Arizona ROC A-5 Excavating, Grading and Oil Surfacing Practice Questions - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Examination Exam - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Practice Questions - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Examination Exam

Question 1

An excavation project requires removing 1,200 bank cubic yards (BCY) of dense clay. If the clay has an estimated swell factor of 25%, what loose volume in loose cubic yards (LCY) must be hauled away by dump trucks?

1,500 LCY 1,200 LCY 960 LCY 1,440 LCY

Correct Answer:

1,500 LCY

Question 2

An earthmoving contractor needs to place 2,000 compacted cubic yards (CCY) of embankment fill. The borrow soil has a shrink factor of 15% relative to bank measure and a swell factor of 20% from bank to loose measure. How many loose cubic yards (LCY) of borrow soil must be hauled?

2,353 LCY 2,824 LCY 2,400 LCY 1,700 LCY

Correct Answer:

2,824 LCY

Question 3

According to OSHA 29 CFR 1926 Subpart P, what is the maximum allowable simple slope for an un-shored excavation in Type A soil that is 12 feet deep and open for short-term duration?

1.5:1 (34 degrees) 1:1 (45 degrees) 3/4:1 (53 degrees) 1/2:1 (63 degrees)

Correct Answer:

3/4:1 (53 degrees)

Question 4

What is the primary operational difference in compaction energy between the Standard Proctor Test (ASTM D698) and the Modified Proctor Test (ASTM D1557)?

Modified Proctor uses a 5.5 lb hammer falling 12 inches with 12,400 ft-lb/ft³ energy. Standard Proctor uses a 10 lb hammer falling 18 inches in 5 layers. Standard Proctor applies 5 times greater compaction energy than Modified Proctor. Modified Proctor uses a 10 lb hammer falling 18 inches with approximately 56,250 ft-lb/ft³ energy.

Correct Answer:

Modified Proctor uses a 10 lb hammer falling 18 inches with approximately 56,250 ft-lb/ft³ energy.

Question 5

When conducting a field density test using the Sand Cone Method (ASTM D1556), what standardized material is calibrated and poured into the excavated test hole to determine its volume?

Clean, uniform Ottawa silica sand (passing No. 20 and retained on No. 30 sieve) Crushed limestone aggregate base Well-graded pea gravel Fine portland cement powder

Correct Answer:

Clean, uniform Ottawa silica sand (passing No. 20 and retained on No. 30 sieve)

Question 1

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Prepare with the Arizona ROC A-5 Excavating, Grading and Oil Surfacing Practice Questions - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Examination Exam practice quiz. This question bank includes 100 questions covering soil, excavation, subgrade, cubic, and yards. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Arizona ROC A-5 Excavating, Grading and Oil Surfacing Practice Questions - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on soil, excavation, subgrade, cubic, and yards. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Arizona ROC A-5 Excavating, Grading and Oil Surfacing Practice Questions - Arizona ROC A-5 Excavating, Grading and Oil Surfacing Examination Exam

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