Session 6KY Type 4A End Treatment

See “Shop Drawings” for TypesFLEAT-SP Slide 6 by Road

SystemsSRT-27 Slide 49 by Trinity

Standard Drawing RBR-035 Guardrail End Treatment Type

4A MUST use App. Shop

Drawings

RBR-035 -KYTC Pay Limits for the

Type 4A is 37'-6” even though the FLEAT Shop Drawing says

12’ 6”?

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

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

Approved Shop Drawings Type 4A

Click for Alternate 1 or 2

Approved Shop DrawingType 4A Alternate - FLEAT-

SP

Type 4A End TreatmentFLEAT-SP (Std Post) Installation

http://roadsystems.com/fleat.html

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

FLEAT FLared Energy Absorbing Terminal

Absorbs Energy by Kinking & Extruding the Rail Thru Impact

Head

The FLEAT Extrudes the Rail Toward Traffic in a Tight Roll

Thru Impact Head and Feeded Chute

Type 4A FLEAT-SP

http://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

FLEAT Variable Offset KY = 48”

2’-6” 4’-0”

Road Systems, Inc.

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

Type 4A FLEAT-SP 4 Foot Offset

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

Install Post 3-6 Requires Standard Post

at 6’3” Post Spacing

Energy Absorbing End TreatmenttsSTRAIGHT FLARE / NOT CURVED

NO C

URVES

Post 1 and 2 are Hinged to Facilitate Bending of the Post

Upon ImpactPost 1 has a Soil Plate -

Downstream

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

Post 1 and 2 are HingedPost 1 has a Soil Plate -

Downstream

IMPORTANT SKT-SP and FLEAT-SPAssure the 5/8” or 3/4” Hinge Bolts

are at the Proper Locations

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)

Post 2 is Hinged so it will bend over upon impact, slot allows the post to release from the

guardrail bolt

Traffic

Post 2 -Assure the Guardrail Connection Bolt Slot is Facing Post

#1 – Guardrail Connection Bolt slides out upon Impact

Post 2 is Installed Incorrectly!! Top and Bottom are Installed Backward – Post

Cannot Hinge properly – GR Bolt Cannot Release Properly

Traffic

Post 3-6 require Standard Post With 8” Offset Blocks

Post 1 & 2 no Offset BlocksTherefore Post 1&2 do not line

up with other Post

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)

Type 1 “SKT-SP” Guardrail Bolt is Connection to Post 3 - Correct Installation

Post 3

SKT-SP Connect the Guardrail

to Post 3 as shown

Type 4A “FLEAT-SP”NO Guardrail Bolt Connection

to Post 3 - Incorrect Installation

Post 3

FLEAT-SPDo NOT Connect the Guardrail

to Post 3 just Connect the Block Out

FLEAT-SP – Guardrail Correctly “NOT” Bolted to

Post 3 – just Connect Offset Block to Post 3

Guardrail Post 1-3 has 10 slots to Facilitate Bending the Rail as it

Extrudes thru the Impact Head and 8 Bolt Holes

Cable Anchor Bracket – Install Shoulder Bolts Washers, Nuts and

Bracket Bolts Heads on Inside of Rail NOT

Outside

Note: 2 washers on each bolt

Cable Anchor Bracket – Designed to Release During an Impact

Bracket

Bolted to Rail(8 places)

Road Systems, Inc.

Bracket rest on Shoulders of Bolts

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

tighten bolts

Note how the Cable Anchor Bracket rest Snugly on the

Shoulders of the Special Bolts

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

Railwithout Washer

Bolts installed backwards with nuts on inside

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

Post

The Guardrailis NOT attached

to Post 1.The Impact Head is.

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

Improper Installation - Extruder Head not Pushed all the way on

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

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

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

Tie

Tighten AnchorCable – Using Vice Grips, on Shank not on the Cable, to

prevent twisting of the Cable

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

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

Road Systems Assembly Instructions for

SKT-SP and FLEAT-SP This is a very useful and well done

document http://roadsystems.com/pdf/fleat/S

P-Installation-Manual.pdf

Type 4A AlternateSRT-27

Type 4A – SRT-27 Trinity Highway products

http://www.highwayguardrail.com/products/cb.html

One of the first KY Field Installations of the SRT-27

Length of Need???

