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Session 6 KY Type 4A End Treatment See “Shop Drawings” for Types FLEAT-SP Slide 6 by Road Systems SRT-27 Slide 47 by Trinity
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Standard Drawing RBR-035 Guardrail End Treatment Type 4A MUST use App. Shop Drawings
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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
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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
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Approved Shop Drawings Type 4A Click for Alternate 1 or 2
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Approved Shop Drawing Type 4A Alternate - FLEAT-SP
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Type 4A End Treatment FLEAT-SP (Std Post) Installation http://roadsystems.com/fleat.html http://roadsystems.com/fleat.html
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FLEAT & SKT-SP Road Systems http://roadsystems.com/pdf/fleat /SP-Installation-Manual.pdf 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 SKT-SP and FLEAT-SP Installation together with the Type 4A Discussion
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FLEAT FLared Energy Absorbing Terminal Absorbs Energy by Kinking & Extruding the Rail Thru Impact Head
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The FLEAT Extrudes the Rail Toward Traffic in a Tight Roll Thru Impact Head and Feeded Chute
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Type 4A FLEAT-SP http://roadsystems.com/fleat.htmlhttp://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
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FLEAT Variable Offset KY = 48” 2’-6”4’-0” Road Systems, Inc.
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Type 4A FLEAT-SP http://roadsystems.com/fleat.html http://roadsystems.com/fleat.html FLEAT-SP Guardrail has SLOTS Toward The Impact Head Cable Anchor Bracket has Special Bolts with Widened Shoulders
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4A FLEAT 4 Foot Offset
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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) 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
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Install Post 3-6 Requires Standard Post at 6’3” Post Spacing
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Energy Absorbing End Treatmentts STRAIGHT FLARE / NOT CURVED NO CURVES
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Post 1 and 2 are Hinged to Facilitate Bending of the Post Upon Impact Post 1 has a Soil Plate - Downstream
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Post 1 and 2 are Hinged to Facilitate Bending of the Post Upon Impact Post 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
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Post 1 and 2 are Hinged Post 1 has a Soil Plate - Downstream
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IMPORTANT SKT-SP and FLEAT-SP Assure the 5/8” or 3/4” Hinge Bolts are at the Proper Locations
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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)
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Post 2 is Hinged so it will bend over upon impact, slot allows the post to release from the guardrail bolt Traffic
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Post 2 -Assure the Guardrail Connection Bolt Slot is Facing Post #1 – Guardrail Connection Bolt slides out upon Impact
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Post 2 is Installed Incorrectly!! Top and Bottom are Installed Backward – Post Cannot Hinge properly – GR Bolt Cannot Release Properly Traffic
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Post 3-6 require Standard Post With 8” Offset Blocks Post 1 & 2 no Offset Blocks Therefore Post 1&2 do not line up with other Post
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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 (FLEAT)
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“FLEAT” NO Guardrail Bolt Connection to Post 3 - Incorrect Installation Post 3 FLEAT Do NOT Connect the Guardrail to Post 3 just Connect the Block Out
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FLEAT – Guardrail Correctly NOT Bolted to Post 3 – just Connect Block Out to Post 3
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Guardrail Post 1-3 has 10 slots to Facilitate Bending the Rail as it Extrudes thru the Impact Head and 8 Bolt Holes
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Cable Anchor Bracket – Install Shoulder Bolts Washers, Nuts and Bracket Bolts Heads on Inside of Rail NOT Outside Note: 2 washers on each bolt
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Cable Anchor Bracket – Designed to Release During an Impact Bracket Bolted to Rail (8 places ) Road Systems, Inc. Bracket rest on Shoulders of Bolts
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Finger tighten Bolts & Washers – align slots on bracket with shoulder of bolts - tap into place with a hammer then tighten bolts
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Note how the Cable Anchor Bracket rest Snugly on the Shoulders of the Special Bolts
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Assure Anchor Bracket is fully seated on Shoulder Portion of the Cable Anchor Bolts - Openings on Cable Anchor Bracket toward Post 1 Bolts Installed Incorrectly – Nuts on Inside Bolt head placed on Front Side of Rail without Washer Bolts installed backwards with nuts on inside
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SKT & FLEAT - Post 1 is Hinged Arm on Impact Head Helps Bend Post
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The Guardrail is NOT attached to Post 1. The Impact Head is.
