valmont Ezy-Guard HC User manual

HIGHWAY
High-Containment
Roadside Safety Barrier
Product Manual
EZY-GUARD HC High Containment Roadside Safety Barrrier
www.valmonthighway.com
MASH TL4
COMPLIANT
MASH TL3
COMPLIANT
Release 08/21

Release 08/21
High-Containment Roadside Safety Barrier
2
HIGHWAY
1.0 IntroductIon
Introducing Ezy-Guard HC, a member of
the Ezy-Guard family, the next generation
steel guardrail barrier providing superior
motorist safety and more metres of barrier
for your dollar.
Ezy-Guard HC is crash tested to the latest
performance standard distinguishing it
from all existing public domain guardrail
barrier systems in Australia.
The Z-post profile shields post edges
from vulnerable road users and provides
sectional strength when driving through
difficult conditions.
An Ezy-HC-Carriage is used to secure the
Thrie-beam rails to the posts eliminating
the requirement for blocking/offset pieces
and rail stiffening plates. This unique
connection provides a soft ride-down
for the occupants and smooth vehicle
containment and redirection.
2.0 SpecIfIcAtIonS
Ezy-Guard HC Z-Post Length: 2,000mm
Ezy-Guard HC Z-Post Mass: 19.5kg
Ezy-Guard HC System Mass: 28.8kg per metre
Rail Height Above Ground: 980mm
Z-Post Height Above Ground: 970mm
Post Spacing: 2,000mm
Ezy-Guard HC System Width: 245mm
MASH TL3 Crash Test Deflection: 1.16m
MASH TL4 Crash Test Deflection: 1.77m
Ezy-Guard HC Thrie-beam rails and Z-posts
are manufactured from hot-rolled steel
flat products in accordance with AS/NZS
1594. These items are hot dip galvanised
in accordance with AS/NZS 4680 after
fabrication leaving no surface untreated.
State specific product acceptance details are
available upon request from your local Ingal
representative. Acceptance of product variants
should be confirmed prior to installation.
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140

Release 08/21
High-Containment Roadside Safety Barrier
3
HIGHWAY
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HC Carriage
10004116
Splice Bolt M16 x 32
10001248
Smart Carriage
10004115
Oversized M16 Nut
10001239
Carriage Bolt M16 x 30mm
10001832
BArrIer SeLectIon tABLe
Guardrail
System
Performance
Class Deflection Surface Mount Option
Environmental
Protection
Ezy-Guard Smart MASH TL3 1.65m Yes Hot Dip Galv to AS/NZS 4680
Ezy-Guard 4 MASH TL3
NCHRP-350 TL4 1.65m Yes Hot Dip Galv to AS/NZS 4680
Ezy-Guard HC MASH TL4
MASH TL3
1.77m
1.16m Yes Hot Dip Galv to AS/NZS 4680
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239
Approach Transition Rail 1905mm
10001809
Departure Transition Rail 1905mm
10001811
W Beam 4000mm NLL
10000977
Thriebeam 4000mm NLL
10000837
Ezy-Guard HC Post 2000mm
10005540
Ezy-Guard 4 Post 1650mm
10007390
HD Carriage
10004116
Smart Carriage
10004115
Hex Bolt M16 x 30mm
10001832
Splice Bolt M16 x 32
10001248
Oversized M16 Nut
10001239

Release 08/21
High-Containment Roadside Safety Barrier
4
HIGHWAY
Figure 1: Comparison of Crash Test Impact Severities
3.0 crASH teSt AnALYSIS
Crash test guidelines provide a minimum set of requirements
that a roadside barrier has to meet in order to demonstrate
its satisfactory impact performance.
Whilst crash test guidelines cannot include all possible impact
conditions that may be experienced in the real world, the
crash test matrix is selected to represent a “worst practical
condition” for a roadside barrier impact.
Ezy-Guard HC has been fully crash tested and evaluated
according to the specifications for Test Level 4 (TL4) of the
AASHTO Manual for Assessing Safety Hardware (MASH).
The MASH specification is an update to and supersedes
NCHRP Report 350 for the purposes of evaluating new safety
hardware devices.
In the revised standard AS/NZS 3845.1:2015, MASH has
been nominated as the basis of testing procedures for road
safety barrier systems.
The MASH TL4 crash test matrix requires the following
impacts;
• 1,100kg car travelling at 100km/h and 25 degrees.
•2,270kg pick-up travelling at 100km/h and 25 degrees.
•10,000kg truck travelling at 90km/h and 15 degrees.
Crash test impact conditions are defined by the mass, speed,
and angle of the impacting vehicle. Crash test standards
and performance levels can be compared by calculating the
impact severity (IS).
IS = ½ M (V sin θ)2
Where IS is the impact severity in joules (J), M is the test
inertial mass of the vehicle in kilograms (kg), V is the impact
speed in metres/second (m/s) and θis the impact angle in
degrees.
M
A
S
H
T
L
4
M
A
S
H
T
L
3
N
C
H
R
P
3
5
0
T
L
4
209.3 kj Impact Severity: 10,000kg rigid
truck travelling at 90km/h and 15 degrees
156.4 kj Impact Severity: 2,270kg pick-up
truck travelling at 100km/h and 25 degrees
132.3 kj Impact Severity: 8,000kg
truck travelling at 80km/h and 15 degrees

Release 08/21
High-Containment Roadside Safety Barrier
5
HIGHWAY
Figure 2: Ezy-Guard HC Considerations for
Vulnerable Road Users
4.0 conSIderAtIon for VuLnerABLe
roAd uSerS
Vulnerable road users include motorcyclists, pedestrians,
cyclists and other road users. Ezy-Guard HC has been
designed to provide consideration to vulnerable road users
as follows:
Rounded Post Corners.
The Z-post contains smooth, rounded post edges and
corners mitigating the risk and severity of fractures and/or
contusions.
Energy Absorbing, Ductile Z-Posts.
The Z-posts are designed to yield by bending near ground
level. This bending action absorbs impact energy reducing
the potential for post fracturing.A fractured or split guardrail
post presents a significant laceration hazard to vulnerable
road users.
The Ezy-Guard HC design does not contain any elements that
become projectiles and there are no aggressive edges.
Shielded Posts.
The innovative design of Ezy-Guard HC shields the top of the
supporting Z-posts by positioning the top of the rail above the
posts. This eliminates dangerous snag points, reducing the
potential for the barrier to dismount motorcyclists or cyclists.
This is a significant safety benefit compared to traditional
guardrail and cable barrier systems.