Arizona B3 Construction
Exam Practice Questions with
Correct Answers
General Construction & Safety (1-20)
1. What is the minimum size for a mortar joint for a concrete block on a
foundation?
1/4 inch
2. Exterior gypsum sheathing fasteners should be spaced _____ apart.
7 inches
3. An extension ladder is leaned against a vertical wall at a point that is 20 feet
above grade; the base of the ladder shall be located what minimum distance
from the wall?
5 feet
4. When installing 3 tab asphalt strip shingles in severe climates, on a roof
slope of 5/12 the approved ice protection membrane should extend from the
roof eave to a minimum of _____ inches inside the exterior wall.
24 inches
5. What type of connection should be used when an I-joist and a beam meet?
Manufactured structural connector or joist hanger
6. What is the maximum spacing of ceiling joists in a shower with 5/8 inch
water-resistance gypsum board with tile attached using adhesive?
16 inches
,7. An area where empty drums that have held flammable or hazardous product
are being welded or cut can include all of the following except:
oxygen used for cooling barrels and blowing dust from clothing
8. What should be used to fasten cement board to a wood framed subfloor?
galvanized nails or screws
9. The "Total Run" of a stairway is _____.
The sum of the tread run
10.Which of the following classes of asphalt shingles would have the best fire
rating?
Class A
11.On an Airless paint sprayer, what is responsible for the pattern of the paint?
Orifice
12.The slope ratio of a handicap accessible ramp shall be a maximum of _____.
1 foot in 12 feet
13.5/8 inch wood sheathing installed on a steel framed roof requires what type
and size screws?
No. 8 self-tapping
14.The _____ is the lowest member of a wood floor construction and attaches
to the foundation wall using anchor bolts.
sill plate
15.A masonry wall that shows signs of high alkalinity needs to be painted.
What type of paint should be used?
alkalyd resistant paint
, 16.Which of the following can be used as backfill outside a foundation without
being compacted?
Controlled low strength material
17.What is the minimum required compressive strength for concrete used in a
foundation wall?
2,500 psi
18.When installing roofing felt underlayment, the minimum lap for horizontal
seams is:
2 inches
19.The maximum allowable deflection for a residential floor joist under live
load is:
L/360
20.What type of nail is required for attaching joist hangers to a pressure treated
sill plate?
Hot-dipped galvanized or stainless steel
Concrete & Foundations (21-50)
21.What is the minimum thickness for a residential concrete foundation wall?
6 inches
22.How many cubic yards of concrete are needed for a 30' x 40' slab that is 4
inches thick?
14.8 cubic yards (approx. 15)
23.What is the maximum slump for concrete used in a foundation wall?
4 inches
Exam Practice Questions with
Correct Answers
General Construction & Safety (1-20)
1. What is the minimum size for a mortar joint for a concrete block on a
foundation?
1/4 inch
2. Exterior gypsum sheathing fasteners should be spaced _____ apart.
7 inches
3. An extension ladder is leaned against a vertical wall at a point that is 20 feet
above grade; the base of the ladder shall be located what minimum distance
from the wall?
5 feet
4. When installing 3 tab asphalt strip shingles in severe climates, on a roof
slope of 5/12 the approved ice protection membrane should extend from the
roof eave to a minimum of _____ inches inside the exterior wall.
24 inches
5. What type of connection should be used when an I-joist and a beam meet?
Manufactured structural connector or joist hanger
6. What is the maximum spacing of ceiling joists in a shower with 5/8 inch
water-resistance gypsum board with tile attached using adhesive?
16 inches
,7. An area where empty drums that have held flammable or hazardous product
are being welded or cut can include all of the following except:
oxygen used for cooling barrels and blowing dust from clothing
8. What should be used to fasten cement board to a wood framed subfloor?
galvanized nails or screws
9. The "Total Run" of a stairway is _____.
The sum of the tread run
10.Which of the following classes of asphalt shingles would have the best fire
rating?
Class A
11.On an Airless paint sprayer, what is responsible for the pattern of the paint?
Orifice
12.The slope ratio of a handicap accessible ramp shall be a maximum of _____.
1 foot in 12 feet
13.5/8 inch wood sheathing installed on a steel framed roof requires what type
and size screws?
No. 8 self-tapping
14.The _____ is the lowest member of a wood floor construction and attaches
to the foundation wall using anchor bolts.
sill plate
15.A masonry wall that shows signs of high alkalinity needs to be painted.
What type of paint should be used?
alkalyd resistant paint
, 16.Which of the following can be used as backfill outside a foundation without
being compacted?
Controlled low strength material
17.What is the minimum required compressive strength for concrete used in a
foundation wall?
2,500 psi
18.When installing roofing felt underlayment, the minimum lap for horizontal
seams is:
2 inches
19.The maximum allowable deflection for a residential floor joist under live
load is:
L/360
20.What type of nail is required for attaching joist hangers to a pressure treated
sill plate?
Hot-dipped galvanized or stainless steel
Concrete & Foundations (21-50)
21.What is the minimum thickness for a residential concrete foundation wall?
6 inches
22.How many cubic yards of concrete are needed for a 30' x 40' slab that is 4
inches thick?
14.8 cubic yards (approx. 15)
23.What is the maximum slump for concrete used in a foundation wall?
4 inches
