INGAL Ezy-Guard 4, Руководство по эксплуатации продукта, Страница: 9 / 34

Roadside Safety Barrier
9
Release 07/22b
Figure 7: Clear Zone Requirement for the use of Departure Terminals
7.0 Installation
7.1 Terminals
Guardrail end terminals are designed to provide a soft
gating impact preventing the end rail from spearing
an impacting vehicle. Terminals also introduce tensile
and flexural strength necessary to ensure redirection
performance of the length-of-need section.
Ezy-Guard 4 is installed at a system height of 787mm,
measured to the top of the rail. This height is compatible
with our range of proprietary and public domain
terminals, refer to installation drawings.
Departure terminals should only be installed if they are
located outside the clear zone of approaching traffic. See
Figure 7. The clear zone is the horizontal width of space
available for the safe use of an errant vehicle.
The clear zone is dependant upon the speed of the vehicle.
Guidelines are contained with regulatory publications.
Terminals should be installed in accordance with the
proprietor’s drawings and specifications. Z-posts are
not to be used in the terminals unless approved by the
proprietor.
The installation of terminals will typically incorporate the
use of blocking pieces positioned between the posts
and rail. This will require the supporting posts to be
offset from the set-out line used for the installation of the
Z-posts which do not require blocking pieces.
In addition, the post spacing used in the terminals and
transitions may vary from the 2m spacing used for
installation of Ezy-Guard 4. The required post spacing
for terminals and transitions will be contained in the
proprietor’s drawings.
approach terminal barrier departure terminal
A departure terminal can
only be used if located
outside the clear zone of
approach terminal barrier departure terminal
A departure terminal can
only be used if located
outside the clear zone of
Figure 8: ET-SS Guardrail End Terminal