Nu-Guard 31™ Steel Guardrail System It has a smaller footprint, it is lighter weight and has no requirement for a blockout, this means the Nu-Guard 31™ steel post guardrail system is comparable in cost to wooden post systems and is simpler and quicker to install. Features: | | System has a smaller footprint and no blockout –maximises road area | | | Only 12g W-beam guardrail system that has been tested and approved to NCHRP 350 TL-4 providing containment and redirection of high Centre of Gravity (CoG) vehicles | | | NUCOR™ steel posts and no blockout enable faster installation (using post rammer) and with steel, longer post life | | | NUCOR™ steel posts are one third the weight and 16 times smaller in area than timber posts - which means easier handling and transport | | | High tensile galvanised NUCOR™ steel post designed for easier after-impact repair of system | | | Environmentally friendly - manufactured using recycled steel, no timber treatment by-product leaching into soil | | | Uses standard highway rail and fixings | | | Can be used as a median or roadside barrier | | | NUCOR™ steel posts designed to split on impact to avoid the guardrail tearing and reduce the incidence of wheel snagging | | | Approximately one post installed per minute possible using post rammer (dependent on operator) | | | X-350: 31 TL-3 end terminal available - can be installed at the same rail height as NuGuard 31TM | Specifications: | | Height to centre of rail must be 635mm for TL-3 and TL-4 installations | | | Tested and approved to NCHRP 350 TL-3 and TL-4 | | | Tested and meets the requirements of MASH TL-3 for a 2270kg vehicle | | | Fully approved and listed in NZTA M23 specification | | | Post weight: 14.78kg | | | Post length: 1980mm | | | Height: 0.82m | | | Width: 0.61m | | | Post footprint: 0.061m² | | | Maximum deflection is 1.2m for median and roadside applications at NCHRP350 TL-4 criteria | | | 1.050m deflection at MASH TL-3 criteria | | | No blockouts required | | | Standard highway rail and fixings | | | All components hot dip galvanised | | | Post high tensile steel | Standards and Acceptance The system has been tested to the guidelines in NCHRP 350 for a median and roadside longitudinal barrier and when correctly installed and maintained is capable of stopping, containing or redirecting an errant vehicle in a safe manner under NCHRP 350 impact conditions. Certified to NCHRP Report 350 - Text Level 3 & 4. NuGuard 31™ roadside longitudinal barrier has also been tested to the guidelines and met the requirements of AASHTO Manual for Assessing Safety Hardware (MASH) with a 2270kg vehicle at a speed of 100km and 25deg impact angle. Click here (PDF 950 KB) for FHWA Letters of Acceptance for
Nu-Guard 31™ Nu-Guard 31™ Steel Guardrail Plastic Post Cap The Nu-Guard 31™ Steel Guardrail Plastic Post Caps are an optional accessory for all Nu-Guard 31™ barriers. When impacted the Nu-Guard 31™ height will change due to the post bolt being able to move in the slot on the back of the post. This feature of the system requires that the top of the post be approximately 25mm higher than the top of the rail after correct installation. To improve safety to pedestrians and cyclists or purely for aesthetic purposes, the plastic post caps are a good way to protect the exposed steel post. The plastic post caps will fit either the Nu-Guard 31™ ‘roadside’ or ‘median’ barrier. To view images of the Nu-Guard 31™ Steel Guardrail Plastic Post Cap, Click here.
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