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Guide Rail Inspection & Inventory Reference
Manual
April 2011
Compiled by Robert Gorka
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Rail Items:
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3 Strand Cable Barrier
W-Beam Barrier
Box Beam Barrier
Normal Height: 27 in Max. Height: 30 in Min. Height: 24 in Post Spacing*: 16 ft Deflection Dist.: 11 ft
Normal Height: 27 in Max. Height: 30 in Min. Height: 24 in Post Spacing*: 6 ft Deflection Dist.: 5 ft
Normal Height: 32 in Max. Height: 35 in Min. Height: 29 in Post Spacing*: 12.5 ft Deflection Dist.: 8 ft
Normal Height: 27 in Max. Height: 30 in Min. Height: 24 in Post Spacing*: 6.25 ft Deflection Dist.: 4 ft
Heavy Post
Weak Post
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Box Beam Median Barrier
Concrete NJ Shape & Single Slope Barrier
W-Beam Median Barrier
Rail Items:
Normal Height: 33 in Max. Height: 36 in Min. Height: 30 in Post Spacing*: 12.5 ft Deflection Dist.: 7 ft
Normal Height: 27 in Max. Height: 30 in Min. Height: 24 in Post Spacing*: 6.25 ft Deflection Dist.: 3 ft
Heavy Post
Weak Post
Normal Height: 30 in Max. Height: 33 in Min. Height: 27 in Post Spacing*: 6 ft Deflection Dist.: 3 ft
* See page 25 for other post spacing/deflection distance combinations
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Rail Items:
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Timber Barrier
Steel-Backed Timber Barrier
Thrie Beam Barrier
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Rail Items:
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Shop Curve
Painted Box Beam Barrier
Rustic Box Beam Barrier
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Weak Post
Heavy Post With Steel Block Out
Heavy Post
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Post Items:
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“S” Post
“C” Post
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Post Items: Heavy Post With Wood & Synthetic Block Out
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Concrete Post
Wood Post
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Post Items:
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End Treatments:
W-Beam Driveway Turndown
W-Beam Classic Turndown
W-Beam Spade
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End Treatments:
SKT-350
W-Beam Boxing Glove
ET-2000
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End Treatments: Box Beam Type 0
Box Beam End Piece (Known as Box Beam Type I Prior to 7/2/10 )
Box Beam Type II (Disapproved 7/2/10)
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End Treatments: Box Beam Type I End Assembly
Box Beam Type IIA End Assembly
Box Beam Modified Type I End Assembly
Includes 72’ shop curve and box beam end piece
Includes 18’ shop curve and box beam end piece
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Box Beam Type III: WYBET
Box Beam Type III: BEAT
End Treatments:
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End Treatments: Median Box Beam Type A
Median Box Beam Type C
Median Box Beam Type B
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End Treatments:
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Attenuator Device: React 350
Attenuator Device: Sand Barrels
Attenuator Device: Quadguard
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End Treatments: Box Beam Pier Protection
Transition From Box Beam to Bridge Rail
Transition Box Beam to Concrete Barrier
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Transition From Box Beam to W-Beam
End Treatments:
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Transition From Box Beam to Cable
Cable Anchor Block
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External Box Beam Coupling
Issues:
Box Beam Heat Number & Makers Mark
2 Bolt Connection — Box Beam Installed Before 1975
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Issues: Damaged Type III WYBET & BEAT End Assembly
No Flair to End Terminals
Wood Posts at Driveway Openings
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Issues:
Weak Post Welded to Box Beam
Exposed Soil Plates
More Than 3 Bent Adjacent Posts
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Holes or Rust Damage
Issues:
Excessive Rips or Tears
Welded W-Beam
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Fixed Objects in the Deflection Distance
Cables Protecting Deep Water
Inadequate Tension in Cable Barrier
Issues:
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Issues: Rail Splices Lapped Against the Flow of Traffic
Short Runs of Unnecessary Barrier
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See page 26 for instruction on how to measure rail height when there is a drop off at the edge of shoulder.
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Page 25
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How to Measure Rail Height: (With Drop Off @ Edge of Shoulder)
3 Strand Cable Barrier
Box Beam Barrier
W-Beam Barrier
Note: In all cases where there is no drop off measure height from the surface directly below the barrier. Measure from the pavement surface if curb is present within 12 inches of the railing.
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Notes: