UFC 4-151-10
10 September 2001
NOTE: Use of sheet metal covers as end protection for fender piles is
discouraged because they are easily torn by impact and become a personnel hazard.
However, sheet metal covers for bearing piles under pile caps provide good protection. In
general, fit structural piling with waterproof caps.
2-2.3
Precast (Including Prestressed) Concrete Piles. These piles are
2-2.3.1
Minimum Dimensions. The minimum dimensions are 304.8 mm (12 in)
for piles of uniform section and 203.2 mm (8 in) for tapered piles.
2-2.3.2
Cover. The minimum clear cover for reinforcement for permanent
installations in salt water is 76.2 mm (3 in). For temporary installations and in fresh water,
cover requirements may be relaxed to conform to the requirements of NAVFAC DM-2.04,
2-2.3.3
Minimum Reinforcement. Excluding pre-stressed piles, the minimum
longitudinal reinforcement shall be 1.5 percent of the total cross section.
2-2.3.4
spirals and ties in accordance with the American Concrete Institute provisions for
structural columns except provide additional ties or spirals at ends as indicated in
2-2.3.5
Impact. Forces induced by handling and driving shall be imposed
magnified by a load factor of 1.25 (allowable overstress of 33 percent).
2-2.3.6
Jetting. Where jetting is contemplated, the jet pipe may be cast into the
pile.
2-2.3.7
Concrete Strength. The minimum compressive concrete strength required
is 34.47 MPa (5,000 psi) for pre-stressed concrete, and 27.58 MPa (4,000 psi) for non-
pre-stressed concrete.
2-2.3.8
Standard Details. For information on standard details, refer to PCI STD-
112.
2-2.3.9
MPa (700 psi).
2-2.3.10
Minimum Wall Thickness (Cylindrical Piles or square Piles With
Voids). Provide a minimum of 3.81 mm (1-1/2 in) clear cover on inside (void) face. In no
case may wall thickness be less than 102 mm (4 in).
2-7
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