1
Az ROC Trade Exam B-3 License UPDATED Exam
Questions and CORRECT Answers 2025
Nails used for installing Hardboard panel siding vertically must accommodate the
sheathing and penetrate the framing a minimum of how much? - (answers)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? - (answers)4
feet
Above the handrail and below the head, what is the minimum clear opening on a
stairwell? - (answers)36 inches
When installing vinyl siding, how much overlap should you allow for thermal
expansion? - (answers)1 inch
What is the first step you should take when applying specialty finishes? -
(answers)Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround? -
(answers)1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness
required for a given rating. - (answers)Density.
, 2
What is the most important factor in determining the "R" value of blown in
insulation? - (answers)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? -
(answers)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? -
(answers)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. - (answers)Fire
Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the
elevation of: - (answers)The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - (answers)6
inches.
Which of the following is the most important when deciding the depth of a
footing? - (answers)Depth of the frost line.
, 3
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? - (answers)1/3
acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - (answers)Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how
many PSI? - (answers)3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations? - (answers)Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing
value? - (answers)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? -
(answers)12 inches
What is the minimum footing width of a one story light-frame construction
building? - (answers)12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - (answers)Early drying due to late curing or excessive water on surface.
, 4
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? - (answers)23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported
directly on the ground shall be ___________ inches. - (answers)3.5
According to the code, plain concrete for basement walls and foundations shall be
what minimum compressive strength (psi)? - (answers)2500 psi
the frost line is 24 inches below the surface. What is the required depth of a
footing? - (answers)Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a
minimum of ___________ feet. - (answers)10
What is the minimum overlap of a vapor barrier in an unvented crawl space. -
(answers)6 inches
The minimum dept of footings below the undisturbed ground surface shall
be_______. - (answers)12 inches
Az ROC Trade Exam B-3 License UPDATED Exam
Questions and CORRECT Answers 2025
Nails used for installing Hardboard panel siding vertically must accommodate the
sheathing and penetrate the framing a minimum of how much? - (answers)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? - (answers)4
feet
Above the handrail and below the head, what is the minimum clear opening on a
stairwell? - (answers)36 inches
When installing vinyl siding, how much overlap should you allow for thermal
expansion? - (answers)1 inch
What is the first step you should take when applying specialty finishes? -
(answers)Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround? -
(answers)1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness
required for a given rating. - (answers)Density.
, 2
What is the most important factor in determining the "R" value of blown in
insulation? - (answers)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? -
(answers)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? -
(answers)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. - (answers)Fire
Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the
elevation of: - (answers)The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - (answers)6
inches.
Which of the following is the most important when deciding the depth of a
footing? - (answers)Depth of the frost line.
, 3
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? - (answers)1/3
acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - (answers)Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how
many PSI? - (answers)3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations? - (answers)Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing
value? - (answers)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? -
(answers)12 inches
What is the minimum footing width of a one story light-frame construction
building? - (answers)12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - (answers)Early drying due to late curing or excessive water on surface.
, 4
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? - (answers)23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported
directly on the ground shall be ___________ inches. - (answers)3.5
According to the code, plain concrete for basement walls and foundations shall be
what minimum compressive strength (psi)? - (answers)2500 psi
the frost line is 24 inches below the surface. What is the required depth of a
footing? - (answers)Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a
minimum of ___________ feet. - (answers)10
What is the minimum overlap of a vapor barrier in an unvented crawl space. -
(answers)6 inches
The minimum dept of footings below the undisturbed ground surface shall
be_______. - (answers)12 inches
