CR-42 EXAM WITH ALL CORRECT &
VERIFIED ANSWERS (UPDATED TO PASS)
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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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. Correct 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. Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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
C)5:12
D)4:12 Correct answer-4:12
All these except for one is a factor in designing a pitch roof?
A)walk load
B)wind load
C)hydropressure up-lift
D)dead load Correct answer-hydropressure up-lift
,What is the minimum size width for metal flashing used in a valley with asphalt shingles?
A)16 inches
B)10 inches
C)8 inches
D)24 inches Correct answer-24 inches
Which of the following is NOT one of the basic types of shakes?
A)straight split
B)hand spilt and resawn
C)taper split
D)beveled split Correct answer-beveled split
What is the name of the tile used to terminate a course of tile at a gable end on flat tile roof?
A)eave closure
B)tile and half
C)half tile
D)finishers Correct answer-finishers
What method is best to be used to repair wood shakes?
A)?
B)put mortar on rails
C)place metal then bend 90 degrees to hold in place
D)place metal in-between the cracks then felt paper over metal Correct answer-place metal then
bend 90 degrees to hold in place
What is a suitable material for a starter strip when installing asphalt shingles over an existing roof?
A)Wood sheathing
B)15 pound felt underlayment
C)Trimmed asphalt shingles
D)Sheet metal Correct answer-Trimmed asphalt shingles
What is the total number of squares on a flat roof that is 125 feet x 100 feet?
A)100
B)1250
C)125
D)75 Correct answer-125
An eave closure is used on what type of roofing material?
A)asphalt shingles
B) rolled roofing
C)roll tile
D)flat tile Correct answer-roll tile
Given: An employee must work with equipment that is potentially dangerous to the face and eyes.
This employee wears eye glasses. According to OSHA, all of the following are acceptable methods for
providing eye protection EXCEPT:
A)goggles that can be worn over regular glasses
B)regular heavy duty glasses with plastic frames
C)goggles with corrective lenses mounted behind the protective lenses
, D)safety goggles with the optical correction built in Correct answer-regular heavy duty glasses with
plastic frames
Which of the following is a EPDM underlayment requirement when using concrete ballast pavers on
a roof?
A)a separator sheet must be installed
B)pavers must be embedded in bitumen
C)both
D) neither Correct answer-a separator sheet must be installed
According to OSHA, where should the connection point of a safety harness be located?
A)In front near waist line
B)Center of wearer's back near shoulder level
C)In back at the lower back level
D)In front in the middle of the chest Correct answer-Center of wearer's back near shoulder level
In built-up roof applications, what is the term "fish mouth"?
A)type of drain
B)installation irregularity
C)a mopping technique
D) a mechanical fastener Correct answer-installation irregularity
What is the maximum roof slope for clay tile before battens are required?
A)5:12
B)4:12
C)7:12
D)6:12 Correct answer-7:12
If the bitumen in a built up roof system has been mopped in at excessive temperatures, which one of
the following conditions would not likely result?
A)voids between plies
B)light mopping weights
C) a potential lack of water proofing qualities
D)high expansion properties Correct answer-high expansion properties
If you are putting on fascia around a 26 foot by 34 foot home that has a hip roof with 2 foot eaves,
how many pieces of 1 inch x 8 inch by 10 foot fascia board is needed?
A)18
B)12
C)16
D)14 Correct answer-14
Sheet copper for eaves, troughs and corners should be made from:
A)not rolled
B)cold rolled
C)annealed
D)soft copper Correct answer-cold rolled
According to OSHA, a trench that reaches a depth of 4 feet shall be supplied with a ladder or a means
of egress. The maximum lateral distance a person shall travel to reach this ladder shall not exceed
_______feet.
VERIFIED ANSWERS (UPDATED TO PASS)
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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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. Correct 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. Correct 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 Correct 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 Correct 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 Correct 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 Correct 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 Correct 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
C)5:12
D)4:12 Correct answer-4:12
All these except for one is a factor in designing a pitch roof?
A)walk load
B)wind load
C)hydropressure up-lift
D)dead load Correct answer-hydropressure up-lift
,What is the minimum size width for metal flashing used in a valley with asphalt shingles?
A)16 inches
B)10 inches
C)8 inches
D)24 inches Correct answer-24 inches
Which of the following is NOT one of the basic types of shakes?
A)straight split
B)hand spilt and resawn
C)taper split
D)beveled split Correct answer-beveled split
What is the name of the tile used to terminate a course of tile at a gable end on flat tile roof?
A)eave closure
B)tile and half
C)half tile
D)finishers Correct answer-finishers
What method is best to be used to repair wood shakes?
A)?
B)put mortar on rails
C)place metal then bend 90 degrees to hold in place
D)place metal in-between the cracks then felt paper over metal Correct answer-place metal then
bend 90 degrees to hold in place
What is a suitable material for a starter strip when installing asphalt shingles over an existing roof?
A)Wood sheathing
B)15 pound felt underlayment
C)Trimmed asphalt shingles
D)Sheet metal Correct answer-Trimmed asphalt shingles
What is the total number of squares on a flat roof that is 125 feet x 100 feet?
A)100
B)1250
C)125
D)75 Correct answer-125
An eave closure is used on what type of roofing material?
A)asphalt shingles
B) rolled roofing
C)roll tile
D)flat tile Correct answer-roll tile
Given: An employee must work with equipment that is potentially dangerous to the face and eyes.
This employee wears eye glasses. According to OSHA, all of the following are acceptable methods for
providing eye protection EXCEPT:
A)goggles that can be worn over regular glasses
B)regular heavy duty glasses with plastic frames
C)goggles with corrective lenses mounted behind the protective lenses
, D)safety goggles with the optical correction built in Correct answer-regular heavy duty glasses with
plastic frames
Which of the following is a EPDM underlayment requirement when using concrete ballast pavers on
a roof?
A)a separator sheet must be installed
B)pavers must be embedded in bitumen
C)both
D) neither Correct answer-a separator sheet must be installed
According to OSHA, where should the connection point of a safety harness be located?
A)In front near waist line
B)Center of wearer's back near shoulder level
C)In back at the lower back level
D)In front in the middle of the chest Correct answer-Center of wearer's back near shoulder level
In built-up roof applications, what is the term "fish mouth"?
A)type of drain
B)installation irregularity
C)a mopping technique
D) a mechanical fastener Correct answer-installation irregularity
What is the maximum roof slope for clay tile before battens are required?
A)5:12
B)4:12
C)7:12
D)6:12 Correct answer-7:12
If the bitumen in a built up roof system has been mopped in at excessive temperatures, which one of
the following conditions would not likely result?
A)voids between plies
B)light mopping weights
C) a potential lack of water proofing qualities
D)high expansion properties Correct answer-high expansion properties
If you are putting on fascia around a 26 foot by 34 foot home that has a hip roof with 2 foot eaves,
how many pieces of 1 inch x 8 inch by 10 foot fascia board is needed?
A)18
B)12
C)16
D)14 Correct answer-14
Sheet copper for eaves, troughs and corners should be made from:
A)not rolled
B)cold rolled
C)annealed
D)soft copper Correct answer-cold rolled
According to OSHA, a trench that reaches a depth of 4 feet shall be supplied with a ladder or a means
of egress. The maximum lateral distance a person shall travel to reach this ladder shall not exceed
_______feet.
