be if its diameter is greater than 10"
to less than or equal to 16"? (>10 to ≤16) - ✔✔22 gauge (0.029)
