Custom Search
|
|
|
||
 STRUCTURAL
Storm Drainage System-Continued
n Manhole Bottoms:
clogging
restricted flow
silt
sewer pipe fragments (indicating broken pipe)
invert elevation of outlet pipe not flush with bottom
n Culverts: Cracks in pavement over subsurface drainage and culverts
indicate washout of soil from cracked or broken pipe. Obstructions are
indicated by restricted flow after prolonged rainfall:
sediment
obstructions at inlets and outlets
ditch bottoms not flush with pipe inverts
noncompacted or previous soil resulting in channeling
n
Gutters and Ditches:
cracked, broken, or eroded concrete surfaces
defective expansion joint
misalignment
obstructions
ponding of water
silting or sloughing-off of sides
inadequate side vegetation coverage necessary to prevent erosion
n Standing water which would permit mosquito breeding in drainage system:
5.2.25 Swimming Pools: Check for:
n Concrete:
cracks
breaks
spalling
exposed reinforcing
settlement
5-43
|
 
|
|
|
||
