Excavator Operator Certification Exam Prep · Question
What is the primary function of performing a 'swale' or 'crowned' grade in a finished surface application?
Swales and crowned grades are specifically designed to manage surface water. A 'crowned' surface has a higher centre to shed water to the sides, while a 'swale'
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Question: What is the primary function of performing a 'swale' or 'crowned' grade in a finished surface application?
Answer options:
- To increase the aesthetic appeal of the landscape. ✅ To promote efficient surface water drainage away from structures or roadways.
- To reduce the overall compaction requirements of the soil.
- To provide a stable base for future construction activities.
Correct answer: To promote efficient surface water drainage away from structures or roadways.
Explanation: Swales and crowned grades are specifically designed to manage surface water. A 'crowned' surface has a higher centre to shed water to the sides, while a 'swale' is a depressed area that collects and directs water. Both are crucial for effective drainage and preventing water accumulation.
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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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