ARIZONA CR2 - EXCAVATING, GRADING & OIL SURFACING UPDATED EXAM QUESTIONS AND CORRECT ANSWERS WITH GUARANTEED PASS

1. What is the minimum distance a worker must maintain from an
unprotected edge?
• A) 2 feet
• B) 4 feet
• C) 6 feet
• D) 10 feet ANSWER : C) 6 feet
2. At what depth must excavations be protected against cave-ins?
• A) 3 feet
• B) 4 feet
• C) 5 feet
• D) 6 feet ANSWER : C) 5 feet
3. What is the maximum allowable slope for Type C soil?
• A) 1:1 (45 degrees)
• B) 1.5:1 (34 degrees)
• C) 1:1.5 (53 degrees)
• D) 0.5:1 (63 degrees) ANSWER : B) 1.5:1 (34 degrees)
4. Who is qualified to classify soil types on a construction site?
• A) Any worker
• B) Equipment operator
• C) Competent person
• D) Project manager ANSWER : C) Competent person
5. How often must excavations be inspected by a competent person?
• A) Once per week

, • B) Daily before work starts
• C) Only after rain
• D) Monthly ANSWER : B) Daily before work starts
6. What is the minimum width required for a trench ladder?
• A) 10 inches
• B) 12 inches
• C) 15 inches
• D) 18 inches ANSWER : C) 15 inches
7. Spoil piles must be kept at least how far from the edge of an excavation?
• A) 1 foot
• B) 2 feet
• C) 3 feet
• D) 4 feet ANSWER : B) 2 feet
8. What is the maximum vertical distance between ladder rungs?
• A) 10 inches
• B) 12 inches
• C) 14 inches
• D) 16 inches ANSWER : B) 12 inches
9. When must atmospheric testing be conducted in an excavation?
• A) Only in confined spaces
• B) When depth exceeds 4 feet and oxygen deficiency exists
• C) Never required
• D) Only when requested by workers ANSWER : B) When depth
exceeds 4 feet and oxygen deficiency exists
10. What is the maximum distance a worker should be from a means of
egress in a trench?
• A) 10 feet
• B) 15 feet

, • C) 25 feet
• D) 50 feet ANSWER : C) 25 feet
11. Type A soil has an unconfined compressive strength of at least:
• A) 0.5 tons per square foot
• B) 1.0 tons per square foot
• C) 1.5 tons per square foot
• D) 2.0 tons per square foot ANSWER : C) 1.5 tons per square foot
12. What is required when workers are exposed to vehicular traffic?
• A) Hard hats only
• B) High-visibility clothing
• C) Steel-toed boots
• D) Reflective tape on equipment ANSWER : B) High-visibility
clothing
13. How far must underground utilities be located before excavation?
• A) Within the job site only
• B) Within 10 feet of excavation
• C) In the entire work area
• D) Not required ANSWER : C) In the entire work area
14. What is the minimum safe distance from overhead power lines for
equipment?
• A) 5 feet
• B) 10 feet
• C) 15 feet
• D) 20 feet ANSWER : B) 10 feet
15. Trench boxes must extend at least how far above the bottom of the
excavation?
• A) 12 inches
• B) 18 inches

, • C) 24 inches
• D) To the top ANSWER : B) 18 inches
16. What type of soil dries into hard lumps and cannot be molded when
wet?
• A) Type A
• B) Type B
• C) Type C
• D) Type D ANSWER : C) Type C
17. Safety meetings should be conducted:
• A) Weekly
• B) Monthly
• C) Quarterly
• D) As needed ANSWER : A) Weekly
18. What is the first action when a utility line is damaged?
• A) Continue working
• B) Call supervisor
• C) Evacuate and call 911
• D) Try to repair it ANSWER : C) Evacuate and call 911
19. Fall protection is required at heights of:
• A) 4 feet
• B) 6 feet
• C) 8 feet
• D) 10 feet ANSWER : B) 6 feet
20. Who must be notified before excavation begins?
• A) Local police
• B) Underground utility location service
• C) Neighbors