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U-Channel Breakaway Systems Delineators Square Tube Accessories


FHWA Letters              Back


Letter No.

Date

Company

Description

Letter PDF

Link to FHWA

SS-05

6/15/1987

 

a. Perforated square steel tube - 2 x 2 in. x 0.105 wall thick. max size.**
b. Single 3 lb/ft steel U-post. **
c. Dual 3 lb/ft steel U-post. **
d. Ariz. dual legged slip base S4x7.7 post
e. Texas dual leg slip base, W12x45 post
f. to g. repeated SS-1 to SS-4 above 

View PDF acceptance letter on a. Perforated square steel tube - 2 x 2 in. x 0.105 wall  thick. max size.**             b. Single 3 lb/ft steel U-post. **    c. Dual 3 lb/ft steel U-post. **    d. Ariz. dual legged slip base S4x7.7 post    e. Texas dual leg slip base, W12x45 post    f. to g. repeated SS-1 to SS-4 above (PDF, 2,465 Kb).(2,465 Kb)

SS-05A

7/18/1996

Marion Steel Company 

Redesigned RIB-BAK  

View PDF acceptance letter on Redesigned Rib-Bak (PDF, 80 Kb).(80 Kb)

SS-18A

7/18/1996

Marion Steel Company 

Redesigned RIB-BAK

View PDF acceptance letter on Redesigned Rib-Bak (PDF, 80 Kb).(80 Kb)

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