Az ROC Trade Exam B-3 License UPDATED Exam
Questions and CORRECT Answers
What is the appropriate gap between gypsum board and a tub surround? - ANSWER -
1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required
for a given rating. - ANSWER -Density.
What is the most important factor in determining the "R" value of blown in insulation? -
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? - 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? - 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. - ANSWER -Fire Alarm Control
Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of:
- ANSWER -The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - ANSWER -6
inches.
Which of the following is the most important when deciding the depth of a footing? -
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? - ANSWER -1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - ANSWER -Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many
PSI? - ANSWER -3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations? - ANSWER -Organic Silt
, The soil report states that the soil is sandy-gravel. What is the soil's load-bearing
value? - 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? - ANSWER -12 inches
What is the minimum footing width of a one story light-frame construction building? -
ANSWER -12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - 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? - ANSWER -23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly
on the ground shall be ___________ inches. - ANSWER -3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)? - ANSWER -2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing? -
ANSWER -Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum
of ___________ feet. - ANSWER -10
What is the minimum overlap of a vapor barrier in an unvented crawl space. -
ANSWER -6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______. -
ANSWER -12 inches
According to code, footings shall be stepped when? - 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? - ANSWER -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? - ANSWER -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? - ANSWER -6 inches
Concrete Spread footing projections shall be at least ___________ and shall not
exceed the thickness of the footings. - ANSWER -2 inches
A concrete slab-on-ground cast monolithically with the footing placement at the footing
top and bottom? - ANSWER -1 number 5 of two number 4 bars in the middle third of the
footing.
What is the minimum footing width of a 2 story light frame construction building with a
soil bearing capacity of 2000 PSF? - ANSWER -12 inches
According to code, foundation plates or sills shall be anchored tothe foundation with
bolts spaced not more than _________ inches apart? - ANSWER -72 inches
You are finishing a concrete surface, defects of the finished product such as crazing,
dusting and spalling are caused by? - ANSWER -Overworking the concrete surface.
Floating adn troweling concrete too early in the curing process can cause? - ANSWER
-Water to rise and weaken concrete surface.
How close can your string line be to the cinder block wall you are building? - ANSWER
-1/16 inch
Wall ties should be placed how far from the edge of a masonry unit? - ANSWER -1/2
inch
What is the maximum vertical distance allowed between headers when building multi-
wythe masonry walls? - ANSWER -24 inches
What is the ideal size of head and bed joints in masonry construction? - ANSWER -3/8
inch
What is the minimum depth of a hearth in front of a masonry fireplace? - ANSWER -16
inches
What is the required minimum diameter of bolts used to anchor a roof structure to a
masonry wall? - ANSWER -1/2 inch
How high above the paved surface does the weep screed need to be? - ANSWER -2
inches
Weep screeds shall be a minimum of ___________ corrosion resistant weep screed or
plastic weep screed. - ANSWER -0.019 inch
Questions and CORRECT Answers
What is the appropriate gap between gypsum board and a tub surround? - ANSWER -
1/4 inch
Sprayed fire resistant materials are identified by ____________ and thickness required
for a given rating. - ANSWER -Density.
What is the most important factor in determining the "R" value of blown in insulation? -
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? - 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? - 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. - ANSWER -Fire Alarm Control
Unit.
On graded sites, the top of any exterior foundation shall extend above the elevation of:
- ANSWER -The street gutter at point of discharge.
What is the thickness of a footing for a single story frame residence? - ANSWER -6
inches.
Which of the following is the most important when deciding the depth of a footing? -
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? - ANSWER -1/3 acre.
Which of the following can be used as backfill outside a foundation without being
compacted? - ANSWER -Controlled low strength material.
For soils classified as sandy gravel, foundation pressure shall not exceed how many
PSI? - ANSWER -3000 Pounds per Square Foot.
Which of the following shall not be assumed to have a load bearing capacity for
foundations? - ANSWER -Organic Silt
, The soil report states that the soil is sandy-gravel. What is the soil's load-bearing
value? - 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? - ANSWER -12 inches
What is the minimum footing width of a one story light-frame construction building? -
ANSWER -12 inches
Which of the following would cause crazing (superficial cracking) on the surface of
concrete? - 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? - ANSWER -23 cubic yards.
According to code, the minimum thickness of a concrete slab that is supported directly
on the ground shall be ___________ inches. - ANSWER -3.5
According to the code, plain concrete for basement walls and foundations shall be what
minimum compressive strength (psi)? - ANSWER -2500 psi
the frost line is 24 inches below the surface. What is the required depth of a footing? -
ANSWER -Below the frost line.
A lot shall be graded to drain surface water away from foundation walls for a minimum
of ___________ feet. - ANSWER -10
What is the minimum overlap of a vapor barrier in an unvented crawl space. -
ANSWER -6 inches
The minimum dept of footings below the undisturbed ground surface shall be_______. -
ANSWER -12 inches
According to code, footings shall be stepped when? - 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? - ANSWER -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? - ANSWER -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? - ANSWER -6 inches
Concrete Spread footing projections shall be at least ___________ and shall not
exceed the thickness of the footings. - ANSWER -2 inches
A concrete slab-on-ground cast monolithically with the footing placement at the footing
top and bottom? - ANSWER -1 number 5 of two number 4 bars in the middle third of the
footing.
What is the minimum footing width of a 2 story light frame construction building with a
soil bearing capacity of 2000 PSF? - ANSWER -12 inches
According to code, foundation plates or sills shall be anchored tothe foundation with
bolts spaced not more than _________ inches apart? - ANSWER -72 inches
You are finishing a concrete surface, defects of the finished product such as crazing,
dusting and spalling are caused by? - ANSWER -Overworking the concrete surface.
Floating adn troweling concrete too early in the curing process can cause? - ANSWER
-Water to rise and weaken concrete surface.
How close can your string line be to the cinder block wall you are building? - ANSWER
-1/16 inch
Wall ties should be placed how far from the edge of a masonry unit? - ANSWER -1/2
inch
What is the maximum vertical distance allowed between headers when building multi-
wythe masonry walls? - ANSWER -24 inches
What is the ideal size of head and bed joints in masonry construction? - ANSWER -3/8
inch
What is the minimum depth of a hearth in front of a masonry fireplace? - ANSWER -16
inches
What is the required minimum diameter of bolts used to anchor a roof structure to a
masonry wall? - ANSWER -1/2 inch
How high above the paved surface does the weep screed need to be? - ANSWER -2
inches
Weep screeds shall be a minimum of ___________ corrosion resistant weep screed or
plastic weep screed. - ANSWER -0.019 inch
