UFC 4-151-10
10 September 2001
incrementation, protective coatings and encasement for the following waterfront metallic
structural systems:
Steel sheet piling bulkheads
Steel Bearing piles for piers
Steel fender piles for piers
Mooring components
In marine environments, CPS are most effective and can greatly extend the
life of the submerged zones of steel waterfront structures. The splash and atmospheric
zones will require reapplication of coatings and encasements for maximum system
service life. Partial concrete encasement of steel piles creates a zone of high potential at
the concrete encasement-to-bare steel pile interface where submerged. Provide CPS in
these circumstances in addition to the partial encasement.
5-3.2
Economic Feasibility. Evaluate providing CPS for the following buried or
submerges systems:
Existing steel waterfront structures
Reinforcing steel in concrete
Base implementation of CPS on life-cycle economics. Requirements for
CPS will be determined by the corrosion engineer.
5-3.3
Rehabilitation. When rehabilitating existing steel pile bulkheads by driving
new sheets outboard of the existing, include the following requirements for the CPS:
Electrically isolate new piling from old piling
Electrically isolate tie rods from existing sheet piling by cutting a hole in the
old piling and providing a dielectiric sleeve through the pile.
Coat tie rods and new piling on all sides.
Consider CPS as part of the total corrosion protection system. Use
conventional soil side anodes to protect the seaside and landside of the pile
and to protect the tie rods if field tests indicate this to be feasible.
Otherwise, consider using a deep anode bed system. Waterside anodes
are appropriate only in areas not subject to maintenance dredging, water
turbulence from ship/boat traffic, normal or storm generated heavy wave
action, or constant movement of the sea bottom. Conduct a site survey to
5-3
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