Ascending and descending slopes continue operation?

• A. 20%
• B. 47%
• C. 60%
• D. 75%

Answer: (B)

When you’re working on slopes, the important factor is the machine’s stability and traction as slope steepness increases. The grade percentage tells you how steep the slope is: a 47% grade means a rise of 47 units for every 100 units of horizontal travel, which is about 25 degrees. This is the maximum grade at which a wheel loader can safely continue ascending or descending under typical conditions. Beyond that, gravity and weight distribution make rollover or loss of control much more likely, especially if you’re lifting the bucket, turning, or traveling too fast. So the best practice is to continue operation up to about 47%; on steeper slopes, stop or reposition. The other percentages represent either safer, gentler slopes or exceed the safe limit, with 47% matching the upper end of safe continuous operation.