RamShield High Containment
RamShield High Containment combines the sectional strength of C-posts with thrie-beam guardrail elevating the vehicle containment level to MASH TL4. The higher mounting position of the thrie-beam guardrail improves the system’s ability to contain and redirect large vehicles. The system stiffness reduces dynamic deflection, an important design consideration when shielding hazards located close to the edge of the roadway.
Crash Test Evaluation
Barrier Configuation
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Posts at 2m Centres
Posts at 2m Centres
Barrier Configuation
Posts at 2m Centres
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Barrier Configuation
Posts at 2m Centres
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Installation
Post Type
Standard Post Spacing
Post Embedment
Beam Type
System Height
Driven Post
2.0 m
890 mm
Thrie-Beam
1000 mm
Post Type
Driven Post
Standard Post Spacing
2.0 m
Post Embedment
890 mm
Beam Type
W-Beam
System Height
800 mm
Product Features
MASH TL4 Compliant
Containment of a 10,000 kg rigid truck travelling at 90 km/h and 15 degrees.
Low Dynamic Deflection
Suitable for shielding hazards located close to the edge of the roadway.
Narrow System Width
No blocking pieces required reducing the system width to just 230 mm.
Australian Designed
Intellectual property developed and owned by Safe Direction.
Product Gallery
Downloads
Product Manual
Product Data Sheet
Drawings
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Frequently Asked Questions
How does RamShield High Containment work?
RamShield High Containment achieves a controlled redirection of errant vehicles by releasing the thrie-beam guardrail from the post at an optimal load to retain rail height, limit dynamic deflection and to allow the post to collapse without tripping the vehicle. The separation of the thrie-beam guardrail from the post is achieved by a release tab incorporated into the post. The RamShield tab controls the release of the rail within the impact zone providing stable vehicle containment and redirection with minimal vehicle roll.
What is the containment level of RamShield High Containment?
RamShield High Containment has been crash tested in accordance with MASH Test Level 3 (TL3) and MASH Test Level 4 (TL4).
What is the MASH TL3 impact performance of RamShield High Containment?
The maximum dynamic deflection of RamShield High Containment during MASH TL3 crash testing was 1.0 m. The working width of RamShield High Containment during MASH TL3 crash testing was 1.1 m. These results were recorded during an impact with a 2270 kg pick-up truck travelling at 100 km/h and 25 degrees.Â
What is the MASH TL4 impact performance of RamShield High Containment?
The maximum dynamic deflection of RamShield High Containment during MASH TL4 crash testing was 1.1 m. The working width of RamShield High Containment during MASH TL3 crash testing was 2.2 m. These results were recorded during an impact with a 10,000 kg rigid truck travelling at 90 km/h and 15 degrees.
What is the difference between Dynamic Deflection and Working width?
Dynamic deflection is the maximum lateral displacement of the barrier during a vehicle impact and is typically specified when shielding batter slopes, culverts or where the hazard is low enough that it does not interfere with the possible vehicle intrusion into the area behind a barrier. 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 above-ground fixed hazards such as trees, sign supports or bridge piers.
Can RamShield High Containment be installed with closer post spacing to reduce dynamic deflection?
Yes. At constrained sites where the available clearance between the barrier and hazard is limited and insufficient to accommodate the standard barrier deflection, the spacing of the posts may be reduced to 1.0 m centres. Please refer to the Product Manual and Drawings for design guidance.
Can RamShield High Containment posts be installed on a concrete strip footing?
Yes. In circumstances where an underground service or obstruction prevents the RamShield High Containment system from being installed with posts driven into the ground, a concrete strip footing may be constructed to accommodate posts with base plates. Please refer to the Product Manual and Drawings for design guidance.
Can RamShield High Containment be installed with a motorcycle protection barrier?
Yes. RamShield High Containment may be installed with BikerShield which is positioned beneath the thrie-beam guardrail and prevents a dismounted motorcyclist from contacting the supporting posts of the guardrail barrier. The BikerShield spring brackets attach directly to the thrie-beam mid-span between posts and absorb the impact energy of the sliding rider. Please refer to the Product Manual and Drawings for design guidance.
Can RamShield High Containment connect to RamShield W-Beam?
Yes. The use of an asymmetric transition is required to transition from thrie-beam to w-beam guardrail. The asymmetric transition lowers the height to top of the guardrail by 200mm, making it compatible for use with RamShield W-Beam which is installed with a guardrail height of 800 mm above ground level.
Can RamShield High Containment be directly connected to a concrete barrier?
Wherever it is necessary to join an installation of a RamShield High Containment to a rigid barrier, including a bridge parapet, the RamShield Transition provides a smooth, snag-free connection by gradually increasing the stiffness of the system reducing the potential for vehicle pocketing. Please refer to the Product Manual and Drawings for design guidance.
