Low deflection, heavy vehicle containment.
RAMSHIELD® High Containment
- Compliant with MASH Test Level 4 and MASH Test Level 3
- MASH TL4 Deflection: 1.1m (Best in Class)
- MASH TL4 Working Width: 1.2m (Best in Class)
- Reduced point-of-need (just 9.5m downstream of asymmetric transition)
- Same C-post profile as used in Australian public domain systems
- Post spacing: 2m
- Narrow width: just 230mm
- Australian designed and manufactured
RAMSHIELD® High Containment FAQs
What crash test impacts have been performed with RAMSHIELD® HC?
RAMSHIELD® HC thrie-beam safety barrier has been crash tested in accordance with MASH Test Level 4 as follows:
- 10,000kg rigid truck travelling at 90km/h and 15 degrees. Impact energy of 209kJ.
- 2,270kg pick-up truck travelling at 100km/h and 25 degrees. Impact energy of 156kJ.
- 1,100kg passenger car travelling at 100km/h and 25 degrees. Impact energy of 76kJ.
What were the recorded deflections and working widths of RAMSHIELD® HC?
|Impact Condition||Dynamic Deflection||Working Width|
10,000kg rigid truck travelling at 90km/h and 15°
2,270kg pick-up truck travelling at 100km/h and 25°
What is the definition of dynamic deflection?
Dynamic deflection is the maximum lateral displacement of the barrier during a vehicle impact.
What is the definition of working width?
The working width is the minimum distance required to prevent an impacting design vehicle from colliding with an object behind a barrier system. This includes both the dynamic deflection of the barrier and the extra width to allow for the roll (vertical rotation) of an impacting vehicle.
Working width is an important design consideration when shielding fixed hazards such as trees, sign supports or bridge piers.
What is the point-of-need of RAMSHIELD® HC?
The point of need (PON) is the location along the barrier system where containment and redirection of errant vehicles commences. The distance between the leading and trailing points of need is referred to as the length of need.
The MASH TL4 PON provides containment of a 10,000kg rigid truck travelling at 90km/h and 15 degrees. The MASH TL4 PON for RAMSHIELD® HC is 9.5m downstream of the asymmetric transition.
The MASH TL3 PON provides containment of a 2270kg pick-up truck travelling at 100km/h and 25°. When anchored with MSKT terminals the MASH TL3 PON is the 3rd post of the end terminal.
What is the installed height of RAMSHIELD® HC?
RAMSHIELD® HC has been crash tested with the top of the thrie-beam guardrail 1000mm above ground level. The thrie-beam guardrail is positioned approximately 30mm above the top of post. This is an important design consideration for vulnerable road users.
How does RAMSHIELD® HC connect to RAMSHIELD® W-Beam or MSKT Terminals?
The use of an asymmetric transition is required to transition from thrie-beam to w-beam guardrail. The asymmetric transition panel is 1905mm long.
The asymmetric transition lowers the height to top of the rail by 200mm, making it compatible for use with RAMSHIELD® w-beam guardrail and MSKT terminals, which are installed with a rail height of 800mm above ground level.
What type of post is used for the installation of RAMSHIELD® HC?
RAMSHIELD® HC uses the same C-post profile as used for Australian public domain systems. The separation of the thrie-beam rail from the post is achieved by a release tab incorporated into the post. The tab controls the release of the rail within the impact zone providing stable vehicle containment and redirection with minimal vehicle roll.
The sectional strength of the C-post limits barrier deflection, an important design consideration when shielding roadside hazards.
What is the length of each post?
The RAMSHIELD® HC post is just 1860mm long and is embedded 890mm into the ground.
Is RAMSHIELD® HC suitable for installation in mowing strips, rock and deep lift asphalt?
Yes. RAMSHIELD® HC posts yield by bending near ground level. Restraining these posts below ground does not alter the yielding action of the RAMSHIELD® HC post.
Why does the installed position of the Ramshield® post sit below the top of the W-Beam guardrail?
Positioning the top of the RAMSHIELD post below the top of the w-beam guardrail eliminates a snag point for motorcyclists.
Does RAMSHIELD® HC require special guardrails or fasteners?
No. RAMSHIELD® HC is installed using standard w-beam guardrail panels and standard guardrail fasteners as per Australian state road agency designs.