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From YouTube: Des Moines Public Works Update 2/2013
Description
Chuck Burrell of DM Public Works gives info on potholes
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https://amara.org/v/C0tBC/
A
A
We
consider
any
hole
in
the
pavement
that
causes
noticeable
impact
on
your
automobile
and
driving
an
area
in
need
of
repair
when
daytime
temperatures
melt,
residue,
snow
and
ice,
the
water
penetrates
cracks
in
the
road
surface
when
the
water
in
the
cracks
and
the
sub
base
of
the
street
freezes
and
when
temperatures
drop
at
night
it
expands
and
fractures.
The
pavement
normal
traffic
dislodges
the
fractured
materials
resulting
in
a
pothole,
the
Department
of
Public
Works
uses
special
asphalt
material
to
patch
wintertime
potholes.