3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
ASPE CPD Study Questions AH Exam Complete
Test , Practice Questions, Verified Answer Key,
and Study Guide for (Latest 2026 Edition)
Save
Terms in this set (358)
Front Back
What is the specific weight of water? 62.4 lbs per cubic foot
What happens in a storm and A smoke pressure test is recommended with a
sanitary system after it passes the smoke pressure of 1 in wc to prove the system gas
water test? tight.
Is an air test acceptable for a storm Yes, if a water test is not possible, at a pressure of 5
and sanitary system? psi, are tests are impractical and costly
What are the testing procedures for A water test upon completion of the rough piping
the storm and sanitary system? and prior to concealment of 10 ft wc minimum
(except the topmost 10 feet of pipe), not to exceed
100 ft wc. If system is higher than 100 feet, test
plugs must be installed to facilitate testing, rarely
are more than 7 stories tested at one time. A
peppermint oil test may also be done with 2 oz of
peppermint oil and 10 qt boiling water, and
searching for peppermint smell at leaks, however it
is difficult to pinpoint the leak by this method
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 1/57
,3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
The maximum length from the vent To prevent a dead end where slime, sludge and
connection to any future drain outlet fungi can grow, 2 feet, unless the piping must be
is required by code, why, how long is extended to an accessible location for a cleanout
the distance (listed in the book), and
what’s the exception?
A sanitary tee may be used in the A double sanitary tee because the possibility of
vertical but what may not be used in flow crossover and excessive pressures when one
the vertical and why? branch is discharging and the other isn’t are
possible
What are the slopes of pipe inside 1/4 in per foot for 3 in and smaller 1/8 in per foot for
the building that correspond to 2 fps larger pipe all elbows, taps, tees etc are tapped at
velocity? a pitch of 1/4” per foot
Where should cleanouts be 1) Inside or outside the building at the point of exit
provided? (use a wye branch) 2) at every change in direction
greater than 45 degrees 3) every 50 feet for piping
4” and less, and 100 ft for larger piping 4)
underground piping larger than 10 in should be
provided with manholes at every change in
direction and every 150 feet 5) at the base of all
stacks 6) as required by code
What size cleanouts are provided in Piping up to 4 inches, the cleanout is the same size
piping? as the pipe. Piping greater than 4 inches, 4 inch
cleanouts are adequate.
What should be installed in the A backwater valve or a combination BWV with
house drain if there is a danger of manually operated gate valve. The BWV does not
backflow of sewage into the interfere with the airflow throughout the system,
building? Whats the difference? and the gate valve is recommended where there is
a history of backflow as a positive means of
protection.
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 2/57
,3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
Branch connections to the house At the upper portion of the pipe (above the 1/2 -
drain should be made where and 2/3 full mark) because: 1) there is a lower chance of
why? stoppages in the branch 2) there is less flow
interference at the point of connection 3) When
there is no flow in the branch, the full area of the
pipe is available to relieve pneumatic pressure
fluctuations in the house drain
How many fixture units are 2 FUs, sump pumps, ejectors, air conditioning
equivalent to 1 gpm continuous or equipment, water cooled, equipment, etc
semicontinuous flow and what are
examples of these types of flow?
What minimum slopes are required 3 in pipe and smaller: 1/4 in/ft 4-6 in pipe: 1/8 in/ft 8
for building drains and why? in pipe and larger: 1/16 in/ft to maintain 2 fps
scouring action if low flow fixtures are present, 1/4
in/ft for all is a good idea
House drains are designed to flow 1/2 full to 3/4 full max under uniform flow
how full? conditions
What is a house (building) drain? The lowest piping of a gravity drainage system that
receives the discharge from soil, waste, and other
drainage pipes inside the building that extends a
short distance from the building and conveys the
drainage to the building sewer
What is the measurement from 45 degrees
horizontal that separates horizontal
and vertical drainage stacks?
Does an interior drainage stack that No. Any more than a 45 degree offset requires
offsets 45 degrees or less from the sizing the offset as a house drain.
vertical require a change in size?
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 3/57
, 3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
What is a branch interval? A building story or a distance between two branch
connections greater than 8 feet apart.
Describe the procedure for sizing 1) First size the horizontal branches connecting to
interior drainage stacks. the stack 2) Determine the minimum size that will
accept each branch at one branch interval 3) Total
all fixture units connected to the stack, and
determine the size. The minimum size must be at
least equal to the largest diameter required at the
base. You may reduce in size at upper branch
intervals, but never by more than 1/2 the largest
size.
What is the total recommended 7/24 of the total cross sectional area of the stack.
maximum permissible flow in a
stack?
Where should and shouldn’t you Not to the horizontal offset to the stack if at all
connect branch connections to stack possible, unless its at least 10 pipe diameters
offsets? downstream, and ideally 2 feet above the offset or
2 feet below to avoid pressure fluctuations.
What can minimize hydraulic jump? Increasing the slope of the horizontal drain.
Connecting to a horizontal drain that is larger than
the stack.
Any offset of the stack greater than 45 degrees
what can cause hydraulic jump?
When does terminal velocity occur in It is achieved at approximately 10 - 15 fps and this
a drainage stack? velocity is achieved within 10 - 15 feet of fall from
the point of entry.
