PILE DRIVING COMPREHENSIVE ANSWERS AND
QUESTIONS SET A+
✔✔True - ✔✔A diesel hammer perform especially well in cohesive or very dense soil
layers
✔✔ - ✔✔Diesel hammer perform especially well in cohesive or very dense soil
layers.
✔✔True - ✔✔Hydraulic impact hammers have an efficiency of 90% or better delivering
energy to the pile
✔✔True - ✔✔The five performance factors that determine effectiveness of a vibratory
driver: amplitude, eccentric moment, frequency, vibrating weight and non vibrating
weight
✔✔True - ✔✔Fixed leads offer good control of the pile position and keep the pile in
correct alignment with the hammer so that eccentric impacts that may cause local stress
concentrations and pile damage are minimized
✔✔False - ✔✔Swing leads is the preferred method of driving a pile
✔✔True - ✔✔Hydraulic leads are extremely useful in driving batter piles
✔✔False - ✔✔Hydraulic leads are less costly than standard fixed leads
✔✔True - ✔✔Templates or guide forms are commonly used when driving sheet piling
✔✔True - ✔✔The use of a water jet to assist in driving piles into sand speeds the
driving operation
✔✔False - ✔✔High pressure jetting has high flow rates and low pressure
✔✔False - ✔✔Low pressure jetting has low flow rates and high pressure
, ✔✔ - ✔✔High-pressure jetting is for driving a pile into hard soils.
✔✔ - ✔✔Low-pressure jetting is applicable for any type of pile.
✔✔ - ✔✔The depth of the preaugering should not coincide with the depth of the placed
fill.
✔✔ - ✔✔The function of a pile hammer or driver is to furnish the energy required to
drive a pile
✔✔ - ✔✔The sizes of hammers are indicated by the theoretical foot-pounds of the
energy delivered per blow.
✔✔ - ✔✔Pile-driving hammers are designated by type and size.
✔✔False - ✔✔A hydraulic hammer operates on the differential pressure of compresses
air
✔✔False - ✔✔Hydraulic pile drivers are effective when the piles are driven into water
saturated non cohesive soils
✔✔False - ✔✔pile cushions are used on steel piles or timber piles
✔✔ Air/Steam Hammer - ✔✔Impact pile driver powered by compressed air or steam;
action may be single, double, differential or compound.
✔✔Amplitude - ✔✔The magnitude of the vertical movement of the pile produced by a
vibratory unit, may be expressed in inches or millimeters.
✔✔Anchor Pile - ✔✔A pile connected to a structure by one or more ties to furnish lateral
support or to resist uplift.
✔✔Auger Grout (or Cast) Pile - ✔✔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 - ✔✔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 - ✔✔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.
QUESTIONS SET A+
✔✔True - ✔✔A diesel hammer perform especially well in cohesive or very dense soil
layers
✔✔ - ✔✔Diesel hammer perform especially well in cohesive or very dense soil
layers.
✔✔True - ✔✔Hydraulic impact hammers have an efficiency of 90% or better delivering
energy to the pile
✔✔True - ✔✔The five performance factors that determine effectiveness of a vibratory
driver: amplitude, eccentric moment, frequency, vibrating weight and non vibrating
weight
✔✔True - ✔✔Fixed leads offer good control of the pile position and keep the pile in
correct alignment with the hammer so that eccentric impacts that may cause local stress
concentrations and pile damage are minimized
✔✔False - ✔✔Swing leads is the preferred method of driving a pile
✔✔True - ✔✔Hydraulic leads are extremely useful in driving batter piles
✔✔False - ✔✔Hydraulic leads are less costly than standard fixed leads
✔✔True - ✔✔Templates or guide forms are commonly used when driving sheet piling
✔✔True - ✔✔The use of a water jet to assist in driving piles into sand speeds the
driving operation
✔✔False - ✔✔High pressure jetting has high flow rates and low pressure
✔✔False - ✔✔Low pressure jetting has low flow rates and high pressure
, ✔✔ - ✔✔High-pressure jetting is for driving a pile into hard soils.
✔✔ - ✔✔Low-pressure jetting is applicable for any type of pile.
✔✔ - ✔✔The depth of the preaugering should not coincide with the depth of the placed
fill.
✔✔ - ✔✔The function of a pile hammer or driver is to furnish the energy required to
drive a pile
✔✔ - ✔✔The sizes of hammers are indicated by the theoretical foot-pounds of the
energy delivered per blow.
✔✔ - ✔✔Pile-driving hammers are designated by type and size.
✔✔False - ✔✔A hydraulic hammer operates on the differential pressure of compresses
air
✔✔False - ✔✔Hydraulic pile drivers are effective when the piles are driven into water
saturated non cohesive soils
✔✔False - ✔✔pile cushions are used on steel piles or timber piles
✔✔ Air/Steam Hammer - ✔✔Impact pile driver powered by compressed air or steam;
action may be single, double, differential or compound.
✔✔Amplitude - ✔✔The magnitude of the vertical movement of the pile produced by a
vibratory unit, may be expressed in inches or millimeters.
✔✔Anchor Pile - ✔✔A pile connected to a structure by one or more ties to furnish lateral
support or to resist uplift.
✔✔Auger Grout (or Cast) Pile - ✔✔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 - ✔✔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 - ✔✔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.
