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ACI GRADE 1 WRITTEN EXAM LATEST ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
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ACI GRADE 1 WRITTEN EXAM LATEST ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+ ACI GRADE 1 WRITTEN EXAM LATEST ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+

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  • December 13, 2023
  • 38
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • aci
  • aci grade 1
  • aci grade 1 written exam
  • aci grade 1 written exam latest actual

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ACI GRADE 1 WRITTEN EXAM LATEST 2023-2024
ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GRADED A+


T or F: After the final rodding, the sides of the slump mold should should be
tapped lightly with the tamping rod. - ANSWER--False


T or F: When raising the slump mold, it should not be rotated or twisted.
(C143/C143M - 15a, Slump of Hydraulic-Cement Concrete) - ANSWER--True


How much time is allowed for lifting the slump mold? (C143/C143M - 15a, Slump
of Hydraulic-Cement Concrete) - ANSWER--5 +/- 2 seconds


The measurement for slump is made from the top of the mold to what point is
the concrete specimen? (C143/C143M - 15a, Slump of Hydraulic-Cement
Concrete) - ANSWER--The displaced original center of the top surface of the
specimen


The slump of the concrete is measured and reported to the nearest...
(C143/C143M - 15a, Slump of Hydraulic-Cement Concrete) - ANSWER--1/4 in (5
mm)


How much time is allowed to conduct the slump test from beginning to
completion? (C143/C143M - 15a, Slump of Hydraulic-Cement Concrete) -
ANSWER--2.5 minutes


The diameter of the tamping rod used in the test method is _____. (C138/C138M
- 17a, Density (unit weight), yields, and air content (gravimetric) of concrete) -
ANSWER--16 mm (5/8 in) +/- 2 mm (1/16 in)

, ACI GRADE 1 WRITTEN EXAM LATEST 2023-2024
ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GRADED A+


What is the required shape of the tamping end of the rod? (C138/C138M - 17a,
Density (unit weight), yields, and air content (gravimetric) of concrete) - ANSWER-
-Rounded to a hemispherical tip


What is the required minimum frequency of the vibratos used in this testing
method? (C138/C138M - 17a, Density (unit weight), yields, and air content
(gravimetric) of concrete) - ANSWER--9000 vibrations per min (150 hz)


The outside diameter or size dimension of the vibrating element must be at least
___, but not greater than ___. (C138/C138M - 17a, Density (unit weight), yields,
and air content (gravimetric) of concrete) - ANSWER--19 mm (0.75 in), 38 mm
(1.50 in)


T or F: A plastic container can be used for the measure in this method.
(C138/C138M - 17a, Density (unit weight), yields, and air content (gravimetric) of
concrete) - ANSWER--False, measure must be steel or other suitable metal


What is the minimum thickness of a metal striker-off plate? (C138/C138M - 17a,
Density (unit weight), yields, and air content (gravimetric) of concrete) - ANSWER-
-6 mm (1/4 in)


What is the minimum thickness for a glass or acrylic strike-off plate?
(C138/C138M - 17a, Density (unit weight), yields, and air content (gravimetric) of
concrete) - ANSWER--12 mm (1/2 in)

, ACI GRADE 1 WRITTEN EXAM LATEST 2023-2024
ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GRADED A+

What is the specific red weight of the mallet used on measures that are 14 L (0.5
ft3)? (C138/C138M - 17a, Density (unit weight), yields, and air content
(gravimetric) of concrete) - ANSWER--600 +/- 200 g (1.25 +/- 0.50 lb)


Measures other than air meter bowls used for this test must conform to ASTM
_____. (C138/C138M - 17a, Density (unit weight), yields, and air content
(gravimetric) of concrete) - ANSWER--C29/C29M


Air meter bowls used for this test must conform to ASTM _____ and be calibrated
for volume according to ASTM _____. (C138/C138M - 17a, Density (unit weight),
yields, and air content (gravimetric) of concrete) - ANSWER--C231/C231M,
C29/C29M


The concrete sample must be obtained in accodance with what ASTM method?
(C138/C138M - 17a, Density (unit weight), yields, and air content (gravimetric) of
concrete) - ANSWER--C172/C172M


What method of consolidation must be used when the slump is greater than 75
mm (3 in) (C138/C138M - 17a, Density (unit weight), yields, and air content
(gravimetric) of concrete) - ANSWER--Rodding


What method of consolidation must be used when the slump is less than 1 in. (25
mm]? (C138/C138M - 17a, Density (unit weight), yields, and air content
(gravimetric) of concrete) - ANSWER--Vibration

, ACI GRADE 1 WRITTEN EXAM LATEST 2023-2024
ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GRADED A+

If rodding is the method of consolidation being used, the measure must be filled
in how many layers? (C138/C138M - 17a, Density (unit weight), yields, and air
content (gravimetric) of concrete) - 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? (C138/C138M - 17a, Density (unit
weight), yields, and air content (gravimetric) of concrete) - ANSWER--25


When rodding the middle and the top layers, the tamping rod should penetrate
into the layer below approximately ___. (C138/C138M - 17a, Density (unit
weight), yields, and air content (gravimetric) of concrete) - ANSWER--25 mm (1 in)


If vibration is the method of consolidation, the measure must be filled in _____
approximately equal layers. (C138/C138M - 17a, Density (unit weight), yields, and
air content (gravimetric) of concrete) - 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? (C138/C138M - 17a, Density (unit
weight), yields, and air content (gravimetric) of concrete) - 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. (C138/C138M - 17a, Density (unit weight),
yields, and air content (gravimetric) of concrete) - ANSWER--3 mm (1/8 in)

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