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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
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Improper Installation - Extruder Head not Pushed all the way on
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SKT-SP Cable feed inside/thru the Feeder Chute FLEAT-SP cable does NOT
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8”x8” Bearing Plate oriented Properly with Washer (5” up) - need restraining tie to keep Bearing Plate from Twisting
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Orientation of Bearing Plate Which Bearing Plate is almost Correct? Road Systems recommends a Restraining Tie
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Tighten Anchor Cable – Using Vice Grips
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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
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FLEAT-SP Checklist Continued 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
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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 http://roadsystems.com/pdf/fleat/SP- Installation-Manual.pdf
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Type 4A Alternate SRT-27 Need Photos
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Type 4A – SRT-27 Trinity Highway products http://www.highwayguardrail.com/products/cb.html http://www.highwayguardrail.com/products/cb.html
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One of the first Field Installations of the SRT-27
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Type 4A Installation Manual For the SRT-27 this is on line at: http://www.highwayguardrail.com/products/et- srt350.html which has a link to the SRT-27 Installation Instructions & Shop Drawings in the right hand column near the bottom http://www.highwayguardrail.com/products/et- srt350.html http://www.highwayguardrail.com/products/pdf s/SRT-27%20%20SRT- 31%20Flip%20Manual.pdf http://www.highwayguardrail.com/products/pdf s/SRT-27%20%20SRT- 31%20Flip%20Manual.pdf Shop Drawing on KYTC Design Web Page
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SRT-27 Installation Instructions
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SRT-27 Slotted Rail Terminal – 27 Inch Need PHOTOS OF Crashed SRT-27
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Shop Drawing SRT-27
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SRT-27 Title Block and Parts List SRT-27 ERECTION DETAILS( 3 PANELS and CR and SYT POST)
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SRT-27: Slotted Rail Terminal – 27 Inch http://www.highwayguardrail.com/products /et-srt350.html http://www.highwayguardrail.com/products /et-srt350.html Gating Flared End Terminal Straight Flare Pay Limits 37’ 6” The SRT-27 is not an Energy Absorbing End Treatment
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Slide of schematic from installations instructions SRT-27
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Type 4A – SRT-27 Post 1 – CR (Controlled Release)Post Strut Between Post 1&2 Post 2-6 SYTP Post (Steel Yielding Terminal Post) Post 3-6 have 8” Offset Blocks Guardrail is not connected at Post 2, 3, 4 or 5 Standard Guardrail begins @ Post 7 37’ 6” long on a straight flare
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SRT-27 Post Installation Begin @ Post 9 to establish the Guardrail Tangent Line @ T7 – extend to T1 Measure from T1 an offset of 4’0” perpendicular to roadway – Estb. backside of guardrail for Post 1 Measure offsets of Post 7-8 Estb. Straight line between Point 1 & Point 7 (represents back side of rail)
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SRT-27 Post Installation Begin @ Post 9 to establish the Guardrail Tangent Line @ T7 – extend to T1
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SRT-27 Post Installation Continued Establish Points 2-6 @ 6’3” intervals Installing the SYT (Steel Yielding Terminal) Post 2-6 The Center of the Yielding Holes in the Post is Approx. @ Finished Grade
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Center of the Yielding Holes in the Post is Approx. @ Finished Grade
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SRT - 27 Post 1 CR (Controlled Release) Post Installation CR Bottom Post Installation Orient lower portion of CR Post so the ¾” Strut Attachment Hole is closer to the nose of the system Place where the Strut Hole is Approx. @ Finished Grade See Manufactures Instructions if Rock is Encountered
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Orient lower portion of CR Post so the ¾” Strut Attachment Hole is closer to the nose of the system
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SRT-27 Post 1 CR Post Installation CR Top Post Installation Align the ears of the top and bottom Insert a 5/16” x 1 ¾” Hex head Bolt in each of the 3/8” holes in bottom and top post plates – use a 5/16” washer under the hex nut Tighten the nut (no torque requirements)
