PILE DRIVING EXAMS EVALUATION ANSWERS AND
QUESTIONS SET A+
✔✔Composite Piles Are?
2-20 - ✔✔• Used in very hard strata to obtain penetration of the stinger and provide
tension and lateral stability
• Breakage can be a problem
• The stinger will not help the rest of the pile penetrate deeper
• Concrete filled pipes increase stiffness of pile
• Shell or mandrel driven piles are backfilled with concrete
✔✔455-6 Timber Piling
2-22 - ✔✔• Typically 8" tip and 12" butt diameters
• Common lengths 15' to 50'
• Typically made from pressure treated southern pine or Douglas fir woods
• FDOT project use includes temporary structures, docking
& fender systems, detour bridges & Bailey bridges
✔✔455-9 Sheet Piling
2-23 - ✔✔• Concrete or Steel
• Utilized for retaining systems, such as cofferdams & bulkheads
• For retaining systems, steel sheet piles are driven in the ground using either impact or
vibratory hammers
✔✔Square prestressed concrete piles are considered
non-displacement piles.
True
False
2-24 - ✔✔FALSE
2-9
, ✔✔Timber piles are used for which of the following on
which type of projects?
A.Temporary structures
B. Docking & fender systems
C. Light commercial
D. All of the above
2-24 - ✔✔D. All of the above
2-22
✔✔Steel H piles are typically used when piles lengths are
expected to be over ___ feet.
A.50
B.75
C.100
D.125
2-25 - ✔✔D.125
2-17
✔✔Concrete piles must be cured ___ days prior to ____
and the concrete has achieved the 28-day compressive
strength.
A. 3 driving
B. 7 driving
C. 7 shipping
D. 3 shipping
2-25 - ✔✔A. 3 driving
2-8
450-16.3
✔✔Hammers
2-28 - ✔✔• Air/Steam
• Diesel
Open end
Closed end
• Hydraulic
• Vibratory
QUESTIONS SET A+
✔✔Composite Piles Are?
2-20 - ✔✔• Used in very hard strata to obtain penetration of the stinger and provide
tension and lateral stability
• Breakage can be a problem
• The stinger will not help the rest of the pile penetrate deeper
• Concrete filled pipes increase stiffness of pile
• Shell or mandrel driven piles are backfilled with concrete
✔✔455-6 Timber Piling
2-22 - ✔✔• Typically 8" tip and 12" butt diameters
• Common lengths 15' to 50'
• Typically made from pressure treated southern pine or Douglas fir woods
• FDOT project use includes temporary structures, docking
& fender systems, detour bridges & Bailey bridges
✔✔455-9 Sheet Piling
2-23 - ✔✔• Concrete or Steel
• Utilized for retaining systems, such as cofferdams & bulkheads
• For retaining systems, steel sheet piles are driven in the ground using either impact or
vibratory hammers
✔✔Square prestressed concrete piles are considered
non-displacement piles.
True
False
2-24 - ✔✔FALSE
2-9
, ✔✔Timber piles are used for which of the following on
which type of projects?
A.Temporary structures
B. Docking & fender systems
C. Light commercial
D. All of the above
2-24 - ✔✔D. All of the above
2-22
✔✔Steel H piles are typically used when piles lengths are
expected to be over ___ feet.
A.50
B.75
C.100
D.125
2-25 - ✔✔D.125
2-17
✔✔Concrete piles must be cured ___ days prior to ____
and the concrete has achieved the 28-day compressive
strength.
A. 3 driving
B. 7 driving
C. 7 shipping
D. 3 shipping
2-25 - ✔✔A. 3 driving
2-8
450-16.3
✔✔Hammers
2-28 - ✔✔• Air/Steam
• Diesel
Open end
Closed end
• Hydraulic
• Vibratory
