AZ ROC TRADE EXAM QUESTIONS WITH
VERIFIED ANSWERS
Nails used for installing Hardboard panel siding vertically must accommodate the
sheathing and penetrate the framing a minimum of how much?
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?
4 feet
Above the handrail and below the head, what is the minimum clear opening on a stairwell?
36 inches
When installing vinyl siding, how much overlap should you allow for thermal expansion?
1 inch
What is the first step you should take when applying specialty finishes?
Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround?
1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required for
a given rating.
Density.
What is the most important factor in determining the "R" value of blown in insulation?
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?
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?
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.
,Fire Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of:
The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence?
6 inches.
Which of the following is the most important when deciding the depth of a footing?
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?
1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted?
Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many PSI?
3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations?
Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing value?
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?
12 inches
What is the minimum footing width of a one story light-frame construction building?
12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete?
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?
, 23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly on
the ground shall be ___________ inches.
3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)?
2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing?
Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum of
___________ feet.
10
What is the minimum overlap of a vapor barrier in an unvented crawl space.
6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______.
12 inches
According to code, footings shall be stepped when?
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?
2500 psi
Refer to the illustration of a 2 story house w/ lap siddng plans, (complete set of plans at the
test center), How many cubic yards of concrete would be required for the footer only?
10 to 12 cubic yards.
In conventional light-frame construction on soil with a load bearing value of 2,000 psi for a
one story building with 8 inch hollow concrete masonry walls, what is the minimum
thickness of the spread footing?
6 inches
Concrete Spread footing projections shall be at least ___________ and shall not exceed the
thickness of the footings.
VERIFIED ANSWERS
Nails used for installing Hardboard panel siding vertically must accommodate the
sheathing and penetrate the framing a minimum of how much?
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?
4 feet
Above the handrail and below the head, what is the minimum clear opening on a stairwell?
36 inches
When installing vinyl siding, how much overlap should you allow for thermal expansion?
1 inch
What is the first step you should take when applying specialty finishes?
Read the manufacturers use instructions.
What is the appropriate gap between gypsum board and a tub surround?
1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required for
a given rating.
Density.
What is the most important factor in determining the "R" value of blown in insulation?
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?
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?
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.
,Fire Alarm Control Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of:
The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence?
6 inches.
Which of the following is the most important when deciding the depth of a footing?
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?
1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted?
Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many PSI?
3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations?
Organic Silt
The soil report states that the soil is sandy-gravel. What is the soil's load-bearing value?
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?
12 inches
What is the minimum footing width of a one story light-frame construction building?
12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete?
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?
, 23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly on
the ground shall be ___________ inches.
3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)?
2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing?
Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum of
___________ feet.
10
What is the minimum overlap of a vapor barrier in an unvented crawl space.
6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______.
12 inches
According to code, footings shall be stepped when?
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?
2500 psi
Refer to the illustration of a 2 story house w/ lap siddng plans, (complete set of plans at the
test center), How many cubic yards of concrete would be required for the footer only?
10 to 12 cubic yards.
In conventional light-frame construction on soil with a load bearing value of 2,000 psi for a
one story building with 8 inch hollow concrete masonry walls, what is the minimum
thickness of the spread footing?
6 inches
Concrete Spread footing projections shall be at least ___________ and shall not exceed the
thickness of the footings.
