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 STRUCTURAL
Grounds-Continued
n Valley Drainage Channels including Culverts and Lateral Drains and Tile
at Entrance Points:
overflow
stoppage
silt
debris
bank vegetation
erosion
caving
sloughing
scour
n Vegetated Waterways:
inadequate vegetation fullness and cover in relation to ground
surface area that should be shielded
erosion of waterway and along sides
debris
overflow
n Fill Slopes on Barricades, Highways, Railways, Airfield Runways, Igloos
and other Soil-Covered Buildings:
erosion
burning
steepness
lack of vigor and insufficient vegetation coverage for protection
against beating rain and direct sunshine
inadequate fill depth at top of slope wherever buildings and
weather conditions necessitate variations on different slopes
inadequate surface runoff piping
insufficient thickness of organic mulch (gravel, slag, etc)
5-31
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