UFC 4-150-07
19 June 2001
drilling techniques, and jacketing and wrapping materials used in underwater
construction.
6-3.4
Equipment Requirements. Surface repairs to the pier superstructure
and fender system require equipment common to in-house shop forces.
Equipment for underwater repairs, however, may include:
High-pressure water blaster
Hydraulic grinders with barnacle buster attachment
Hydraulic drill with bits
Hydraulic power unit
Hydraulic chain saw
Concrete pump with hosing
Jetting pump and hose
Rigging equipment
Float stage and scaffolding
Clamping template for cutting piles
Special clamping equipment
Crane
6-4
REPAIR PROCEDURES. Repair procedures for waterfront wood and
timber structures are summarized in Table 6-1. Using any of the repair
techniques that follow should adhere to the preservation treatment requirements
outlined for wood and timber structures in Chapter 3.
Every effort should be made in rafting and handling to prevent
damage to treated piles and timbers, particularly in portions of the work exposed
to marine borer attack. Care should also be taken in driving piles to prevent
checking or splitting of the treated wood, and butts shall be trimmed and headed
so that the hammer will strike only untreated wood. Piles and timbers should be
inspected before and during the time they are driven or placed. Where the
protective preservative shell is broken or damaged in any way, the holes or
crevices should be repaired by drilling, and neatly and tightly plugged in
accordance with AWPA Standard M4. Where abrasions or other damages cannot
be sealed against marine borers, other protection must be provided in an
approved manner. All piles shall be handled in accordance with AWPA Standard
M4.
6-3
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