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 4/57
ASPE CPD Study Questions AH Exam Complete
Test , Practice Questions, Verified Answer Key,
and Study Guide for (Latest 2026 Edition)
Save
Terms in this set (358)
Front Back
What is the specific weight of water? 62.4 lbs per cubic foot
What happens in a storm and A smoke pressure test is recommended with a
sanitary system after it passes the smoke pressure of 1 in wc to prove the system gas
water test? tight.
Is an air test acceptable for a storm Yes, if a water test is not possible, at a pressure of 5
and sanitary system? psi, are tests are impractical and costly
What are the testing procedures for A water test upon completion of the rough piping
the storm and sanitary system? and prior to concealment of 10 ft wc minimum
(except the topmost 10 feet of pipe), not to exceed
100 ft wc. If system is higher than 100 feet, test
plugs must be installed to facilitate testing, rarely
are more than 7 stories tested at one time. A
peppermint oil test may also be done with 2 oz of
peppermint oil and 10 qt boiling water, and
searching for peppermint smell at leaks, however it
is difficult to pinpoint the leak by this method
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 1/57
,3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
The maximum length from the vent To prevent a dead end where slime, sludge and
connection to any future drain outlet fungi can grow, 2 feet, unless the piping must be
is required by code, why, how long is extended to an accessible location for a cleanout
the distance (listed in the book), and
what’s the exception?
A sanitary tee may be used in the A double sanitary tee because the possibility of
vertical but what may not be used in flow crossover and excessive pressures when one
the vertical and why? branch is discharging and the other isn’t are
possible
What are the slopes of pipe inside 1/4 in per foot for 3 in and smaller 1/8 in per foot for
the building that correspond to 2 fps larger pipe all elbows, taps, tees etc are tapped at
velocity? a pitch of 1/4” per foot
Where should cleanouts be 1) Inside or outside the building at the point of exit
provided? (use a wye branch) 2) at every change in direction
greater than 45 degrees 3) every 50 feet for piping
4” and less, and 100 ft for larger piping 4)
underground piping larger than 10 in should be
provided with manholes at every change in
direction and every 150 feet 5) at the base of all
stacks 6) as required by code
What size cleanouts are provided in Piping up to 4 inches, the cleanout is the same size
piping? as the pipe. Piping greater than 4 inches, 4 inch
cleanouts are adequate.
What should be installed in the A backwater valve or a combination BWV with
house drain if there is a danger of manually operated gate valve. The BWV does not
backflow of sewage into the interfere with the airflow throughout the system,
building? Whats the difference? and the gate valve is recommended where there is
a history of backflow as a positive means of
protection.
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 2/57
,3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
Branch connections to the house At the upper portion of the pipe (above the 1/2 -
drain should be made where and 2/3 full mark) because: 1) there is a lower chance of
why? stoppages in the branch 2) there is less flow
interference at the point of connection 3) When
there is no flow in the branch, the full area of the
pipe is available to relieve pneumatic pressure
fluctuations in the house drain
How many fixture units are 2 FUs, sump pumps, ejectors, air conditioning
equivalent to 1 gpm continuous or equipment, water cooled, equipment, etc
semicontinuous flow and what are
examples of these types of flow?
What minimum slopes are required 3 in pipe and smaller: 1/4 in/ft 4-6 in pipe: 1/8 in/ft 8
for building drains and why? in pipe and larger: 1/16 in/ft to maintain 2 fps
scouring action if low flow fixtures are present, 1/4
in/ft for all is a good idea
House drains are designed to flow 1/2 full to 3/4 full max under uniform flow
how full? conditions
What is a house (building) drain? The lowest piping of a gravity drainage system that
receives the discharge from soil, waste, and other
drainage pipes inside the building that extends a
short distance from the building and conveys the
drainage to the building sewer
What is the measurement from 45 degrees
horizontal that separates horizontal
and vertical drainage stacks?
Does an interior drainage stack that No. Any more than a 45 degree offset requires
offsets 45 degrees or less from the sizing the offset as a house drain.
vertical require a change in size?
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 3/57
, 3/24/26, 8:12 AM ASPE CPD Study Questions AH Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 …
What is a branch interval? A building story or a distance between two branch
connections greater than 8 feet apart.
Describe the procedure for sizing 1) First size the horizontal branches connecting to
interior drainage stacks. the stack 2) Determine the minimum size that will
accept each branch at one branch interval 3) Total
all fixture units connected to the stack, and
determine the size. The minimum size must be at
least equal to the largest diameter required at the
base. You may reduce in size at upper branch
intervals, but never by more than 1/2 the largest
size.
What is the total recommended 7/24 of the total cross sectional area of the stack.
maximum permissible flow in a
stack?
Where should and shouldn’t you Not to the horizontal offset to the stack if at all
connect branch connections to stack possible, unless its at least 10 pipe diameters
offsets? downstream, and ideally 2 feet above the offset or
2 feet below to avoid pressure fluctuations.
What can minimize hydraulic jump? Increasing the slope of the horizontal drain.
Connecting to a horizontal drain that is larger than
the stack.
Any offset of the stack greater than 45 degrees
what can cause hydraulic jump?
When does terminal velocity occur in It is achieved at approximately 10 - 15 fps and this
a drainage stack? velocity is achieved within 10 - 15 feet of fall from
the point of entry.
https://quizlet.com/1159643988/aspe-cpd-study-questions-ah-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-… 4/57
