Heavy Equipment Operator Certification Exam Prep · Question
According to typical construction practices and material properties, what is a common maximum lift thickness for granular road base material (e.g., Granular A) compacted with a vibratory roller?
A common maximum lift thickness for granular road base material compacted with a vibratory roller is around 300 mm (12 inches), though it can vary based on comp
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Question: According to typical construction practices and material properties, what is a common maximum lift thickness for granular road base material (e.g., Granular A) compacted with a vibratory roller?
Answer options:
- 100 mm (4 inches)
- 200 mm (8 inches) ✅ 300 mm (12 inches)
- 450 mm (18 inches)
Correct answer: 300 mm (12 inches)
Explanation: A common maximum lift thickness for granular road base material compacted with a vibratory roller is around 300 mm (12 inches), though it can vary based on compactor size, material, and required density.
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