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CR Top Portion Installation Align the ears of the top and bottom Front View Back View Slight Angle
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Insert a 5/16” x 1 ¾” Hex head Bolt in each of the 3/8” holes in bottom and top post plates – use a 5/16” washer under the hex nut 5/16” Hex Bolt Washer & Nut each side
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Insert a 5/16” x 1 ¾” Hex head Bolt in each of the 3/8” holes in bottom and top post plates – use a 5/16” washer under the hex nut 5/16” Hex Bolt Washer & Nut each side
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SRT-27 – Installing the Strut between Post 1 & 2 Part of the Angle Strut is below grade – installer must provide a shallow valley Place the Angle Strut outside the Post Ear of Post 1 and backside of the SYT Post @ Post 2 Place a 5/8” x 1 ¾” High Strength Hex Bolt thru ¾” hole in Post Plate and thru Slot in Strut @ Post 1 – place 5/8” Washer Under Bolt Head and Hex Nut
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SRT-27 – Installing the Strut at Post 1 Strut in Shallow Valley
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Place a 5/8” x 1 ¾” High Strength Hex Bolt thru ¾” hole in Post Plate and thru Slot in Strut @ Post 1 – place 5/8” Washer Under Bolt Head and Hex Nut Washers are Important Incorrect Loose Fit Without Washer Correct Tight Fit With Washer
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SRT-27 – Installing the Strut Post 2 Post 2 Insert 7/16” x 1 ¾” High Strength Hex Bolt with 7/16” washer thru each of the ½”ground holes of the SYT Post and thru the slots of the Strut – place 7/16 Lock Washer and Nut on end of bolt Tighten all Bolts – no Torque Requirements
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SRT-27 – Installing the Strut Post 2 Washers are Important Incorrect Loose Fit Without Washer Correct Tight Fit With Washer
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SRT-27 Installing Rail Panels The Guardrail from Post 7 to Post 5 does NOT have Slots Layout the Guardrail so Slot Guard Attachment Holes @ the ends of the Slots (away from Post 1) Position Guardrail with Long Slots between Post 1&2 Post 2&3 Position Guardrail with Short Slots between Post 3&4 and Post 4&5 Splice and Post Bolt the 12’ 6”rail panel at Post 7 to the run of rail
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SRT-27 Installing Rail Panels Continued Short Slots Long Slots No Slots Slot Guards Away From Post 1 Connect to Standard Rail @ Post 7
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Long Slots Between Post 2 & 3 and 1 & 2 Long Slots Between Post 2 & 3 Long Slots Between Post 1 & 2
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Short Slots Between Post 4 & 5 and 3 & 4 Short Slots Between Post 4 & 5 Short Slots Between Post 3 & 4
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No Slots Between Post 6 & 7 and 5 & 6 No Slots Between Post 6 & 7 No Slots Between Post 5 & 6
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SRT-27 Installing Rail Panels Continued Insert and tighten 5/8”x10” Post Bolt thru 8” Offset Blocks and attach 5/8” Hex Head HGR Nut at Post 5, 4, and 3 (rail Panels are NOT attached to Post 2, 3, 4, & 5) Post 2 Insert and tighten 5/8”x2” HGR Post Bolts thru 2 holes in Flange Protector (6” Backup Plate) and the Post Shelf Angle with a 5/8’ HGR Hex Nuts
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No BOLT to Rail Connection @ Post 2, 3, 4, & 5 Post 2Post 3
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No BOLT to Rail Connection @ Post 2, 3, 4, & 5 Post 4Post 5
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Rail is Bolted @ Post 6 Post 6
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Flange Protector & Shelf Angle Post 2 two 5/8” HGR Bolts & Nuts
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Flange Protector & Shelf Angle Post 2
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SRT-27 Installing Rail Panels Continued Splice the Rail Panel to the second Rail Panel at Post 5 with Splice Bolts and Nuts Insert 5/8”x10” HGR Post Bolt thru the Rail Panel and Offset Block at Post 6 and secure with Hex Nut and Tighten Splice the Rail Panel to the first Rail Panel at Post 3 with Splice Bolts and Nuts
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Rail Panel does get Bolted to Post @ Post 6 Post 6
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SRT-27 Installing Rail Panels Continued Insert 5/8”x2” HGR Post Bolt thru the Rail Panel at Post 1 and secure with Hex Nut and Tighten Your Rail Panels are now attached
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SRT-27 Installing Slot Guards on Downstream End of Slots Place 4 Slot Guards against backside of the Guardrail Panels with Deflector Angle Gap Opening toward the Elongated Slots and connect with six 5/8”x1 1/4” Splice Bolts and Nuts – bolts inserted from front of rail Traffic
