Which is a CORRECT statement about trenching?

Which is a CORRECT statement about trenching?

• A. A dragline has a further reach than a backhoe
• B. A backhoe has a longer reach than a dragline
• C. Trench width cannot be controlled
• D. Bulldozers are used for trenching

Answer: (A)

In trenching, how far a machine can reach matters because it determines how much trench you can dig from a single position and how close you need to place the equipment to the trench. A dragline uses a tall boom and a long hoist line to lower a bucket into the trench and lift material from a distance. That setup gives a much longer reach than a backhoe, whose arm is shorter and designed for digging closer to the machine. Because of the boom and line arrangement, the dragline can trench farther along a route while keeping the machine away from unstable trench walls, which is why it’s the best choice for the statement. Trench width, meanwhile, is controlled by factors like bucket size and the trenching method, so the idea that trench width cannot be controlled isn’t accurate. Bulldozers aren’t the primary trenching tools; they’re more for pushing and grading material or backfilling, not for digging trenches, which is why that option doesn’t fit.

In trenching, how far a machine can reach matters because it determines how much trench you can dig from a single position and how close you need to place the equipment to the trench. A dragline uses a tall boom and a long hoist line to lower a bucket into the trench and lift material from a distance. That setup gives a much longer reach than a backhoe, whose arm is shorter and designed for digging closer to the machine. Because of the boom and line arrangement, the dragline can trench farther along a route while keeping the machine away from unstable trench walls, which is why it’s the best choice for the statement.

Trench width, meanwhile, is controlled by factors like bucket size and the trenching method, so the idea that trench width cannot be controlled isn’t accurate. Bulldozers aren’t the primary trenching tools; they’re more for pushing and grading material or backfilling, not for digging trenches, which is why that option doesn’t fit.