Chapter 2 - Online Quiz Flashcards
The item shown in the sketch found on page 76 (fig 2.65) is a synthetic rubber material. What is it called?
Waterstop
Earth Reinforcing can be an economical alternative to the use of what?
Conventional retaining walls
A waterstop is used to lower the water table in the vicinity of a building. T/F
False
Well points are used to lower the water table.
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?
Caissons
Which of the following is not a method of bracing vertical sheeting in a deep excavation? Cross lot, well points, rakers, or tiebacks?
Well points
Slurry walls are associated with what?
Deep foundations
Wood piles may be used without a decay-preventative treatment if they lie totally beneath the water table. T/F
True
Soldier beams and lagging are what?
Sheet piling
A drainage mat (drainage blanket) is usually placed how?
Vertically
Which of the following deals with “strengthening and/or stabilizing foundation of existing buildings? Bentonite slurry, caissons, underpinning, geotextile fabric, or well points?
Underpinning
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?
Foundation is bearing on clay
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
True
The soil around an excavation can sometimes be stabilized by soil reinforcing or nailing. T/F
True
Combined footings are used to save money in cases where concrete prices are high. T/F
False
Combined footings are used when columns are on a property line. Legally footing cannot extend over property lines.
Bentonite clay makes an excellent waterproof membrane around a basement. T/F
True
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?
Southern CA
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?
Differential settlement
Which deep foundations system would you specify if the bearing strata was very far (say, 3,000 ft) below the ground surface?
Friction piles
Shallow footings may only be placed on undisturbed, natural soil. T/F
False
They may also be placed on engineered fill.
A tieback must always be anchored in rock. T/F
False
It can also be anchored in a stratum of stable soil.
