multiple choice

Relative density affects:

d. All of the above

In clays, water content influences:

d. All of the above

Number of tamper blows in a standard compaction test is:

c. 25

Selection of compaction equipment depends on:

d. All of the above

Which is an example of a site compaction test:

c. Sand-Cone test

Max compaction usually occurs at the depth of:

a. 2 ft

MH, per unified classification symbols, refers to:

d. Highly plastic silts

Amount of settlement depends on (select multiple):

a. Load from fill
b. compressibility
c. thickness of foundation soil

Rate of settlement depends on (select multiple):

a. Permeability of soil
b. Subsurface drainage

A method to prevent damage induced by slow rate settlement is:

c. a & b

A process that uses a vibratory pile driver in conjunction with a specially designed probe is called:

c. Resonance compaction

When the hydraulic gradient is equal to the critical hydraulic gradient, soil will rise in the water flow, creating an unstable condition. This is referred to as:

d. All of the above

Which method involves excavation from within the permanent structure?

a. Caissons

Which method involves injection of cement-sand mix into soil voids?

b. Grouting

Most used dewatering method is:

a. Open sumps

Amount of groundwater lowering through well pumping depends on:

d. All of the above

Clay subjected to vibration is:

b. Type B soils

Dry unstable rock is:

b. Type B soils

Unstable submerged rock is:

c. Type C soils

Which loading condition moves support walls away from the soil?

b. Active earth pressure

The highest quality material in pavement is:

a. Wearing surface

Which hammer relies on centrifugal forces produced by motors?

d. Vibratory hammers

The wave equation provides (select multiple):

a. Max compression stress
b. Max tensile stress
c. Static resistance of pile
d. Stroke

Which deep foundation method involves drilling with a continuous flight rig?

c. Auger-cast piles