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Flashcards in Chapter 2 - Online Quiz Deck (20)
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1
Q

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

A

Waterstop

2
Q

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

A

Conventional retaining walls

3
Q

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

A

False

Well points are used to lower the water table.

4
Q

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?

A

Caissons

5
Q

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

A

Well points

6
Q

Slurry walls are associated with what?

A

Deep foundations

7
Q

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

A

True

8
Q

Soldier beams and lagging are what?

A

Sheet piling

9
Q

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

A

Vertically

10
Q

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

A

Underpinning

11
Q

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?

A

Foundation is bearing on clay

12
Q

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

A

True

13
Q

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

A

True

14
Q

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

A

False

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

15
Q

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

A

True

16
Q

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?

A

Southern CA

17
Q

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?

A

Differential settlement

18
Q

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

A

Friction piles

19
Q

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

A

False

They may also be placed on engineered fill.

20
Q

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

A

False

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