Roads and Railways Applications.
Roads
and railways contribute most of the noise in and around a city. The
noise they create is more like a line or cylinder as opposed to a
point or sphere of source, meaning car noises only decrease by 3db
for each doubling of distance from the source.
Barriers
have been around and modified for decades. Some of the variables that
affect the outcome of traffic barriers are the line of sight
(transmitted path), Angle of incident, related to the (diffracted
path), and the indirect path of transmission (reflected path) to the
receivers of the noise.
In
addition:
-
Barriers
need to be as close to the noise or receiver as possible.
-
The
greater the barrier height from the line of sight, the greater the
attenuation.
-
Barriers
should be a solid, >20kg, m2 and airtight. However the materials
used need not exceed the attenuation from diffraction effects.
-
End
diffraction effects will considerably hinder the attenuation of a
barrier.
Make
sure the barrier is four times the length of the distance from the
barrier to the receiver!
Acoustiblok
"All Weather Sound Panels" are an excellent resolve for
many types of issues involving roadway and railway noise. These
panels can be implemented in an infinite configuration of height and
length. The panels are impervious to the elements; hurricane tested
at over 434 kp/h (3011ksm), mass and absorption factors, and can be a
permanent or temporary solution.
Railway
noise can also be treated in a similar manner. There may be tighter
constraints in and around train stations and rail lines. The
thickness of Acoustiblok panels provides an easy solution near the
tracks. Our panels can be tied to a railing or attached to an
existing wall to absorb some of the more critical and annoying high
frequencies from train motor spool up, and can easily follow a twisty
track along the country side.
Standard
sizes of panels are
-
(1.22m
(W) x 3.66m (H) x 61mm (D)
-
(1.22m
(W) x 3.05m (H) x 61mm (D)
-
(1.22m
(W) x 2.44m (H) x 61mm (D)
-
(1.22m
(W) x 1.83m (H) x 61mm (D)
-
(1.22m
(W) x 1.22m (H) x 61mm (D)
Panels
are built to order in house, please allow a 3-4 week production time
and shipping and handling.