Type 4AInstallation Manual

For the SRT-27 this is on line at: http://www.highwayguardrail.com/produc

ts/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/pdfs/SRT-27%20%20SRT-31%20Flip%20Manual.pdf

Shop Drawing on KYTC Design Web Page

SRT-27 Installation Instructions

SRT-27Slotted Rail Terminal – 27

Inch

Need PHOTOS OF Crashed SRT-27

Shop Drawing SRT-27

SRT-27Title Block and Parts List

SRT-27 ERECTION DETAILS( 3 PANELS and

CR and SYT POST)

SRT-27: Slotted Rail Terminal – 27 Inchhttp://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

Slide of schematic from installations instructions

SRT-27

IInstallation Procedures for

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

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)

SRT-27 Post InstallationBegin @ Post 9 to establish the Guardrail

Tangent Line @ T7 – extend to T1

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 Careful – do not mix SYT and SP

(Standard Post) in the Type 4A Guardrail End Treatment – except for 4 holes @ ground line – very similar

Drive SYT Post at Post 2-6. Careful SYT Post and SP (Std

Post) look very similar – DO NOT INTERMIX

SYT Post have4 holes nearGround Line

DO NOT INTERMIX

SYT Post and SP Post

Center of the Yielding Holes in the Post is Approx. @

Finished Grade

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

Orient lower portion of CR Post so the ¾” Strut Attachment Hole is closer to the nose of the system

SRT-27 Post 1 CR Post Installation

CR Top Post Installation Align the ears of the top and bottom –

top plate goes in front of the bottom (shop drawing)

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)

Post 1 CR Top Portion Installation

Align the ears of the top and bottom

Front View Back View

Slight Angle

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

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

Post 1 Incorrect Align the ears of the top and bottom – top plate goes in front of

the bottom (shop drawing). Cable Anchor Bracket flush

Bottom Post 1 driven backwards. Bottom Post 1 only has 1 hole and it is to be toward front.

Cable Anchor Bracket NOT Flush & Gap Between Top Bottom Ears & does not Align properly.

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

SRT-27 – Installing the Strut at Post 1

Strut in Shallow Valley

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 NutWashers are

ImportantIncorrect

Loose Fit Without WasherCorrect

Tight Fit With Washer

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

SRT-27 – Installing the StrutPost 2

Washers are Important

IncorrectLoose Fit Without Washer

CorrectTight Fit With Washer

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

SRT-27 Installing Rail Panels

ContinuedShort Slots Long SlotsNo Slots

Slot Guards Away From Post 1Connect to

Standard Rail @ Post 7

Long Slots Between Post 2 & 3 and 1 & 2

Long Slots BetweenPost 2 & 3

Long Slots BetweenPost 1 & 2

Short Slots Between Post 4 & 5 and 3 & 4

Short Slots BetweenPost 4 & 5

Short Slots BetweenPost 3 & 4

No Slots Between Post 6 & 7 and 5 & 6

No Slots BetweenPost 6 & 7

No Slots BetweenPost 5 & 6

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

No BOLT to Rail Connection

@ Post 2, 3, 4, & 5

Post 2 Post 3

No BOLT to Rail Connection

@ Post 2, 3, 4, & 5

Post 4 Post 5

Rail is Bolted @ Post 6

Post 6

Flange Protector & Shelf Angle Post 2 two 5/8” HGR Bolts &

Nuts

Flange Protector & Shelf Angle Post 2

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

Rail Panel does get Bolted to Post @ Post

6

Post 6

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 – Trinity has informed me that the bolt at Post 1 should be placed on the downstream side of the post (toward Post 2) – this is in response to reports of loose cables.

Your Rail Panels are now attached

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

SRT-27 Installing Slot Guards

TRAFFIC

2nd Rail Panel Installed Backwards

Thus Slot Guards on Incorrect End of Slots

Traffic

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

Front and Back of Cable Anchor Assembly Bolts & Washers (front) and Nuts

(Back)Back of Rail

TrafficFront of Rail

Traffic

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

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

SRT-27 Installing Cable Anchor Assembly @ Post 1

View of Cable Anchor Assembly in Front of Post

1

View of Cable Anchor Assembly from Top Post 1

View of Cable Anchor Assembly From Behind

Post 1

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

complete

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

SRT-27 Installing End Section

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

SRT-27 Installation ChecklistContinued

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

Completed Trinity SRT-27 Assembly

@ Roadway Products – Mid-ParkClarkson KY

SRT-27 and FLEAT-SP Installation manuals

SRT-27 SKT-SP & FLEAT-SP

Manufactures Installation Info

FLEAT-SP Road Systems 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

Note: SRT-27 Shop Drawing only available on KYTC Design web page - Standard Drawings

1. Q & A TimePost 2 FLEAT OK??

Post 2 Installed Backwards

Cannot hingeor releasefrom rail

2. Q & A TimeWhat is Incorrect here??

Bearing Plate Rotated5” to be up

Cable extremely loose

3. Q & A Time FLEAT-SP Third Post

Guardrail @Post 3 of FLEATIs NOT Attached

Offset Block is Attached

4. Q & A TimeFLEAT-SP Cable Anchor Bracket

Frontof Rail

Back of Rail

Bolts Installed Backwards

5. Q & A TimePost 1 FLEAT-SP

Anything Missing??

Washers Missing Under Nut & Bolt Head on Top Bolts

6. Q & A TimeSKT-27

The SKT-27 - is Unique because the Guardrail is NOT attached @ Post???

Guardrail is NOT attached @ Post 2, 3, 4 & 5