CR 42 EXAM 330 QUESTIONS & CORRECT ANSWERS
LATEST 2025
What is the minimum exposure on a 24 inch wood shingle?
A)5-1/2 inches
B)6-1/2 inches
C) 4 inches
D)5 inches - ANSWER-5 inches
Which of the following locations would NOT typically have an expansion joint on a
built up roof?
A)every 100 lineal feet of roof
B)where substantial temperature variations occur in the occupancy below the
roof
C)at new additions to an existing roof
D)where the roof intersects a vertical wall - ANSWER-Every 100 lineal feet of roof
What is the ASTM code for spray on poly roof system?
A)ASTM D 1026
B)ASTM C 1142
C)ASTM C 1029
D)ASTM D 1114 - ANSWER-ASTM C 1029
,Which of the following would NOT be an appropriate deck material for an asphalt
shingle roof?
A)1" x 6" solid
B)1" x 6" spaced
C)solid wood planking
D)plywood - ANSWER-1" x 6" spaced
Asphalt is applied to a roof at an approximate temperature of ________degrees.
A)225 - 250
B)185 - 225
C)375 - 425
D)325 - 375 - ANSWER-375 - 425
An asphalt shingle should be ________the drip edge or fascia.
A)1/4 inch to 3/8 inch below
B)1/4 inch above
C)1/2 inch below
D)even with - ANSWER-1/4 inch to 3/8 inch below
How do you leave an open roof at the end of the day?
A)finish with broom
B)backnail it
C)install a Cant strip
D)install temporary water Cut-offs - ANSWER-install temporary water Cut-offs
,Brooming may be required while workers lay down glass fiber felts on a built up
roof when the weather is:
A)cloudy.
B)windy.
C)hot.
D)cold. - ANSWER-Windy.
The proper way to store hot applied membrane materials is:
A)stacked horizontally without spacers between the rolls.
B)vertically standing on end.
C)stacked horizontally with spacers between the rolls.
D)laid horizontally and staggered. - ANSWER-vertically standing on end.
The minimum pitch for commercial roof with wood SHAKES is
A)2 inches per foot
B)5 inches per foot
C) 4 inches per foot
D)3 inches per foot - ANSWER-4 inches per foot
What classification has the minimum fire rating code?
A)Class C
B)Class A
C)Class B
D)Class D - ANSWER-Class C
, OSHA regulations state that employees shall not be permitted to work on
scaffolds:
A)Used in stormy or windy weather
B)Used in extreme cold
C)three times higher than the least width of the base
D)five times higher than the least width of the base - ANSWER-Used in stormy or
windy weather
In climates where there are temperatures of 25 degrees or below, what is the
minimum distance that roofing underlayment should extend past the inside wall?
A)6 inches
B) 24 inches
C)18 inches
D) 12 inches - ANSWER-24 inches
How far should the bottom of a 32 foot ladder be from the building?
A)12 feet
B)8 feet
C) 10 feet
D) 6 feet - ANSWER-8 feet
If a panel is not approved by ASTM, but the owner still wants you to use a
corrugated fiberglass panel for a sky light, what kind of slope would you have to
put it on?
A)3:12
B)2:12
LATEST 2025
What is the minimum exposure on a 24 inch wood shingle?
A)5-1/2 inches
B)6-1/2 inches
C) 4 inches
D)5 inches - ANSWER-5 inches
Which of the following locations would NOT typically have an expansion joint on a
built up roof?
A)every 100 lineal feet of roof
B)where substantial temperature variations occur in the occupancy below the
roof
C)at new additions to an existing roof
D)where the roof intersects a vertical wall - ANSWER-Every 100 lineal feet of roof
What is the ASTM code for spray on poly roof system?
A)ASTM D 1026
B)ASTM C 1142
C)ASTM C 1029
D)ASTM D 1114 - ANSWER-ASTM C 1029
,Which of the following would NOT be an appropriate deck material for an asphalt
shingle roof?
A)1" x 6" solid
B)1" x 6" spaced
C)solid wood planking
D)plywood - ANSWER-1" x 6" spaced
Asphalt is applied to a roof at an approximate temperature of ________degrees.
A)225 - 250
B)185 - 225
C)375 - 425
D)325 - 375 - ANSWER-375 - 425
An asphalt shingle should be ________the drip edge or fascia.
A)1/4 inch to 3/8 inch below
B)1/4 inch above
C)1/2 inch below
D)even with - ANSWER-1/4 inch to 3/8 inch below
How do you leave an open roof at the end of the day?
A)finish with broom
B)backnail it
C)install a Cant strip
D)install temporary water Cut-offs - ANSWER-install temporary water Cut-offs
,Brooming may be required while workers lay down glass fiber felts on a built up
roof when the weather is:
A)cloudy.
B)windy.
C)hot.
D)cold. - ANSWER-Windy.
The proper way to store hot applied membrane materials is:
A)stacked horizontally without spacers between the rolls.
B)vertically standing on end.
C)stacked horizontally with spacers between the rolls.
D)laid horizontally and staggered. - ANSWER-vertically standing on end.
The minimum pitch for commercial roof with wood SHAKES is
A)2 inches per foot
B)5 inches per foot
C) 4 inches per foot
D)3 inches per foot - ANSWER-4 inches per foot
What classification has the minimum fire rating code?
A)Class C
B)Class A
C)Class B
D)Class D - ANSWER-Class C
, OSHA regulations state that employees shall not be permitted to work on
scaffolds:
A)Used in stormy or windy weather
B)Used in extreme cold
C)three times higher than the least width of the base
D)five times higher than the least width of the base - ANSWER-Used in stormy or
windy weather
In climates where there are temperatures of 25 degrees or below, what is the
minimum distance that roofing underlayment should extend past the inside wall?
A)6 inches
B) 24 inches
C)18 inches
D) 12 inches - ANSWER-24 inches
How far should the bottom of a 32 foot ladder be from the building?
A)12 feet
B)8 feet
C) 10 feet
D) 6 feet - ANSWER-8 feet
If a panel is not approved by ASTM, but the owner still wants you to use a
corrugated fiberglass panel for a sky light, what kind of slope would you have to
put it on?
A)3:12
B)2:12
