CM 2112 Pile Driving UPDATED ACTUAL Questions and CORRECT Answers
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Course
CM 2112 Pile Driving
Institution
CM 2112 Pile Driving
CM 2112 Pile Driving UPDATED
ACTUAL Questions and CORRECT
Answers
Non vibrating weight - CORRECT ANSWER- The weight of the part of the vibratory
hammer that does not vibrate, including the suspension mechanism and the motors.
Minimum Penetration - CORRECT ANSWER- Depth or length of pile spe...
CM 2112 Pile Driving UPDATED
ACTUAL Questions and CORRECT
Answers
Non vibrating weight - CORRECT ANSWER✔✔- The weight of the part of the vibratory
hammer that does not vibrate, including the suspension mechanism and the motors.
Minimum Penetration - CORRECT ANSWER✔✔- Depth or length of pile specified to
theoretically develop the required load bearing or uplift capacity of the soil, the required
lateral strength or a desired bearing strata.
Net Penetration - CORRECT ANSWER✔✔- The gross movement of the pile less the
rebound from a hammer blow. Net measured settlement after unloading from a test.
load test - CORRECT ANSWER✔✔- Testing capacity and the relation of load to movement
by putting a load on the bearing element before actually building upon the foundation.
penetration - CORRECT ANSWER✔✔- Gross penetration is the downward axial movement
of the pile per hammer blow. Net penetration is the gross penetration less the rebound, that is,
the net downward movement of the pile per hammer blow.
levee - CORRECT ANSWER✔✔- An embankment of earth built up along the sides or a
river to prevent its overflowing its banks.
Non-Displacement Piles - CORRECT ANSWER✔✔- Piles formed by boring or other
methods of excavation. H, open-end pipe and sheet piles are considered low-displacement
piles.
gross penetration - CORRECT ANSWER✔✔- The total downward movement of the pile
caused by the hammer blow before rebound. Maximum movement during test loading.
Penetration Resistance - CORRECT ANSWER✔✔- The resistance to penetration from
driving expressed in blows per increment of advance of the pile. The N Value in the Standard
Penetration Test.
, Pile cushions are used on steel piles or timber piles.
true/false - CORRECT ANSWER✔✔- false
What are the two major classifications of piles? - CORRECT ANSWER✔✔- sheet and load
bearing
Sheet piles are used to create.... - CORRECT ANSWER✔✔- rigid barriers for earth or water
uses: cutoff walls under dams, cofferdams, bulkheads, trench support
cofferdam - CORRECT ANSWER✔✔- A steel or concrete box erected in the water and then
pumped dry to provide a dry work area.
The abrasive resistance of plastic with steel pipe core piles makes them excellent for fender
system use.
true/false - CORRECT ANSWER✔✔- true
Soldier Pile - CORRECT ANSWER✔✔- An H or wide-flange (WF) member driven at
intervals of a few feet into which horizontal lagging is placed to support the walls of an
excavation.
reinforcing steel - CORRECT ANSWER✔✔- Steel bars with deformed little projecting
edges to insure that they will not pull out of the concrete and that the bond between the steel
and concrete will be perfect. It comes in round bars in smaller sizes and square bars in larger
sizes. It is bent or straight according to where the added strength is needed.
screw pile - CORRECT ANSWER✔✔- A pile with spiral blade fixed on a shaft or a shaped
precast pile, which is screwed into ground by a rotating force.
Ram - CORRECT ANSWER✔✔- The moving or driving part of an air, steam, diesel or drop
pile hammer which delivers an impact blow to an anvil and to the pile.
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