9-64.
What component of a diesel hammer
has compression rings and is held
in place by buffet bolts?
1.
The ram piston
2.
The universal drive cap
3.
The vibration damper
4.
The anvil block
965.
The length of free travel of the
ram-piston from the bottom of the
stroke to the safety catch lip at
the top is what length, in inches?
1.
69
2.
89
3.
109
4.
118
9-66.
The top of the cushion block should
be high enough to prevent the
hammer shroud from fouling on the
rim of the drive cap.
1.
True
2.
False
9-67.
What term is used to describe a
pile-driving hammer driving piles
without the use of leads?
1.
Free hammer
2.
Flying hammer
3.
Floating hammer
4.
Glide hammer
Learning Objective:
Recognize
principles of piledriving
techniques and terminology.
9-68.
What term is used to describe when
a pile vibrates too much laterally
from the blow of the hammer?
1.
Springing
2.
Bouncing
3.
Refusal
4.
Bearing
969 .
What term is used to describe the
9-70.
9-71.
9-72.
9-73.
9-74.
condition reached when a pile being
driven by a hammer has a 1-inch
penetration per blow?
1.
Springing
2. Bouncing
3.
Refusal
4.
Bearing
What term is used to describe a
pile supported by skin friction
alone?
1.
Bearing
2.
Batter
3.
Lateral
4.
Friction
The longer a pile stays in the soil
the more compact the soil becomes;
therefore, the greater the
resistance to pulling will be.
1.
True
2.
False
What term is used to describe
a group of piles driven close
together in water and tied together
so that the group will withstand
lateral forces?
1.
Batter
2.
Anchor
3.
Dolphin
4.
Fender
What type of pile is made by
pouring concrete into a tapered
hole or cylindrical form previously
driven into the ground?
1.
Precast concrete
2.
Cast-inplace concrete
3.
Composite
4.
Sheet
Which of the following piles is a
commonly used type of sheet pile?
1.
Straight web
2.
Shallow arch
3.
Deep arch
4.
All of the above
69