Massachusetts Construction Supervisor
License (CSL) Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant
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1. What is the minimum ceiling height for habitable rooms as required by
the Massachusetts State Building Code?
A. 6 feet 8 inches
B. 7 feet
C. 7 feet 6 inches
D. 6 feet 6 inches
The minimum ceiling height for habitable rooms is 7 feet according to the
Massachusetts Residential Code (780 CMR 51.00).
2. What is the required minimum tread depth for residential stairways?
A. 9 inches
B. 10 inches
C. 10 inches minimum, measured horizontally
D. 11 inches
,The code requires a minimum tread depth of 10 inches for safety and
consistency in residential stairways.
3. A handrail must be installed on stairs with how many risers?
A. 2 or more
B. 3 or more
C. 4 or more
D. 5 or more
Stairs with four or more risers must have at least one handrail for safety
purposes.
4. What is the maximum riser height allowed on residential stairs?
A. 6 ½ inches
B. 7 ¾ inches
C. 8 inches
D. 8 ¼ inches
Residential stair risers must not exceed 7 ¾ inches according to the
Massachusetts Residential Code.
5. How many inches must a guardrail be in height on decks more than 30
inches above grade?
A. 30 inches
B. 34 inches
C. 36 inches
D. 42 inches
Guardrails must be a minimum of 36 inches high when a deck is more than
30 inches above grade.
6. What is the minimum required width for a hallway in a residential
dwelling?
, A. 30 inches
B. 36 inches
C. 42 inches
D. 48 inches
The code specifies a minimum hallway width of 36 inches for accessibility
and comfort.
7. What type of license is required to build a one- or two-family home in
Massachusetts?
A. Unrestricted CSL
B. Restricted CSL
C. Construction Supervisor License (Restricted)
D. Home Improvement Contractor License
A Restricted CSL is required for one- and two-family dwellings under 35,000
cubic feet.
8. For smoke alarms, which feature is required in new construction?
A. Battery-only power
B. Single-station alarms
C. Photoelectric sensors only
D. Hardwired with battery backup and interconnected
The code requires hardwired, interconnected smoke alarms with battery
backup in new homes.
9. What is the minimum thickness for concrete footings?
A. 6 inches
B. 8 inches
C. 10 inches
D. 12 inches
License (CSL) Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant
Download Pdf
1. What is the minimum ceiling height for habitable rooms as required by
the Massachusetts State Building Code?
A. 6 feet 8 inches
B. 7 feet
C. 7 feet 6 inches
D. 6 feet 6 inches
The minimum ceiling height for habitable rooms is 7 feet according to the
Massachusetts Residential Code (780 CMR 51.00).
2. What is the required minimum tread depth for residential stairways?
A. 9 inches
B. 10 inches
C. 10 inches minimum, measured horizontally
D. 11 inches
,The code requires a minimum tread depth of 10 inches for safety and
consistency in residential stairways.
3. A handrail must be installed on stairs with how many risers?
A. 2 or more
B. 3 or more
C. 4 or more
D. 5 or more
Stairs with four or more risers must have at least one handrail for safety
purposes.
4. What is the maximum riser height allowed on residential stairs?
A. 6 ½ inches
B. 7 ¾ inches
C. 8 inches
D. 8 ¼ inches
Residential stair risers must not exceed 7 ¾ inches according to the
Massachusetts Residential Code.
5. How many inches must a guardrail be in height on decks more than 30
inches above grade?
A. 30 inches
B. 34 inches
C. 36 inches
D. 42 inches
Guardrails must be a minimum of 36 inches high when a deck is more than
30 inches above grade.
6. What is the minimum required width for a hallway in a residential
dwelling?
, A. 30 inches
B. 36 inches
C. 42 inches
D. 48 inches
The code specifies a minimum hallway width of 36 inches for accessibility
and comfort.
7. What type of license is required to build a one- or two-family home in
Massachusetts?
A. Unrestricted CSL
B. Restricted CSL
C. Construction Supervisor License (Restricted)
D. Home Improvement Contractor License
A Restricted CSL is required for one- and two-family dwellings under 35,000
cubic feet.
8. For smoke alarms, which feature is required in new construction?
A. Battery-only power
B. Single-station alarms
C. Photoelectric sensors only
D. Hardwired with battery backup and interconnected
The code requires hardwired, interconnected smoke alarms with battery
backup in new homes.
9. What is the minimum thickness for concrete footings?
A. 6 inches
B. 8 inches
C. 10 inches
D. 12 inches
