UFC 4-150-07
19 June 2001
for: number and size of piles, type and depth of bulkheads. The engineer shall
evaluate the diver's observations and determine the degree of hazard.
Figure 5-16 Inspection of Steel Structures (Above Water) Checklist
Deck Area
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Refer to either Timber Structures (Figure 5-10) or Concrete Structures
(Figure 5-12) Surface inspection Checklist, depending on construction.
Exposed Area Under Pier or Along Wharf
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Check for corrosion evidence: rust, scale and holes, in H-piles and sheet
piling, especially in the splash zone and approximately 60 cm (24 inches)
below mean water low water (Figure 5-17).
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Sound the surface with a hammer to detect any scaled steel or hollow
areas.
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Indicate the location, extent and type of corrosion (density pitting, etc.)
found.
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Check for loosening of structural connections as indicated by misalignment
of mating surfaces and by looseness or distortion of structural members
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Check for deformation or distortion of a structural member in the form of a
sharp crimp, or compression of a bearing or batter pile (Figure 5-18). This
indicates possible overloading.
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Check for deflection of steel sheet piling caused by failure of tiebacks or
overload of backfill or live load.
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Check for abrasion of steel structures as indicated by a worn, smooth,
polished appearance.
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Check for loss of foundation material caused by scour of materials from
around the piles supporting the structural element (Figure 5-18). A loss of
foundation material in front of a sheet pile bulkhead may cause kick-out of
the toe of the wall and result in total failure.
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Inspect welds for signs of corrosion, cracking or looseness.
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Inspect coating or wraps for any peeling, blistering, erosion, tears, etc.
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Inspect holes in steel sheeting for loss of backfill material through the
opening and subsidence of adjacent ground surface.
5-32
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