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2 cards from this section. Quick, good the night before a test.
Name one basic step in earthmoving operations.
Think about what happens before digging.
What is haul distance?
Consider how far you need to move the earth.
What is the economic haul distance for a bulldozer?
Consider the information provided about bulldozer efficiency.
True or False: Grade resistance only occurs when moving downhill.
Think about how machines perform on different slopes.
Calculate the total tractive effort for a bulldozer with a gross weight of 25 tons on a poorly maintained earthen road, given a rolling resistance of 75 kg/ton and a 4 cm penetration.
Consider both the base rolling resistance and the additional effort due to sinking.
Design a small experiment to compare the actual power consumption of two types of earthmoving equipment over a fixed distance of 100 meters.
Think about controlling variables to ensure a fair test.
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