Quiz_________________?
What is the minimum specified compressive strength of a foundation wall that is located
below the water table? -
Answer✅
4,000 - ACI 318-14 - Table 19.3.2.1 - steel reinforcement
Quiz_________________?
The strength of a member before application of any strength reduction factors is referred to
as -
Answer✅
Design strength ACI 41
Quiz_________________?
In which concrete category subclass would concrete that is exposed to saltwater be
classified? -
Answer✅
C2 - ACI 332
Quiz_________________?
The tensile strength of concrete in flexure is approximately __ percent of the compressive
strength. -
1
, Answer✅
10 - 15% - ACI 348
Quiz_________________?
What is the minimum slab thickness for a cantilever supported solid non-prestressed one-
way slab, 144" long, not factoring deflection? -
Answer✅
1.14 - ACI P. 84 Table 7.3.1.1 P
Quiz_________________?
Which exposure category applies to reinforced and prestressed concrete exposed to
conditions that require additional protection against corrosion of reinforcement? -
Answer✅
ACI 321 - Exposure Category C
Quiz_________________?
Which of the following applications would NOT allow the use of plain concrete?
Members in which arch action provides compression under all loading conditions
Columns & Pile caps
Walls
Pedestals -
Answer✅
Columns & Pile caps - ACI pg 195 - 14.1.3
Quiz_________________?
Find the nominal diameter of a #11 bar.
1.27
1.56
1.693
2
,1.410 -
Answer✅
1.410 - ACI- Page 507 - Appendix A bar chart
Quiz_________________?
Samples for strength tests of each class of concrete placed each day shall be taken not less
than once a day, nor less than once for each ______ of surface area for slabs or walls.
2,500 ft2
3,000 ft2
5,000 ft2
2,000 ft2 -
Answer✅
5,000 ft2 - ACI Pg. 480 testing
Quiz_________________?
How must lateral support of longitudinal bars using spirals be located in columns with
capitals?
They must extend to the level of the lowest horizontal reinforcement in members
supported above
They must extend to the level at which the diameter or width of the capital is twice that of
the column
The must extend to the level above the termination of the spiral to the top of the capital
They must extend to the level at which the diameter of the capital is equal to that of the
column -
Answer✅
They must extend to the level at which the diameter or width of the capital is twice that of
the column - ACI Pg. 162- Table 10.7.6.3.2
Quiz_________________?
What is the specified concrete cover for embedded pipes when exposed to earth?
3
, 3/4"
1"
1-1/4"
1-1/2" -
Answer✅
ACI pg.240 - 20.7.5 - Specific Concrete Cover Requirements for Corrosive Environments -
Specified concrete cover for pipe embedments with their fittings shall be at least 1-1/2 in.
for concrete exposed to earth or weather, and at least 3/4 in. or concrete not exposed to
weather, or not in contact with ground.
Quiz_________________?
Concrete, other than high-early strength, shall be maintained at a temperature of at least __
& remain moist for at least __ days after placement.
50°; 3 days
50°; 7 days
60°; 3 days
60°; 7days -
Answer✅
ACI pg.464 - 26.5.3.2 - Curing Concrete - (a) Concrete, other than high-early-strength, shall
be maintained at a temperature of at least 50° F and in a moist condition for at least the first
7 days after placement, except if accelerated curing is used.
Quiz_________________?
What is the specified concrete cover for fire protection of a cast-in-place prestressed
concrete slab that is cast directly against the ground?
¾"
1"
1 ½"
3" -
Answer✅
4
What is the minimum specified compressive strength of a foundation wall that is located
below the water table? -
Answer✅
4,000 - ACI 318-14 - Table 19.3.2.1 - steel reinforcement
Quiz_________________?
The strength of a member before application of any strength reduction factors is referred to
as -
Answer✅
Design strength ACI 41
Quiz_________________?
In which concrete category subclass would concrete that is exposed to saltwater be
classified? -
Answer✅
C2 - ACI 332
Quiz_________________?
The tensile strength of concrete in flexure is approximately __ percent of the compressive
strength. -
1
, Answer✅
10 - 15% - ACI 348
Quiz_________________?
What is the minimum slab thickness for a cantilever supported solid non-prestressed one-
way slab, 144" long, not factoring deflection? -
Answer✅
1.14 - ACI P. 84 Table 7.3.1.1 P
Quiz_________________?
Which exposure category applies to reinforced and prestressed concrete exposed to
conditions that require additional protection against corrosion of reinforcement? -
Answer✅
ACI 321 - Exposure Category C
Quiz_________________?
Which of the following applications would NOT allow the use of plain concrete?
Members in which arch action provides compression under all loading conditions
Columns & Pile caps
Walls
Pedestals -
Answer✅
Columns & Pile caps - ACI pg 195 - 14.1.3
Quiz_________________?
Find the nominal diameter of a #11 bar.
1.27
1.56
1.693
2
,1.410 -
Answer✅
1.410 - ACI- Page 507 - Appendix A bar chart
Quiz_________________?
Samples for strength tests of each class of concrete placed each day shall be taken not less
than once a day, nor less than once for each ______ of surface area for slabs or walls.
2,500 ft2
3,000 ft2
5,000 ft2
2,000 ft2 -
Answer✅
5,000 ft2 - ACI Pg. 480 testing
Quiz_________________?
How must lateral support of longitudinal bars using spirals be located in columns with
capitals?
They must extend to the level of the lowest horizontal reinforcement in members
supported above
They must extend to the level at which the diameter or width of the capital is twice that of
the column
The must extend to the level above the termination of the spiral to the top of the capital
They must extend to the level at which the diameter of the capital is equal to that of the
column -
Answer✅
They must extend to the level at which the diameter or width of the capital is twice that of
the column - ACI Pg. 162- Table 10.7.6.3.2
Quiz_________________?
What is the specified concrete cover for embedded pipes when exposed to earth?
3
, 3/4"
1"
1-1/4"
1-1/2" -
Answer✅
ACI pg.240 - 20.7.5 - Specific Concrete Cover Requirements for Corrosive Environments -
Specified concrete cover for pipe embedments with their fittings shall be at least 1-1/2 in.
for concrete exposed to earth or weather, and at least 3/4 in. or concrete not exposed to
weather, or not in contact with ground.
Quiz_________________?
Concrete, other than high-early strength, shall be maintained at a temperature of at least __
& remain moist for at least __ days after placement.
50°; 3 days
50°; 7 days
60°; 3 days
60°; 7days -
Answer✅
ACI pg.464 - 26.5.3.2 - Curing Concrete - (a) Concrete, other than high-early-strength, shall
be maintained at a temperature of at least 50° F and in a moist condition for at least the first
7 days after placement, except if accelerated curing is used.
Quiz_________________?
What is the specified concrete cover for fire protection of a cast-in-place prestressed
concrete slab that is cast directly against the ground?
¾"
1"
1 ½"
3" -
Answer✅
4
