RIB-BAK U-channel Sign Supports
RIB-BAK is the strongest U-channel post available. New billet steel has 25% more yield strength (80 – 100 KSI) than the rail steel used by our competitors. RIB-BAK withstands higher wind loads at crucial load bearing points, thus supporting heavier signs per post.System features include:
- Crashworthy to NCHRP 350 criteria.
- U.S. new billet steel.
- 80,000-Lb. minimum yield.
- Available in seven sizes.
- Powder coated or galvanized (bare available).
- Fast easy installation with conventional tools.
- Flush contact points for solid sign attachment.
Comparing Signposts
| RIB-BAK U-Channel | Other U-Channels | |
| Ingredients | U.S. New-billet Steel | Foreign Rail Steel |
| Steel Properties | Consistent and Strong | Inconsistent and Weak – 25% Less Tensile Strength |
| Supports Signage on Back of Post | Yes | No – Signs Wobble on a Rounded Surface |
| Yield Strength | 80 – 100 KSI | 60 -80 KSI |
| ASTM Requirements | Exceeds Requirements | Meets Requirements |
| Post Needed to Support 30” Stop Sign in 70 m.p.h. winds, 7’ Clear Height | 2.5 lb. Signpost | 3 lb. Signpost |
Multiple Sizes
Increased Benefits Of Powder Coating Are Worth More Than Paint
Only Nucor gives you the superior rust-resistant protection, durability and appearance of powder coating at the price of paint. Called Powder-Shell™, it’s available for all sizes of RIB-BAK in green, black, yellow, white, orange and brown (other colors by request). For the ultimate protection against the elements, RIB-BAK posts are also available in hot-dipped galvanized (ASTM A-123).
Only Nucor gives you the superior rust-resistant protection, durability and appearance of powder coating at the price of paint. Called Powder-Shell™, it’s available for all sizes of RIB-BAK in green, black, yellow, white, orange and brown (other colors by request). For the ultimate protection against the elements, RIB-BAK posts are also available in hot-dipped galvanized (ASTM A-123).
Powder Shell
|
Description
Smooth Glossy Polyester Powder Coat |
|
Gloss
ASTM D523 75-85% |
|
Pencil Hardness
ASTM D3363 H-2H |
|
Flexibility
ASTM D522 1/8th Inch |
|
Adhesion
ASTM D3359 5B |
|
Direct Impact
ASTM D2794 160 in./lbs. @ 2.0 mils |
|
Reverse Impact
ASTM D2794 160 in./lbs. @ 2.0 mils |
Crash Tested and Approved
RIB-BAK U-channel signposts and breakaway systems are accepted by the FHWA (Federal Highway Administration) for small sign support applications, and also meet the NCHRP 350 criteria for occupant impact velocity.
(NOTE: 3 lbs. /ft x 3 supports – and all 4 lbs./ft supports – must use breakaway hardware to comply with FHWA breakaway requirements.)
