session 6 ky type 4a end treatment see “shop drawings” for types fleat-sp slide 6 by road...
TRANSCRIPT
Session 6KY Type 4A End Treatment
See “Shop Drawings” for TypesFLEAT-SP Slide 6 by Road
SystemsSRT-27 Slide 47 by Trinity
Standard Drawing RBR-035 Guardrail End Treatment Type
4A MUST use App. Shop
Drawings
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 SKT-SP and FLEAT-SPInstallation 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
4A FLEAT 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)
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 (FLEAT)
“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
FLEAT – Guardrail Correctly NOT Bolted to
Post 3 – just Connect Block Out 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
TightenAnchorCable – Using
Vice Grips
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
Need Photos
Type 4A – SRT-27 Trinity Highway products
http://www.highwayguardrail.com/products/cb.html
One of the first Field Installations of the SRT-27
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
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
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 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)
CR Top Portion InstallationAlign 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
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
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
complets
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