Practice test for Engineering Assistant Vol 2 CDC
Functionality
Flexibility
Accuracy
Economy
Weapons storage area, asbestos, lead-based paint, and contaminated soil.
Asbestos, Weapons storage area, and contaminated soil.
Asbestos, lead-based paint, and Weapons storage area.
Asbestos, lead-based paint, and contaminated soil.
Flexibility
Accuracy
Economy
Function
Military and government only.
Military, industrial, and government
Military, industrial, and local ordinances.
Metropolitan ordinances, military, and industrial.
AFMC
AFCESA
US Army Corps of Engineers
United Facilities Guide Specification.
Silt
Sand
Gravel
Highly organic
10 percent
20 percent
40 percent
50 percent
No. 4
No. 10
No. 40
No. 200
Cohesion
Plasticity
Compaction
Permeability
a constant weight is attained
The meniscus in the pore openings restricts the rate of capillary rise
The hygroscopic moisture in the soil is in equilibrium with the moisture vapor in the air.
the capillary fringe in the soil recedes to a point where it is in equilibrium with hygroscopic moisture.
0.75
1.33
7.00
49.0
Angularity
Durability
Gradation
Granularity
un-graded
Gap-graded
well-graded
poorly-graded
Lower the grade line
Raise the ground water table
Keep the site location regardless of cost
Change the site location if there is enough cause
0.2 percent
0.5 percent
2 percent
5 percent
The nature of the soil
The area to be drained
Specification limitations
The equipment available
To lower the water table
To raise the water table
To maintain underground springs
To collect water in pools or layers beneath the surface
2 feet
3 feet
4 feet
5 feet
Heating
adding alcohol
Mixing with coal air
Adding ascorbic acid
Provide a nonskid surface
Provide a binder for the bitumen
Transmit the load to the base course
Take the abrasive action of the traffic
Wash test
Stripping test
Distillation test
Mohs hardness scale
Moisture content and aggregate size
Moisture content, intended use, gradation, and angularity
Intended use, binder type, loading, and maximum aggregate size
Plasticity, binder type, maximum aggregate size, and angularity
N/A
N/A
Make the mix workable and inhibit hydration
make the mix workable and start hydration
Increase weight of mix and inhibit hydration
decrease the amount of mix and start hydration
Rough shape to promote workability
Round shape to promote workability
Round shape to promote uniformity
Rough shape to promote uniformity