When cutting a steep bank or ditch, the grader's mouldboard should typically be angled:

Question: When cutting a steep bank or ditch, the grader's mouldboard should typically be angled:

Answer options:

• As close to 90 degrees as possible relative to the direction of travel
• Between 45 and 60 degrees relative to the direction of travel ✅ Vertically, with the heel of the mouldboard extended
• Horizontally, for maximum material collection

Correct answer: Vertically, with the heel of the mouldboard extended

Explanation: For cutting steep banks or ditches, the mouldboard should be angled aggressively, often nearly vertical, and extended with the heel out (articulated) to reach down the slope. This maximizes cutting penetration and allows the grader to shape the slope effectively without excessive slippage or damage to the road surface, as per IUOE 793 training.