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Inertial Barrier (Sand Barrel arrays)
Purpose: Inertial barrier is an end treatment for concrete barrier and to mitigate fixed objects. This system does not provide redirection from a side impact.
Description: This system consists of an array of plastic containers filled with varying weights of sand.
Functionality: The inertial barriers slow
an impacting vehicle by the transfer of the momentum of the vehicle to
the mass of the barrier. This system is not suitable where space is limited
to less than the widths shown in the Standard Plans. Whenever possible,
align inertial barriers so that an errant vehicle deviating from the roadway
by 10 degrees would be on a parallel path with the
attenuator alignment
(See Standard C-12). In addition, inertial barriers
do
not provide any redirection and are not
appropriate where high angle impacts are likely.
Foundation: A paved surface is not required.
Slope: If the site has excessive grade or cross slope, additional
site preparation or modification to the units in accordance with the manufacturer's
literature is required. Excessive is defined as steeper than 5% for inertial
barriers.
Manufacturer/Supplier: Energy Absorption Systems
Energite
III
Universal
Barrels (Fitch)
Manufacturer/Supplier: Traffix Devices, Inc.
Big Sandy Impact Attenuator Sand Barrels
QPL Product Information
