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EARTHWORK EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 200 QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A+ $17.99   Add to cart
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EARTHWORK EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 200 QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A+

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EARTHWORK EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 200 QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A+

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  • November 8, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • earthwork exam and practice exam newest actual exa

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  • EARTHWORK
  • EARTHWORK

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EARTHWORK EXAM AND PRACTICE EXAM
NEWEST ACTUAL EXAM COMPLETE 200
QUESTIONS AND CORRECT DETAILED ANSWERS
|ALREADY GRADED A+
Factors an engineer must identify when considering the material-handling -
ANSWER Equipment type


Size


Number


The Fundamental Principle of Equipment Power - ANSWER 1. Speed affects
cycle time
2. Cycle time drives production
3. Production determines cost


Three power considerations - ANSWER Required power (baseline)


Available power (power machine has)


Useable power (based on conditions/equip, use)


RPM (N) - ANSWER Rotations per minute (measure of engine speed)


Horsepower (HP) - ANSWER a common unit of power, Gross HP (theoretical)
Flywheel HP (measured)
Rated HP (takes SAE efficiency into account)


Torque - ANSWER a force that causes rotation
Developed power (foot pounds)


SAE Efficiency - ANSWER Assume .85 efficiency (unless number is given)

,Theoretical engine efficiency is degraded by engine accessories


Transmission / Gear Ratio - ANSWER Conversion of engine rpm to drive shaft
rotations


Rolling Resistance - ANSWER resistance of a level surface to constant-
velocity motion across it


Grade Resistance - ANSWER The force-opposing movement of a machine up
a frictionless slope


Coefficient of Traction - ANSWER factor by which the total weight on the
drive wheels or tracks should be multiplied to determine the maximum
possible tractive force


Rimpull - ANSWER Tractive force between the tires of a machine's driving
wheels and the surface on which they travel (normally wheeled equipment)


Drawbar pull - ANSWER available pull exerted on a towed load (normally
track type equipment)


Payload (Struck and Heaped Volume) - ANSWER Carrying capacity of
equipment, volumetric & gravimetric


Struck Vol - soil even w the top of bed or bucket
Heaped Vol - Soil Above the top of bed or bucket


The average cycle time table for hoes maybe used when all of the following are
true EXCEPT - ANSWER Swing angle is 120 to 180 degrees


When operating a hoe, the worst fill factor is for which of the following
excavated material.? - ANSWER Poorly blasted rock

, A truck and trailer dumps its load by transferring the trailer to the dump truck.
- ANSWER False


Utility Profile plans commonly use different horizontal and vertical scales. -
ANSWER True


Which TWO of the following are considered gravity lines? - ANSWER Sanitary
Sewer


Storm Drain


When using trench boxes, the entire length of the excavation must be
protected. - ANSWER False


Failure planes of soil banks vary depending on the type of soil - ANSWER
True


In Soil Nailing, the "nails" are grouted only at the anchor point, which is
beyond the failure plane. - ANSWER False


Directional boring machines are commonly used for gravity sewer drain lines. -
ANSWER False


On road trucks typically haul material based on a heaped volume. - ANSWER
False


The hauling capacity of a truck is most commonly limited by the highway load
limits. - ANSWER True


When using a drag line it increases production to "cast" the bucket out
beyond the reach of the boom. - ANSWER False


Solo is another common term for a 10 wheel dump truck. - ANSWER True

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