Massachusetts CSL Practice Test Questions
with Answers
Question 1
The minimum amount of glazing area required for a habitable room in a single family
dwelling that measures 20 ft. x 30 ft. is ____ square feet
Correct Answer
48
IRC - section R303.1
Question 2
The connection between a pressure treated deck ledger and a 2 inch nominal lumber
band joist in a single family dwelling, bearing on a sill plate or wall, shall be
constructed with a minimum ____ inch lad screw or bolt
Correct Answer
1/2
IRC - section R502.2.2.1
Question 3
What is the minimum required flue size for a rectangular flue in a chimney serving a
fireplace for a single family dwelling with an opening of 500 square inches with a
height of 15 feet?
Correct Answer
8 x 12
IRC - figure R1003.15.2
Page 1 of 28
,Question 4
Which of the following is NOT an effective method of preventing efflorescence?
A. forming good mortar joints
B. using high-early strength cement
C. stocking materials off of the ground
D. covering materials at all times
Correct Answer
B. Using high-early strength cement
class handouts
Question 5
What is the maximum temperature a flue lining used in a residential-type appliance in
a masonry chimney, in a single family dwelling, must resist?
Correct Answer
1,800 degrees F
IRC - section R1003.11.1 #4
Question 6
Which of the following is NOT true regarding the placement of masonry units in a
single family dwelling?
A. mortar shall be plastic
B. surfaces shall be clean and free of deleterious material
C. units where initial bond is broken shall be removes and relaid
D. deep furrowing of bed joints
Correct Answer
D. Deep furrowing of bed joints
IRC - section 607.2.2
Page 2 of 28
, Question 7
What is the minimum required thickness of a mortar joint in a masonry unit wall in a
one or two family dwelling?
Correct Answer
3/8 inch
IRC - section R607.2.1
Question 8
In a single family dwelling with an 8:12 roof pitch and a cricket hight of 12 inches,
what is the width of the cricket?
Correct Answer
36 inches
IRC - table R1003.20
Question 9
Which of the following is NOT true regarding masonry chimneys in a one or two
family dwelling?
A. chimneys may support additional loads if designed to do so
B. must extend a minimum of 3 feet above highest point where passing through roof
C. chimneys may be unlined
D. walls must be a minimum of 4 inches in thickness
Correct Answer
C. chimneys may be unlined
IRC - section R1003.11
Question 10
What is the diameter of a #6 re-bar?
Correct Answer
3/4 inch
handouts
Page 3 of 28
with Answers
Question 1
The minimum amount of glazing area required for a habitable room in a single family
dwelling that measures 20 ft. x 30 ft. is ____ square feet
Correct Answer
48
IRC - section R303.1
Question 2
The connection between a pressure treated deck ledger and a 2 inch nominal lumber
band joist in a single family dwelling, bearing on a sill plate or wall, shall be
constructed with a minimum ____ inch lad screw or bolt
Correct Answer
1/2
IRC - section R502.2.2.1
Question 3
What is the minimum required flue size for a rectangular flue in a chimney serving a
fireplace for a single family dwelling with an opening of 500 square inches with a
height of 15 feet?
Correct Answer
8 x 12
IRC - figure R1003.15.2
Page 1 of 28
,Question 4
Which of the following is NOT an effective method of preventing efflorescence?
A. forming good mortar joints
B. using high-early strength cement
C. stocking materials off of the ground
D. covering materials at all times
Correct Answer
B. Using high-early strength cement
class handouts
Question 5
What is the maximum temperature a flue lining used in a residential-type appliance in
a masonry chimney, in a single family dwelling, must resist?
Correct Answer
1,800 degrees F
IRC - section R1003.11.1 #4
Question 6
Which of the following is NOT true regarding the placement of masonry units in a
single family dwelling?
A. mortar shall be plastic
B. surfaces shall be clean and free of deleterious material
C. units where initial bond is broken shall be removes and relaid
D. deep furrowing of bed joints
Correct Answer
D. Deep furrowing of bed joints
IRC - section 607.2.2
Page 2 of 28
, Question 7
What is the minimum required thickness of a mortar joint in a masonry unit wall in a
one or two family dwelling?
Correct Answer
3/8 inch
IRC - section R607.2.1
Question 8
In a single family dwelling with an 8:12 roof pitch and a cricket hight of 12 inches,
what is the width of the cricket?
Correct Answer
36 inches
IRC - table R1003.20
Question 9
Which of the following is NOT true regarding masonry chimneys in a one or two
family dwelling?
A. chimneys may support additional loads if designed to do so
B. must extend a minimum of 3 feet above highest point where passing through roof
C. chimneys may be unlined
D. walls must be a minimum of 4 inches in thickness
Correct Answer
C. chimneys may be unlined
IRC - section R1003.11
Question 10
What is the diameter of a #6 re-bar?
Correct Answer
3/4 inch
handouts
Page 3 of 28
