North Carolina General Contractors Practice Exam

Which dozer blade is considered the most efficient and why?

1. The "S" blade because it moves more material

2. The "A" blade because it side casts material effectively

3. The "U" blade due to its weight

4. The "C" blade because it has a wider surface

The correct answer is: The "A" blade because it side casts material effectively

The "A" blade is regarded as the most efficient dozer blade primarily due to its design that allows for effective side-casting of material. The angled edges of an "A" blade enable the operator to move dirt and debris not only forward but also off to the sides, which is particularly useful in trenching or when grading an area that requires materials to be moved laterally. This capability enhances the versatility of the dozer, allowing for different types of work without the need to reposition significantly. Utilizing the "A" blade can improve productivity in tasks that involve creating ditches, leveling ground, or managing surface water flow, where rapid and efficient side displacement of material is often necessary. The ability to cast material effectively reduces time spent on subsequent passes and enhances overall job efficiency, supporting a wide variety of applications in construction and earth-moving operations.