ACTUAL LATEST VERSIONS 150 QUESTIONS
AND CORRECT VERIFIED ANSWERS WITH
RATIONALES (100% CORRECT) A+ GRADED
ASSURED
(T/F) 1 bank cubic yard is 1 cubic yard of material after it has been disturbed by a loading
process - CORRECT ANSWER: F
(T/F) For bulk materials, volumetric mesure varies with material's position in the construction
process - CORRECT ANSWER: T
(T/F) rolling resistance applied to both crawler-type and wheel-type mobile equipment -
CORRECT ANSWER: T
(T/F) The decision process for matching the best possible machine to the project task requires the
engineer to take into account both the properties of the material to be handled and the mechanical
capabilities of the machine - CORRECT ANSWER: T
(T/F) The power to move a crawler type of tractor and load is called Rimpull - CORRECT
ANSWER: F
(T/F) The same weight of a material will occupy different volumes as the material is handled on
the project - CORRECT ANSWER: T
(T/F) When a vehicle moves down a grade the force of gravity that assists the vehicle is also
called grade assistance - CORRECT ANSWER: T
,(T/F)power required, total resistance and effective grade all denote the same thing - CORRECT
ANSWER: T
Bank Soil - CORRECT ANSWER: natural state, before being undisturbed used for performing
quantity take offs
BCY to LCY - CORRECT ANSWER: Vl=Vb(100%+%swell)
BCY= - CORRECT ANSWER: Vc/(1-%shrinkage)
Coefficient of traction - CORRECT ANSWER: the ratio between the maximum amount of pull a
machine exerts before slippage and the totalweight on the drivers
Compact Soil - CORRECT ANSWER: after comparison, used to determine the volume of any
structure such as a damn or a fill
Cycle time - CORRECT ANSWER: drives production
Drawbar Pull - CORRECT ANSWER: towing force a crawler tractor can exert on a load
Grade Resistance Factor= - CORRECT ANSWER: (20 lb/tn) * (%grade)
LCY= - CORRECT ANSWER: [Vc(1+%swell)]/(1-% shrinkage)
Loose Soil - CORRECT ANSWER: has been excavated or loaded, used to determine the volume
capacity of the excavating and hauling equipment
Maximum usable tractive force= - CORRECT ANSWER: =F x CT (F= load on drive axles in
pounds- CT = coefficient of traction)
, Moister content calculation - CORRECT ANSWER: (wet weight - dry weight) / dry weight
Production - CORRECT ANSWER: determines cost
Rimpull - CORRECT ANSWER: the tractive force between the tires of a machine's driving
wheels and the surface on which they travel
Rolling Resistance - CORRECT ANSWER: resistance of a level surface to constant-velocity
motion across it
Soil density is a measure of ? per unit of volume. - CORRECT ANSWER: Weight
Speed - CORRECT ANSWER: affects cycle time
Swell - CORRECT ANSWER: Reduction in density due to loosening the soil by digging
TEG up= - CORRECT ANSWER: %grade+ (RR factor/20)
the primary factors thatdetermine the power available at the drive wheels (drawbar) of a machine
are? - CORRECT ANSWER: Engine horsepower and operating gear
Three basic components of soil - CORRECT ANSWER: solids, water and air
To Increase or Decrease Moisture Content= - CORRECT ANSWER: water deficiency/ 8.34
Total effective grade down= - CORRECT ANSWER: -%grade + (RR factor/20)