NU-FLEX
NU-FLEX is a flexible barrier system available for use without offset blocks for 31″ rail height applications. The system is crash-test proven to guard against collisions with fixed objects or hazards.
System features include:
- Crashworthy to MASH Test Level 3 criteria and deemed eligible by the FHWA for roadside applications with design speeds up to 65 mph and wherever a maximum dynamic deflection of 88” [2235] is allowed. (Ref. B-288)
- Does not require offset blocks. The narrow profile of this barrier is valuable when roadside space is limited.
- RIB-BAK 4 lb./ft. U-Channel post is lighter, easier and faster to install than S3x5.7 I-beam posts, and are available galvanized or powder coated.
- Through-bolt slot works to maintain rail height during impact and allows for a more tolerant installation height than other comparable modified weak-post systems.
- Utilizes same post spacing and flying splice rail elements as comparable modified weak-post guardrail systems, but with less hardware, no soil plate and reduced normalized deflection.
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Normalized Dynamic Deflection
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Weak Post Guardrail System (476460-1-7):
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105.6″ |
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NU-FLEX™ (690900-NSM17):
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79.0″ = A 25% REDUCTION IN NORMALIZED DEFLECTION |
*Source Texas A&M Transportation Institute
NU-FLEX BARRIER SYSTEM
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Guardrail
Use with standard w-beam (AASHTO M-180, Class A or B, Type II) |
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W-Beam Height
25″ Center-Line of Rail |
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RIB-BAK U-Channel
4 lb./ft.; 6’ 6”; Nucor Grade SP-80 |
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Post Spacing
6’ 3” Typical |
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Offset Blocks
Not Required |
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Slope
6 to 1 or less |
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MASH Tested
MASH TL-3 Compliant |
