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Standard Drawing RBR-035 Guardrail End Treatment Type 4A MUST use App. Shop Drawings

Session 6 KY Type 4A End Treatment See “Shop Drawings” for Types FLEAT-SP Slide 6 by Road Systems SRT-27 Slide 49 by Trinity. Standard Drawing RBR-035 Guardrail End Treatment Type 4A MUST use App. Shop Drawings.

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Standard Drawing RBR-035 Guardrail End Treatment Type 4A MUST use App. Shop Drawings

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  1. Session 6KY Type 4A End TreatmentSee “Shop Drawings” for TypesFLEAT-SP Slide 6 by Road SystemsSRT-27 Slide 49 by Trinity

  2. Standard Drawing RBR-035 Guardrail End Treatment Type 4A MUST use App. Shop Drawings

  3. RBR-035 -KYTC Pay Limits for the Type 4A is 37'-6” even though the FLEAT Shop Drawing says 12’ 6”?

  4. Installation Instructions for Proprietary Guard Rail End Terminals • This Std Draw Note appears on each Proprietary End Treatment used in KY - “The Manufacturer SHALL furnish two (2) sets of shop plans to the contractor with each installation” • Each Proprietary End Treatment “see shop drawings” • Added to Sect 719.03 of 2012 Std Specs: “Proprietary end treatments SHALL be installed according to the manufacturer’s assembly or installation instructions” • SHOULD NOT LET THE CONTRACTOR BEGIN INSTALLATION BEFORE SUPPLYING YOU WITH THESE SHOP PLANS & INSTALLATION INSTRUCTIONS – Both you and the contractor need these documents to properly do your jobs of installing and inspection propriety guardrail end terminals

  5. How do you know which version of a Proprietary Guardrail End Treatment KY is Using? • Go to the KYTC Div of Design Home Page http://transportation.ky.gov/Highway-Design • On the right click on Standard Drawings • Brings up: • Standard Drawings • Active Sepia List • Approved Shop Drawings - Click • The drawings show the version 350, SP, 27 etc. • Good general information on the Shop Drawing

  6. Approved Shop Drawings Type 4AClick for Alternate 1 or 2

  7. Approved Shop DrawingType 4A Alternate - FLEAT-SP

  8. Type 4A End TreatmentFLEAT-SP (Std Post) Installationhttp://roadsystems.com/fleat.html

  9. FLEAT & SKT-SP Road Systems http://roadsystems.com/pdf/fleat/SP-Installation-Manual.pdf SKT-SP & FLEAT-SP A very easy to follow “Assembly Instructions” With Drawings and Photos As I noted in the Type 1 Discussion we will cover both the Type 1 SKT-SP and the Type 4A FLEAT-SP Installation together with the Type 4A Discussion

  10. FLEAT FLared Energy Absorbing TerminalAbsorbs Energy by Kinking & Extruding the Rail Thru Impact Head

  11. The FLEAT Extrudes the Rail Toward Traffic in a Tight RollThru Impact Head and Feeded Chute

  12. Type 4A FLEAT-SPhttp://roadsystems.com/fleat.html • FLEAT-SP (FLared Energy Absorbing Terminal – Standard Post System) is an energy-absorbing flared terminal -NCHRP 350 APPROVED • Flare is straight and the offset is variable between 2'-6" and 4'-0” - KY only uses 4’ • No strut, but does have a soil plate at Post 1

  13. FLEAT Variable Offset KY = 48” 2’-6” 4’-0” Road Systems, Inc.

  14. Type 4A FLEAT-SP http://roadsystems.com/fleat.html • FLEAT-SP Guardrail has SLOTS Toward The Impact Head • Cable Anchor Bracket has Special Bolts with Widened Shoulders

  15. Type 4A FLEAT-SP 4 Foot Offset

  16. Installation Procedures for FLEAT-SP and SKT-SP • Install standard steel guardrail posts #3 - #6 (on a straight 48” flair Post 7 to Post 1 FLEAT) • Install breakaway steel end posts #1 and #2 • Install guardrail. All posts are spaced at 6'-3" • Install cable anchor bracket • Install the SKT-SP or FLEAT-SP impact head • Install cable assembly

  17. Install Post 3-6 Requires Standard Post at 6’3” Post Spacing

  18. NO CURVES Energy Absorbing End Treatmentts STRAIGHT FLARE / NOT CURVED

  19. Post 1 and 2 are Hinged to Facilitate Bending of the Post Upon ImpactPost 1 has a Soil Plate - Downstream

  20. Post 1 and 2 are Hinged to Facilitate Bending of the Post Upon ImpactPost 1& Post 2 are NOT the Same • Post 1 and 2 are NOT the same • Post 1 and 2 are both two part Post that Bend or Hinge on Impact • Install the bottom of the Post before connecting the Top portion of each Post

