The three basic components of soil are ______, ________, and __________. - Answers Solids, water,
and air
For bulk materials, volumetric measure varies with the material's position in the construction process.
- Answers True
The same weight of a material will occupy different volumes as the material is handled on the project.
- Answers True
________ is a reduction in density due to loosening the soil by digging. - Answers Swell
Which of the following soil volume is used to determine the volume capacity of excavating and
hauling equipment? - Answers Loose volume
Soil density is a measure of __________ per unit of volume. - Answers Weight
A soil's bank condition is the typical amount of soil in its __________ state. - Answers Natural
1 bank cubic yard is 1 cubic yard of material after it has been disturbed by a loading process. -
Answers False
Construction cost estimates are based on the total quantity of the work to be performed multiplied by
the ____________ of the work. - Answers Unit Price
A contractor is planning to haul in the soil to construct a parking lot for a shopping center she is
constructing. Density tests taken on the soil in its natural state (wet) indicate a unit weight of 101
pounds per cubic foot. The contractor heated a soil sample in an oven and determined the dry unit
weight to be 96 pounds per cubic foot. What is the moisture content of the soil? - Answers 5.21%
A contractor is planning to haul in the soil to construct a parking lot for a shopping center she is
constructing. Density tests taken on the soil in its natural state (wet) indicate a unit weight of 101
pounds per cubic foot. The contractor heated a soil sample in an oven and determined the dry unit
weight to be 96 pounds per cubic foot. To minimize the amount of compaction required to achieve
the design density for the parking lot, the contractor wants to increase the moisture content to 10%.
How many gallons of water should she add to each cubic yard of soil to increase the moisture content
to 10%? (1 gallon of water weighs 8.34 pounds) - Answers 14.92 gal/cy
A contractor plans to excavate 4,000 bank cubic yards from a site. He needs to have 1,000 compacted
cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 2,500
pounds per cubic yard, a loose density of 2,000 pounds per cubic yard, and a compacted density of
3,000 pounds per cubic yard. What is the percent shrinkage for the soil? - Answers 16.67%
A contractor plans to excavate 4,000 bank cubic yards from a site. He needs to have 1,000 compacted
cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 2,500
pounds per cubic yard, a loose density of 2,000 pounds per cubic yard, and a compacted density of
3,000 pounds per cubic yard. How many bank cubic yards should be kept to be used for the backfill
operation? - Answers 1,200 BCY
A contractor plans to excavate 4,000 bank cubic yards from a site. He needs to have 1,000 compacted
cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 2,500
pounds per cubic yard, a loose density of 2,000 pounds per cubic yard, and a compacted density of
3,000 pounds per cubic yard. He plans to use a truck that can haul 25 loose cubic yard per load. How
many full truckloads of loose excess material should be hauled off the site? - Answers 140
_______________ is the resistance of a level surface to constant-velocity motion across it, and it
results from friction of the driving mechanism, tire flexing, and the force required to shear through or
ride over the supporting surface. - Answers Rolling resistance
Rolling resistance applies to both crawler-type and wheel-type of mobile equipment. - Answers True
When a vehicle moves down a grade, the force of gravity that assists vehicle movement is also called
grade assistance. - Answers True
Power required, total resistance, and effective grade all denote the same thing. - Answers True
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. - Answers True
The power to move a crawler type of tractor and load is called Rimpull. - Answers False
_______________ is a term that is used to designate the tractive force between the tires of a
machine's driving wheels and the surface on which they travel - Answers Rimpull
The towing force a crawler tractor can exert on a load is referred to as _______________ - Answers
drawbar pull