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SRT-27 Installing Slot Guards TRAFFIC
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2 nd Rail Panel Installed Backwards Thus Slot Guards on Incorrect End of Slots Traffic
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SRT-27 Installing Cable Anchor Assembly Place 5/8” Washer on each of the eight 5/8” Hex Head Bolts Insert the Bolts thru the Traffic Side of the Rail Panel and the Cable Anchor Bracket (on the backside of the Rail Panel) & Secure with Hex HGR Nuts
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Front and Back of Cable Anchor Assembly Bolts & Washers (front) and Nuts (Back) Back of Rail Traffic Front of Rail Traffic
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SRT-27 Installing Cable Anchor Assembly Continued Slide one end of Cable into Cable Anchor Bracket Place 1” washer and Hex Nut on End of the Cable extending thru the Cable Anchor Bracket
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SRT-27 Installing Cable Anchor Assembly @ Post 1 Slide the other end of Cable thru the Hole Between the Top and Bottom CR Post 1 At Post 1 Place the Cable Anchor Bracket on the Cable Place the Short Bent Leg of the Cable Anchor Bracket over the Top Edge of the Post Plate Secure with a 1” Washer and Hex Nut
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SRT-27 Installing Cable Anchor Assembly @ Post 1
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View of Cable Anchor Assembly in Front of Post 1
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View of Cable Anchor Assembly from Top Post 1
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View of Cable Anchor Assembly From Behind Post 1
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SRT-27 Installing Cable Anchor Assembly Continued Restrain the cable with a Vice Grip at the End being Tightened to avoid Twisting the Cable Tighten until Taught Cable Anchor Assembly is now complets
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SRT-27 Installing End Section Connect the End Section to the End of the Guardrail with four 5/8”x1 ¼” HGR Splice Bolts and Hex HGR Nuts Install High Intensity Reflective Sheeting
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SRT-27 Installing End Section
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SRT-27 Installation Checklist Rail Height 27 ¾” Minimum Site grading such that Ears on bottom of CR Post 1 do not exceed 4” above ground Anchor Cable Taught Guardrail is NOT attached @ Post 2, 3, 4 & 5 Slot Guards in place and Deflector Angle Gap Opening oriented toward Elongated Slots
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SRT-27 Installation Checklist Continued Guardrail panels Oriented correctly and Lapped in direction of Traffic Backfill around Post if necessary and properly compacted SYT Post 2-6 Center of Yielding Holes are approx. at the Finished Grade
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Completed Trinity SRT-27 Assembly @ Roadway Products – Mid-Park Clarkson KY
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SRT-27 and FLEAT-SP Installation manuals SRT-27SKT-SP & FLEAT-SP
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Manufactures Installation Info FLEAT-SP Road Systems http://roadsystems.com/fleat.html http://roadsystems.com/pdf/fleat/SP- Installation-Manual.pdf http://roadsystems.com/fleat.html http://roadsystems.com/pdf/fleat/SP- Installation-Manual.pdf SRT-27 Trinity Highway Products http://www.highwayguardrail.com/products/et- srt350.html which has a link to the SRT-27 Installation Instructions lower right column http://www.highwayguardrail.com/products/et- srt350.html Note: SRT-27 Shop Drawing only available on KYTC Design web page - Standard Drawings
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1. Q & A Time Post 2 FLEAT OK?? Post 2 Installed Backwards Cannot hinge or release from rail
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2. Q & A Time What is Incorrect here?? Bearing Plate Rotated 5” to be up Cable extremely loose
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3. Q & A Time FLEAT-SP Third Post Guardrail @ Post 3 of FLEAT Is NOT Attached Offset Block is Attached
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4. Q & A Time FLEAT-SP Cable Anchor Bracket Front of Rail Back of Rail Bolts Installed Backwards
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5. Q & A Time Post 1 FLEAT-SP Anything Missing?? Washers Missing Under Nut & Bolt Head on Top Bolts
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6. Q & A Time SKT-27 The SKT-27 - is Unique because the Guardrail is NOT attached @ Post??? Guardrail is NOT attached @ Post 2, 3, 4 & 5
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