Session 8 Type IX Crash Cushion CAT-350 Trinity Highway Products
description
Transcript of Session 8 Type IX Crash Cushion CAT-350 Trinity Highway Products
Session 8Type IX Crash Cushion CAT-350
Trinity Highway Products
Installation Instructions for Proprietary Guard Rail End
Terminals Std Draw Note – RBE-200 & 205 Crash Cushion Type IX
both have notes “The Manufacture SHALL furnish two (2) sets of shop plans to the contractor with each installation”
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 OR INSTALLATION INSTRUCTIONS – With this training I have attempted to follow the manuals as closely as possible but you and the contractor need these documents to properly do your jobs of installing and inspection propriety guardrail end terminals
Type IX Crash Cushion CAT-350
Trinity Highway Products The CAT-350 is designed with a flimsy Nose,
Breakaway Wood Post and Slotted Rail Panels that telescope through a Rectangular Plate Washer and Special Bolt Assembly that shreds the Rail Panels apart burning up the Kinetic Energy of the Crash and slowing the impacting vehicle in a controlled manner
Vehicles impacting beyond Post 4 are contained and redirected in a controlled manner – LON Begins @ Post 4
Hit Type IX CATFlimsy Nose Section crushed
Post 1 & 2 Broken Off
Shredded Rail Panels after Telescoping 10 feet of Rail
through Bolt Assembly
Type IX Crash Cushion CAT-350
Trinity Highway Products
Kentucky utilizes the CAT-350 in Median situations where guardrail or a crash cushion is needed because the CAT has guardrail on both sides. Therefore a vehicle hitting it on the backside is hitting guardrail and not the backside of guardrail post.
Type IX Crash Cushion CAT-350
Trinity Highway Products
No Concrete Pad is Required
Type IX Crash Cushion CAT-350 Standard
Drawings RBB-002 Guardrail and Bridge End
Drainage for Twin Structures RBB-003 Layout of Guardrail at Twin
Structures (Depressed Median) RBE-200 Crash Cushion Type IX RBE-205 Crash Cushion Type IX-A RBI-007 Crash Cushion Type IX
Installation at Median Piers (Depressed Median)
Key components: 1. Channel Strut 2. Cable Assembly 3. Spacer Channel 4. Restraint Rod(2) 5. Knockout Tube(2) 6. Post Plates(2) 7. Soil Tubes(6) 8. Soil Plates(6) 9. Splice Bolt Assembly
1
1
2
3 4 4
5 56
Each Post 7&8
9 9
The Mounting Height of the Type IX CAT will remain @ 27
¾”
Site PreparationStandard Drawing RBI-007
This Point Same ElevationAs Inside Pavement Edge
Site PreparationStandard Drawing RBB-
002
Site PreparationGrading too steep – not 12:1
MinInlet too close
What could we have done differently
here?
Side Slope to SteepRemember 4 inches in 5 feet
Grading too steep – Note 6 RBI-007 Pavement & Grade
Under Rail Same Elev.
Per Bill Gulick
“You CANNOT Disconnect Grading and Guardrail”
Installation of Soil Tubes and Soil Plates
KY Uses the 6 Post CAT-350 with 6 Soil Tubes with Soil Plates
The Soil Plates are placed on the downstream side of the post
Soil tubes and soil plates can be driven in permeable soil or if impermeable soil placed in 12” drilled hole with slots for soil plates cut by hand with a rock bar
Installation of Soil Tubes and Soil Plates
Post are spaced @ 6’3” on centers Soil Tubes must be less than 4”
above finished grade If rock is encountered see
manufactures instructions
Installation of Soil Tubes and Soil Plates
Post Placement
Post are only 3’6” long due to Soil Plates Notched side of Post 1 faces Post 2 Place Pipe Sleeves for Cable Assembly in
Post 1 & 2 before placement Post 1 & 2 are not secured to the Soil Tube
until the Strut is placed Post 3-6 are secured to the Soil Tube with
a 5/8” x 9 ½” Hex Bolt & Nut DO NOT overtighten bolts and deform
Tubes
Notched side of Post 1 faces Post 2
Place Pipe Sleeves for Cable Assembly in Post 1
& 2
Six Wood Post and Soil TubesStrut and Tubes @ Ground
Line
Installing the Strut Bolt goes through Strut, Soil Tube
and the Wood Post A washer is placed between the
Bolt head and the Strut and the Nut and the Strut
DO NOT OVERTIGHTEN bolts and deform Soil Tubes
Strut Bolt to Tight (slightly)Deforming Side of Soil Tube
No Washers
Strut and Soil Tubes at Ground Line
Installing the Wood Blockouts and Guardrail
NO Rail to Post connections at Post 3, 5 and 6 @ Post 3, 5 and 6 Attach 2 Blockouts to each
Post with two 5/8” x 24” Bolts and Nuts with Washers under the Bolt Head and the Nut
Two 10 Gage Slotted Rail Panels between Post 4 & 6 with plates welded to the backside on one end. Welded Plates placed at Post 4.
