Pile Driving UPDATED ACTUAL Questions and CORRECT Answers
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Pile Driving
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Pile Driving
Pile Driving UPDATED ACTUAL
Questions and CORRECT Answers
Air/Steam Hammer - CORRECT ANSWER- Impact pile driver powered by compressed
air or steam; action may be single, double, differential or compound.
Amplitude - CORRECT ANSWER- The magnitude of the vertical movement of the pile
produced...
Pile Driving UPDATED ACTUAL
Questions and CORRECT Answers
Air/Steam Hammer - CORRECT ANSWER✔✔- Impact pile driver powered by compressed
air or steam; action may be single, double, differential or compound.
Amplitude - CORRECT ANSWER✔✔- The magnitude of the vertical movement of the pile
produced by a vibratory unit, may be expressed in inches or millimeters.
Anchor Pile - CORRECT ANSWER✔✔- A pile connected to a structure by one or more ties
to furnish lateral support or to resist uplift.
Auger Grout (or Cast) Pile - CORRECT ANSWER✔✔- Pile formed by boring a hole with
an auger and placing pressurized grout in the hole through the hollow center of the auger. The
auger is withdrawn at a steady rate as the grout is placed.
Auger - CORRECT ANSWER✔✔- A helically shaped corkscrew-like tool with a power
driving head on top and cutting head on the bottom designed to bore holes in the earth by
drilling, either with or without the supplementary use of water. Also, refers to a hand-
operated soil sampler.
Augercast - CORRECT ANSWER✔✔- A proprietary Augered Pile. High strength grout is
forced down the center of a flight auger to form a shaft as the auger is withdrawn.
Augered Pile - CORRECT ANSWER✔✔- Concrete pile cast-in-place in an augered hole,
which may be belled at the bottom. Suitable where the soil is dry and the hole will stand
open. Also called drilled pier or drilled shaft
Automatic Pile Hammer - CORRECT ANSWER✔✔- A power pile hammer in which the
fluid valve is automatically thrown at both ends of the ram stroke to produce a regular cycle
Bale - CORRECT ANSWER✔✔- One of the major components of the hammer system that
surrounds and protects the hydraulic actuator and hoses from damage and is the attachment
point for the lifting sheave.
,Batter - CORRECT ANSWER✔✔- A pile driven at an inclination from the vertical to
provide more stability.
Bearing Capacity - CORRECT ANSWER✔✔- Allowable pile load as limited by the
provision that the pressures developed in the materials along the pile and below the pile tip
shall not exceed the allowable soil bearing values.
Bearing Pile - CORRECT ANSWER✔✔- A supporting pile for a structure that can be of
wood, concrete or steel in any number of shapes and whose bearing is reached by point or
end bearing, friction, or friction and compaction, or a combination.
Cast-In-Place Pile - CORRECT ANSWER✔✔- A concrete pile poured (either with or
without a metal casing) in its permanent location in the ground. Also called an in-situ pile or
caisson.
Centrifuge - CORRECT ANSWER✔✔- A testing device to approximate gravity-induced
horizontal stresses to compensate for scale used in modeling pile behavior.
Cofferdam - CORRECT ANSWER✔✔- A steel or concrete box erected in the water and then
pumped dry to provide a dry work area.
Compacted Concrete Pile - CORRECT ANSWER✔✔- A cast-in-place pile formed with an
enlarged base. Dry concrete in the base is placed in small batches, which are compacted by
heavy blows while plastic.
Composite Piles - CORRECT ANSWER✔✔- A pile made up of two or more types or sizes
of piles joined together. The connection between the components is designed to transmit load
and to prevent separation during and after construction.
Compression Leads - CORRECT ANSWER✔✔- Pile hammer leads designed to withstand
compressive forces from pile extraction operations (i.e., as used in pulling sand drains or
mandrels)
, Convertible Diesel Pile Hammer - CORRECT ANSWER✔✔- A diesel hammer which can be
operated either open-end (single-acting) or closed-end (double-acting).
Cored Pile - CORRECT ANSWER✔✔- A pile formed by removing earth prior to pile
installation.
Cushion - CORRECT ANSWER✔✔- Material inserted between the ram of the pile hammer
and the driving cap and also between the driving cap and the pile. This material provides a
uniform distribution of impact forces. Typical materials used for cushioning include steel,
aluminum, coiled cable, and wood.
Cutoff - CORRECT ANSWER✔✔- The prescribed elevation at which the top of a driven
pile is cut. Also, the portion of pile removed from the upper end of the pile after driving.
Cylinder Pile - CORRECT ANSWER✔✔- Hollow circular pile constructed of concrete or
steel.
Density - CORRECT ANSWER✔✔- The weight or mass per unit of volume. In reference to
soil, the term usually indicates weight per unit volume and is synonymous with unit weight.
Design Load - CORRECT ANSWER✔✔- The load which the pile is intended to carry
without excessive movement and with an acceptable factor of safety against plunging failure.
Diesel Hammer - CORRECT ANSWER✔✔- A pile hammer, which carries its own diesel
fuel to generate power internally.
Differential-Acting Hammer - CORRECT ANSWER✔✔- A fluid-powered hammer in which
fluid lifts the ram in the upstroke and is exhausted into and combined with addition fluid
entering over the piston to take advantage of differential piston areas to accelerate the ram
and to act in concert with gravity on the down stroke
Double-Acting Hammer - CORRECT ANSWER✔✔- A closed pile hammer in which
steam/air/diesel explosion/etc. is used both to lift the ram and to accelerate the down stroke.
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