ACI Concrete- Section 4 questions with 100% correct answers 2024

ACI Concrete- Section 4The diameter of the tamping rod used in this test method is ________. - correct answer 16 mm (5/8") + or - 2 mm (1/16") What is the required shape of the tamping end of the rod - correct answer Rounded to Hemispherical tip What is the required minimum frequency of the vibrator used in this test method? - correct answer 9000 vibrations per minute (150Hz) The outside diameter or side dimension of the vibrating element must be at least ______ but not greater than _______. - correct answer 19 mm (3/4"), 38 mm (1-1/2") A plastic container can be used for the measure in this test method. - correct answer False, measure must be steel or other suitable metal What is the minimum thickness of a metal strike-off plate? - correct answer 6 mm (1/4") What is the minimum thickness for a glass or acrylic strike-off plate? - correct answer 12 mm (1/2") What is the specified weight of the mallet used on measures that are 14 L (0.5 cubic feet) or smaller? - correct answer 600 + or - 200 g (1.25 + or - 0.5 lbs) Measures other than air meter bowls used for this test must conform to Test Method __________. - correct answer C29/C29M Air meter bowls used for this test must conform to Test Method ________ and calibrated for volume according to Test Method ________. - correct answer C231/C231M, C29/C29M