INGAL Ezy-Guard 4, Product Manual, Page: 16 / 34

Roadside Safety Barrier
16
Release 07/22b
9. Rails are attached to the Ezy-Carriage using the
M16x30mm post bolts. The post bolts are identified
by the socket recess located in the head of the
bolt. The bolts are tightened to snug tight using a
10mm hex. key.
10. Rails are spliced together at every second post
using M16x32mm mushroom head bolts and
oversized nuts. There are 8 bolts required per splice
connection. A pinch bar may be used to assist in
the alignment of splice holes. The use of a driving
pin to elongate the slots is NOT to be used since
this may cause tearing of the rail at the slot location.
The bolts are tightened to snug tight.
11. Rails are orientated so that no leading edge is
presented to the traffic face as shown in Figure 18.
12. It is recommended that posts be installed only a
few metres ahead of rail assembly to ensure correct
post spacing and alignment. On curves, the rails
can be used as a template and laid on the ground
to determine post locations.
13. Where possible, the barrier should form a smooth
line vertically and horizontally when viewed along
the line of the system, free from humps, sags or
other irregularities..
14. The Ezy-Guard 4 components are to be free from
splits, burrs or sharp edges after installation. Any
minor damage to the galvanise coating is to be
repaired by applying two coats of an organic zinc
rich paint.
15. Any disturbed pavement or material around a
post shall be left dense, tight, and smooth so that
resistance to water penetration is similar to that of
the adjacent surface.
7.13 Back to Back W-Beam Installation
The Ezy-Guard 4 system can also be used in median
applications where the W-Beam is installed on both sides
of the post. This configuration requires a special post with
resistance tabs on both sides of the post. The installation
procedure is the same as for a single sided installation with
steps 8 thru 15 repeated on the opposite side of the post.
Refer drawing Ezy-SM-035 for further assembly detail.
7.14 Installation Tolerances
•
The tolerance on height of the barrier shall be
+25mm/-0mm.
•
The tolerance for the line of the barrier shall be plus or
minus 20mm in plan view.
•
The tolerance for departure from the upright axis shall
be plus or minus 15mm at the top of the barrier.
• The tolerance on post spacing shall be plus or minus
25mm.
8.0 Maintenance
8.1 Preventative Maintenance
It is recommended that annual inspections be performed
to ensure the following;
•
The system is appropriately delineated;
•
Debris has not accumulated around the system that
may impede the performance of the barrier or the
trajectory of an impacting vehicle;
•
The system is suitably anchored with appropriate
terminals and/or transitions. If the system is anchored
with terminals, the cable assembly shall be taut and
tensioned to its recommended value; and
•
All splice bolts and post bolts are snug tight.
Figure 16: Post Bolt
Figure 17: Splice Bolt & Nut
Figure 18: Orientation of Rail Lap
TRAFFIC
DIRECTION
TRAFFIC
DIRECTION