Chapter 2 - Online Quiz

Question 1

The item shown in the sketch found on page 76 (fig 2.65) is a synthetic rubber material. What is it called?

Answer 1

Waterstop

Question 2

Earth Reinforcing can be an economical alternative to the use of what?

Answer 2

Conventional retaining walls

Question 3

A waterstop is used to lower the water table in the vicinity of a building. T/F

Answer 3

False

Well points are used to lower the water table.

Question 4

Which of the following is not a slope support system for deep excavations? Slurry walls, steel sheet piling, precast concrete sheet piling, “soldier beams and lagging,” or caissons?

Answer 4

Caissons

Question 5

Which of the following is not a method of bracing vertical sheeting in a deep excavation? Cross lot, well points, rakers, or tiebacks?

Answer 5

Well points

Question 6

Slurry walls are associated with what?

Answer 6

Deep foundations

Question 7

Wood piles may be used without a decay-preventative treatment if they lie totally beneath the water table. T/F

Answer 7

True

Question 8

Soldier beams and lagging are what?

Answer 8

Sheet piling

Question 9

A drainage mat (drainage blanket) is usually placed how?

Answer 9

Vertically

Question 10

Which of the following deals with “strengthening and/or stabilizing foundation of existing buildings? Bentonite slurry, caissons, underpinning, geotextile fabric, or well points?

Answer 10

Underpinning

Question 11

Settlement of a building after it is constructed is likely to be the greatest under which conditions? Foundation if bearing on friction piles, engineered fill, bedrock, or clay?

Answer 11

Foundation is bearing on clay

Question 12

A slurry wall is a type of excavation support that temporarily uses slurry to support the excavation walls until concrete and steel are put into place. T/F

Answer 12

True

Question 13

The soil around an excavation can sometimes be stabilized by soil reinforcing or nailing. T/F

Answer 13

True

Question 14

Combined footings are used to save money in cases where concrete prices are high. T/F

Answer 14

False

Combined footings are used when columns are on a property line. Legally footing cannot extend over property lines.

Question 15

Bentonite clay makes an excellent waterproof membrane around a basement. T/F

Answer 15

True

Question 16

In what area of the country would you be most likely to find base isolators as part of a foundation system? Maine, Florida, Southern CA, or Texas?

Answer 16

Southern CA

Question 17

One side of a building’s footing rests on clay and the other side rests on a dense sand/gravel blend. The type of settlement you would expect is likely to be what?

Answer 17

Differential settlement

Question 18

Which deep foundations system would you specify if the bearing strata was very far (say, 3,000 ft) below the ground surface?

Answer 18

Friction piles

Question 19

Shallow footings may only be placed on undisturbed, natural soil. T/F

Answer 19

False

They may also be placed on engineered fill.

Question 20

A tieback must always be anchored in rock. T/F

Answer 20

False

It can also be anchored in a stratum of stable soil.