INGAL Ezy-Guard 4, Product Manual

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Roadside Safety Barrier
6
Release 07/22b
5.4 Installation in Rock, Asphalt or Concrete
Mowing Strips
The design of the Z-post differs from traditional posts in
that it relies on the yielding of the post by bending near
ground level rather than the yielding of the surrounding
soil during a vehicle impact. This makes the Z-post suitable
for installation in rock, asphalt or concrete mowing strips.
A traditional guardrail post is designed to absorb some
crash energy through post rotation in the soil prior to post
failure. Restraining these traditional posts by setting them
in narrow holes drilled into solid rock, by setting them in
thick asphalt layers or concrete, or by placing a mowing
strip around the posts can lead to a failure of the system to
safely contain and redirect the errant vehicle.
5.5 Manual Handling
Ezy-Guard 4 uses fewer components than the public
domain guardrail systems. Z-posts weighing just 12.3kg
are 50% lighter than traditional C-posts. The lightweight
Z-post reduces manual lifting by installation crews.
The rounded edges of the Z-post provides a handlelike
grip when lifting, reducing the possibility of hand
lacerations. The Z-profile allows the installer to maintain
a firm grip and facilitates correct lifting techniques.
5.6 Locally Designed & Produced
Ezy-Guard 4 is manufactured in Australia by Ingal Civil
Products using steel manufactured by BlueScope Steel.
Z-posts and rail are stamped providing traceability to
material mechanical and chemical analysis certificates.
Hot dip galvanising is performed internally by Ingal and
daily inspections ensure zinc thickness readings are in
accordance with AS/NZS standards..
5.7 Soft Ride-Down Decelerations
The Ezy-Carriage controls the release of the w beam
rail from the Z-posts. This controlled release reduces
the potential for vehicle pocketing and provides a soft
ridedown for vehicle occupants.