  21. Post 1 and 2 are HingedPost 1 has a Soil Plate - Downstream

  22. IMPORTANT SKT-SP and FLEAT-SPAssure the 5/8” or 3/4” Hinge Bolts are at the Proper Locations

  23. IMPORTANT SKT-SP and FLEAT-SPAssure the 5/8” or 3/4” Hinge Bolts are at the Proper Locations • Post 1 – 5/8” x 8 ½” bolt, nut & 2 washers are on UPSTREAM side of the post (toward Impact Head) • Post 2 - ¾” x 8 ½” bolt and nut (no washers) on DOWNSTREAM side of the post (away from Impact Head)

  24. Post 2 is Hinged so it will bend over upon impact, slot allows the post to release from the guardrail bolt Traffic

  25. Post 2 -Assure the Guardrail Connection Bolt Slot is Facing Post #1 – Guardrail Connection Bolt slides out upon Impact

  26. Post 2 is Installed Incorrectly!! Top and Bottom are Installed Backward – Post Cannot Hinge properly – GR Bolt Cannot Release Properly Traffic

  27. Post 3-6 require Standard Post With 8” Offset BlocksPost 1 & 2 no Offset Blocks Therefore Post 1&2 do not line up with other Post

  28. Install the rail from Post 6-3 with 8” Offset Blocks and Post 1-2 No Offset Blocks Do NOT Attach Guardrail to Post 1 or 3 (Type 4A FLEAT)

  29. Type 1 “SKT-SP” Guardrail Bolt is Connection to Post 3 - Correct Installation SKT-SP Connect the Guardrail to Post 3 as shown Post 3

  30. Type 4A “FLEAT-SP”NO Guardrail Bolt Connection to Post 3 - Incorrect Installation FLEAT-SP Do NOT Connect the Guardrail to Post 3 just Connect the Block Out Post 3

  31. FLEAT-SP – Guardrail Correctly “NOT” Bolted to Post 3 – just Connect Offset Block to Post 3

  32. Guardrail Post 1-3 has 10 slots to Facilitate Bending the Rail as it Extrudes thru the Impact Head and 8 Bolt Holes

  33. Cable Anchor Bracket – Install Shoulder Bolts Washers, Nuts and Bracket Bolts Heads on Inside of Rail NOT Outside Note: 2 washers on each bolt

  34. Cable Anchor Bracket – Designed to Release During an Impact Bracket Bolted to Rail (8 places) Bracket rest on Shoulders of Bolts Road Systems, Inc.

  35. Finger tighten Bolts & Washers – align slots on bracket with shoulder of bolts - tap into place with a hammer then tighten bolts

  36. Note how the Cable Anchor Bracket rest Snugly on the Shoulders of the Special Bolts

  37. Assure Anchor Bracket is fully seated on Shoulder Portion of the Cable Anchor Bolts - Openings on Cable Anchor Bracket toward Post 1Bolts Installed Incorrectly – Nuts on Inside Bolt head placed on Front Side of Rail without Washer Bolts installed backwards with nuts on inside

  38. SKT & FLEAT - Post 1 is HingedArm on Impact Head Helps Bend Post

  39. The Guardrail is NOT attached to Post 1. The Impact Head is.

  40. Impact Head Attachment @ Post 1, 5/16” Grade 5 bolts need 2 washers each (1 under nut & 1 under bolt head) and they need tightening

  41. Improper Installation - Extruder Head not Pushed all the way on

  42. SKT-SP Cable feed inside/thru the Feeder Chute FLEAT-SP cable does NOT

  43. 8”x8” Bearing Plate oriented Properly with Washer (5” up) - need restraining tie to keep Bearing Plate from Twisting

  44. Orientation of Bearing Plate Which Bearing Plate is almost Correct? Road Systems recommends a Restraining Tie

  45. Tighten Anchor Cable – Using Vice Grips, on Shank not on the Cable, to prevent twisting of the Cable

  46. FLEAT-SP Checklist • Rail height is 27 ¾” Minimum • No Curved Rail SKT-SP 50’ FLEAT-SP 37’ 6” • Guardrail is NOT attached at Post 1 & 3 • End Rail Panel has Special Slots • Hinge Bolt @ Post 2 is Downstream • Hinge Bolt @ Post 1 is Upstream • Bolt Slots in Post 2 Face Upstream

  47. FLEAT-SP ChecklistContinued • Stubs of Post 1&2 do not stick up 4” • Straight 4’ Flare • Bolts Holding Impact Head are Properly Installed and Secure (2 washers each) • 8”x8” bearing Plate Oriented with 5” up • Cable Anchor Brackets Properly Installed Such that Bracket is Fully Seated on the Bolt Shoulders • Cable Taught

  48. Road Systems Assembly Instructions for SKT-SP and FLEAT-SP • This is a very useful and well done document • http://roadsystems.com/pdf/fleat/SP-Installation-Manual.pdf

  49. Type 4A AlternateSRT-27

  50. Type 4A – SRT-27 Trinity Highway productshttp://www.highwayguardrail.com/products/cb.html

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