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ACI CONCRETE FIELD TESTING TECHNICIAN- GRADE I VERSION 1 EXAM
LATEST 2026-2027 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY GRADED A+|
||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
A plastic container can be used for the measure in this method.
True or False? - ANSWER-False, measure must be steel or other
suitable metal
What is the minimum thickness of a metal strike-off plate? -
ANSWER-1/4 in (6 mm)
What is the minimum thickness for a glass or acrylic strike-off
plate? - ANSWER-1/2 in (12 mm)
What is the specified weight of the mallet used on measures that
are 0.5 ft^3 (14 L) or smaller? - ANSWER-1.25 +- 0.5 lb (600 +-
200 g)
Measures other than air meter bowls used for this test must
conform to ASTM ___. - ANSWER-C29
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Air meter bowls used for this test must conform to ASTM ___ and
be calibrated for volume according to ASTM ___. - ANSWER-
C231, C29
The concrete sample must be obtained in accordance with what
ASTM method? - ANSWER-C172
What method of consolidation must be used when the slump is
greater than 3 in. (75 mm)? - ANSWER-Rodding
What method of consolidation must be used when the slump is
less than 1 in. (25 mm)? - ANSWER-Vibration
If rodding is the method of consolidation being used, the measure
must be filled in how many layers? - ANSWER-3
For a measure of 0.5 ft^3 (14 L), what is the required number of
strokes of the tamping rod for consolidation of each layer? -
ANSWER-25
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When rodding the middle and the top layers, the tamping rod
should penetrate into the layer below approximately ___. -
ANSWER-1 in. (25 mm)
If vibration is the method of consolidation, the measure must be
filled in ___ approximately equal layers. - ANSWER-2
If, after consolidation of the final layer, the concrete level is 1/2 in.
(13 mm) above the top of the measure, what should be done? -
ANSWER-Remove a representative portion of the excess
concrete with a trowel or scoop
After consolidation of the final layer, an excess of concrete ___
above the top of the measure is considered optimum. - ANSWER-
1/8 in. (3 mm)
After completing the strike-off procedure, what must be done
before weighing the measure and sample? - ANSWER-Clean off
any excess concrete
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Density (Unit Weight) Calculation:
Known: Volume of measure=0.504 ft^3
Mass of empty measure=19.6 lb
The procedures of Method C138 are followed, and the mass of
the measure plus the concrete is found to be 92.1 lb.
Calculate the density of the concrete in lb/ft^3 - ANSWER-Mass of
measure plus sample - Mass of empty measure = net mass of
concrete
Density = net mass of concrete/volume of the measure
143.9 lb/ft^3
Yield Calculations
For a design batch of 7.0 yd^3, the total mass of all materials
batched was 27,300 lb. Using the density of the concrete as
determined in Question 21, calculate:
a) The yield per batch in ft^3
b) The yield per batch in yd^3
ACI CONCRETE FIELD TESTING TECHNICIAN- GRADE I VERSION 1 EXAM
LATEST 2026-2027 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY GRADED A+|
||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
A plastic container can be used for the measure in this method.
True or False? - ANSWER-False, measure must be steel or other
suitable metal
What is the minimum thickness of a metal strike-off plate? -
ANSWER-1/4 in (6 mm)
What is the minimum thickness for a glass or acrylic strike-off
plate? - ANSWER-1/2 in (12 mm)
What is the specified weight of the mallet used on measures that
are 0.5 ft^3 (14 L) or smaller? - ANSWER-1.25 +- 0.5 lb (600 +-
200 g)
Measures other than air meter bowls used for this test must
conform to ASTM ___. - ANSWER-C29
,2|Page
Air meter bowls used for this test must conform to ASTM ___ and
be calibrated for volume according to ASTM ___. - ANSWER-
C231, C29
The concrete sample must be obtained in accordance with what
ASTM method? - ANSWER-C172
What method of consolidation must be used when the slump is
greater than 3 in. (75 mm)? - ANSWER-Rodding
What method of consolidation must be used when the slump is
less than 1 in. (25 mm)? - ANSWER-Vibration
If rodding is the method of consolidation being used, the measure
must be filled in how many layers? - ANSWER-3
For a measure of 0.5 ft^3 (14 L), what is the required number of
strokes of the tamping rod for consolidation of each layer? -
ANSWER-25
,3|Page
When rodding the middle and the top layers, the tamping rod
should penetrate into the layer below approximately ___. -
ANSWER-1 in. (25 mm)
If vibration is the method of consolidation, the measure must be
filled in ___ approximately equal layers. - ANSWER-2
If, after consolidation of the final layer, the concrete level is 1/2 in.
(13 mm) above the top of the measure, what should be done? -
ANSWER-Remove a representative portion of the excess
concrete with a trowel or scoop
After consolidation of the final layer, an excess of concrete ___
above the top of the measure is considered optimum. - ANSWER-
1/8 in. (3 mm)
After completing the strike-off procedure, what must be done
before weighing the measure and sample? - ANSWER-Clean off
any excess concrete
, 4|Page
Density (Unit Weight) Calculation:
Known: Volume of measure=0.504 ft^3
Mass of empty measure=19.6 lb
The procedures of Method C138 are followed, and the mass of
the measure plus the concrete is found to be 92.1 lb.
Calculate the density of the concrete in lb/ft^3 - ANSWER-Mass of
measure plus sample - Mass of empty measure = net mass of
concrete
Density = net mass of concrete/volume of the measure
143.9 lb/ft^3
Yield Calculations
For a design batch of 7.0 yd^3, the total mass of all materials
batched was 27,300 lb. Using the density of the concrete as
determined in Question 21, calculate:
a) The yield per batch in ft^3
b) The yield per batch in yd^3
