19 June 2001
Problems associated with mobilization of equipment, personnel,
and materials to accomplish repairs/maintenance.
REFERENCES. Materials used to develop repair techniques and planning
factors outlined in this section have been taken, in part, from:
Scheffer, T.C., Observations and Recommendations Regarding
Decay in Naval Waterfront Structures, Forest Products Laboratory,
Morrell, J. J. and et. al, Marine Wood Maintenance Manual: A
Guide for Proper Use of Douglas-fir in Marine Exposures, Forest
Research Lab, Oregon State University Research Bulletin 48,
Childs Engineering Corp., Survey of Techniques for Underwater
Maintenance/Repair of Waterfront Structures, Revision No. 1, for
the Naval Civil Engineering Laboratory, December 1985.
Southern Pine Council, Marine Construction Manual: A Guide to
Using Pressure-Treated Southern Pine in Fresh and Saltwater
Applications, October 1994.
PLANNING THE REPAIRS. Repairing timber structures will be
controlled by the availability of skilled personnel and equipment. In many cases
structural repairs, particularly those involving bearing and sheetpiling, will be
done by contract.
Reviewing Inspection Reports. The initial planning step must involve
a review of prior inspection reports to determine the scope and rate of damage or
deterioration, and specific operational constraints placed on the facilities because
established, determining how to do the repairs (whether in-house or by contract)
must be determined.
Engineering Considerations. Any repair of structural members will
require experienced design professionals with knowledge of local tidal conditions,
building codes, materials, substrate analysis, and construction practices.
Special Skill Requirements. Surface repairs covering pier decking,
string pieces, stringers, pile caps, braces, and fender piles require skills common
to the wharf-building trade. Underwater repairs, however, require special skill
levels that may not be available with in-house forces. This includes how to
remove marine growth, jetting or air lifting procedures, underwater cutting and