valmont Ezy-Guard HC, Руководство по эксплуатации продукта

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Release 08/21
High-Containment Roadside Safety Barrier
15
HIGHWAY
7.12 Installation Sequence
The following written instructions should be read in
conjunction with Valmont Highway’s drawings.
A generic Safe Work Method Statement is available from
Valmont Highway to assist in the safe installation of Ezy-
Guard HC.
Only items purchased from Valmont Highway shall be used
for the construction of Ezy-Guard HC.
1. Ensure the area has been inspected for underground
hazards and that suitable traffic control is in place.
2. Post locations are marked ensuring any fixed object
hazard to be protected is located outside the expected
dynamic deflection of the barrier.
3. The post in relation to the direction of traffic is orientated
as per Figure 10 and 11.
4. Posts are driven directly into the ground and should
be vertical. The post installation process shall not
cause damage to the post, such that it reduces the
effective operation of the safety barrier or its design
life, or introduces sharp tearing edges, nor shall it cause
damage to pavement. If the Ezy-HC-Carriage cannot
freely move as it is attached to the post as a result
of deformation of the post during installation, then
the post shall be replaced. The use of a vibrating post
hammer will reduce deformation to the top of the post
and install the post at a controlled rate.
5. Alternate to driving the posts, a minimum 200-300mm
hole can be augured and the post placed in the hole.
The posthole is then backfilled with the material that
was excavated. If installing in soil, the material should
be placed in layers of 150mm and suitably compacted to
not less than the density of the surrounding layers.
6. Posts are spaced at 2m – 1,905mm spacings are required
on transitions to w-beam - and reduced spacings are
required where requested by engineer.
7. The height of the Z-post above ground level is 970mm.
8. The Ezy-HC-Carriage is attached to the face of the post.
The Ezy-HC-Carriage will come to rest on the positioning
lug fabricated on the Z-post.
Figure 10: Z-Post Orientation
Figure 11: Ezy-Carriage Orientation
Figure 12: Attachment of Carriage to Z-Post
TRAFFIC FLOW
Carriage resting
on lugs
TRAFFIC FLOW