Az ROC Trade Exam B-3 License
UPDATED Exam Questions and
CORRECT Answers
Nails used for installing Hardboard panel siding vertically must accommodate the sheathing
and penetrate the framing a minimum of how much? - CORRECT ANSWER- 1-1/2 inches
When framing openings in floors with a header and trimmer joists, what maximum header
joist span is allowed with a single member header? - CORRECT ANSWER- 4 feet
Above the handrail and below the head, what is the minimum clear opening on a stairwell? -
CORRECT ANSWER- 36 inches
When installing vinyl siding, how much overlap should you allow for thermal expansion? -
CORRECT ANSWER- 1 inch
What is the first step you should take when applying specialty finishes? - CORRECT
ANSWER- Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround? - CORRECT
ANSWER- 1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required for a
given rating. - CORRECT ANSWER- Density.
What is the most important factor in determining the "R" value of blown in insulation? -
CORRECT ANSWER- Density.
Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), What are the lengths of the second floor trusses? - CORRECT ANSWER- 30 feet
6 inches and 13 feet 5 inches.
,Refer tot the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), what is the height of the foyer in inches? - CORRECT ANSWER- inches.
A ____________ is a system component that receives the inputs from automatic and manual
fire alarm devices and may be capable of supplying power to the detection devices and
transponders or off-premises transmitters. - CORRECT ANSWER- Fire Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of: -
CORRECT ANSWER- The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - CORRECT
ANSWER- 6 inches.
Which of the following is the most important when deciding the depth of a footing? -
CORRECT ANSWER- Depth of the frost line.
Refer tot the illustration of a 2 story house w/ lap siding plans, (available at the testing center)
How many acres is the site for the house plan? - CORRECT ANSWER- 1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - CORRECT ANSWER- Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many PSI? -
CORRECT ANSWER- 3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for foundations?
- CORRECT ANSWER- Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing value? -
CORRECT ANSWER- 3,000 PSF
According to code, what is the minimum required width of a footing in soil rated at 2000 PSF
for a single story building with 8 inch thick masonry walls? - CORRECT ANSWER- 12
inches
, What is the minimum footing width of a one story light-frame construction building? -
CORRECT ANSWER- 12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - CORRECT ANSWER- Early drying due to late curing or excessive water on
surface.
Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), How many cubic yards of concrete is needed for the floor and garage slabs less
the fireplace area? - CORRECT ANSWER- 23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly on the
ground shall be ___________ inches. - CORRECT ANSWER- 3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)? - CORRECT ANSWER- 2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing? -
CORRECT ANSWER- Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum of
___________ feet. - CORRECT ANSWER- 10
What is the minimum overlap of a vapor barrier in an unvented crawl space. - CORRECT
ANSWER- 6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______. -
CORRECT ANSWER- 12 inches
According to code, footings shall be stepped when? - CORRECT ANSWER- If the ground
surface slopes more than on unit vertical to ten units horizontal or where necessary to change
the top footing surface elevation.
What is the minimum concrete psi that is required for basement walls or slabs not exposed to
weather? - CORRECT ANSWER- 2500 psi
UPDATED Exam Questions and
CORRECT Answers
Nails used for installing Hardboard panel siding vertically must accommodate the sheathing
and penetrate the framing a minimum of how much? - CORRECT ANSWER- 1-1/2 inches
When framing openings in floors with a header and trimmer joists, what maximum header
joist span is allowed with a single member header? - CORRECT ANSWER- 4 feet
Above the handrail and below the head, what is the minimum clear opening on a stairwell? -
CORRECT ANSWER- 36 inches
When installing vinyl siding, how much overlap should you allow for thermal expansion? -
CORRECT ANSWER- 1 inch
What is the first step you should take when applying specialty finishes? - CORRECT
ANSWER- Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround? - CORRECT
ANSWER- 1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required for a
given rating. - CORRECT ANSWER- Density.
What is the most important factor in determining the "R" value of blown in insulation? -
CORRECT ANSWER- Density.
Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), What are the lengths of the second floor trusses? - CORRECT ANSWER- 30 feet
6 inches and 13 feet 5 inches.
,Refer tot the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), what is the height of the foyer in inches? - CORRECT ANSWER- inches.
A ____________ is a system component that receives the inputs from automatic and manual
fire alarm devices and may be capable of supplying power to the detection devices and
transponders or off-premises transmitters. - CORRECT ANSWER- Fire Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of: -
CORRECT ANSWER- The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - CORRECT
ANSWER- 6 inches.
Which of the following is the most important when deciding the depth of a footing? -
CORRECT ANSWER- Depth of the frost line.
Refer tot the illustration of a 2 story house w/ lap siding plans, (available at the testing center)
How many acres is the site for the house plan? - CORRECT ANSWER- 1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - CORRECT ANSWER- Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many PSI? -
CORRECT ANSWER- 3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for foundations?
- CORRECT ANSWER- Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing value? -
CORRECT ANSWER- 3,000 PSF
According to code, what is the minimum required width of a footing in soil rated at 2000 PSF
for a single story building with 8 inch thick masonry walls? - CORRECT ANSWER- 12
inches
, What is the minimum footing width of a one story light-frame construction building? -
CORRECT ANSWER- 12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - CORRECT ANSWER- Early drying due to late curing or excessive water on
surface.
Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), How many cubic yards of concrete is needed for the floor and garage slabs less
the fireplace area? - CORRECT ANSWER- 23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly on the
ground shall be ___________ inches. - CORRECT ANSWER- 3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)? - CORRECT ANSWER- 2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing? -
CORRECT ANSWER- Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum of
___________ feet. - CORRECT ANSWER- 10
What is the minimum overlap of a vapor barrier in an unvented crawl space. - CORRECT
ANSWER- 6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______. -
CORRECT ANSWER- 12 inches
According to code, footings shall be stepped when? - CORRECT ANSWER- If the ground
surface slopes more than on unit vertical to ten units horizontal or where necessary to change
the top footing surface elevation.
What is the minimum concrete psi that is required for basement walls or slabs not exposed to
weather? - CORRECT ANSWER- 2500 psi