Panels are lapped to outside of rail at Post 6 to allow for Telescoping of the Rail Panels
Welded Plates on 10 Gage Rail Panel Placed at Post 4 with 12 Gage Rail Lapped over the 10
Gage Rail
Installing the Wood Blockouts and Guardrail
Connect Welded Plates of 10 Gage Rail with 2 Wood Blockouts to Post 4 with 2 - 5/8” x 24” Hex Bolts and Nuts with Washers under the Bolt Head and the Nut
12 Gage Slotted Rail Panels positioned 8¼” long slots at Post 4, the four (4) ¾” diameter holes are positioned at Post 2
12 Gage Slotted Rail Panels are lapped outside of the 10 Gage Rail at Post 4 so it can Telescope Properly
Welded Plates on 10 Gage Rail Panel Placed at Post 4 with 12 Gage Rail Lapped over the 10
Gage Rail
Installing the Wood Blockouts and Guardrail
Rail splice @ Post 6 - Eight Plate Washers (top and underside of rail) and 8 SPECIAL 5/8” x 1¾” Bolts with “CAT” on the Bolt Head
Special Splice Bolts (Top 1” unthreaded with “CAT” on the top of the bolt) are utilized to allow Telescoping Action
DO NOT SUBSTITUTE Bolts with “CAT” on the Bolt Head – these Bolts are necessary to allow the Rail to Telescope upon impact
Special CAT Bolts and Plate Washer Connection (Top and
Bottom)@ Post 6 & Properly Lapped
Close up photo of the Special CAT Splice Bolt with “CAT” on top
Installing the Wood Blockouts and Guardrail
Rail splice @ Post 4 - Eight Plate Washers (top and underside of rail) and 8 SPECIAL 5/8” x 1¾” Bolts with “CAT” on the Bolt Head
Special Splice Bolts (Top 1” unthreaded with “CAT” on the top of the bolt) are utilized to allow Telescoping Action
DO NOT SUBSTITUTE Bolts with CAT on the Bolt Head – these Bolts are necessary to allow the Rail to Telescope upon impact
12 Gage Rail Panels Lapped over 10 Gage Rail Panels @ Post 4 with Special CAT Bolt and Rectangular Washer
Connection
Splice Bolt Assembly Rectangular Washers on Top and Backside of Rail
Panels
Panels are suppose to be lapped to outside of rail at Post 4 & 6 to allow for Telescoping of
the Rail Panels
Improperly Lapped Cannot
Telescope.The Rail will
Bind Up & NOT Perform Properly
Installing the Wood Offset Blocks and Guardrail
Spacer Channel @ Post 2 Attach the rail at Post 2 with 2 Wood Offset
Blocks, using a 5/8” X 25” Post Bolt 2 Rectangular Washers and a Hex Nut
Before tightening the Rails and Offset Blocks to Post 2, install the Spacer Channel with 8 Bolts and Nuts between the rails downstream from post 2. Locate the Spacer Channel so that brace with the 1¼” diameter hole is closest to Post 2
Spacer Channel @ Post 2 Note Blockouts are loose – not properly Nailed @ Top
Post 1-3 Spacer Channel @ Post 2 and Restraint Rod @
Post 3
Spacer Channel
Restraint Rod
Assembling the Nose Section
Bolt the Side Plates to the end of each 12-Gage Rail Panel
Place the Tube Sleeve over Post 1 (Notched Post)
Nose Section is attached to Post 1 using a 5/8" X 25" post bolt
Narrow Wood Offset Blocks are placed between the Nose Section and the post
Bolt the Side Plates to the end of each 12-Gage Rail Panel
Tube Sleeve over Post 1Narrow Wood Post in place
Assembling the Nose Section Continued
Rectangular Washers are placed between the 5/8” x 25” Post Bolt Head and Nose Section and the Hex Nut and the Nose Section. Excess threads should be cut off and peened.
Bolt the Nose Section to the side plates, using eight 5/8" X 1- ¼ “ Slice Bolts and Hex Nuts
Nose section Bolted to the Side Plates and 5/8” x 25”
Bolt with Rectangular Washer @ Post 1
Nose Section in Place With Nose Section Bolted to the Side Plates
& Post 1 Side Plates Bolted to Rail
Installing the Cable Anchor Assembly
Slide one end of the Cable through the Pipe Sleeve at the base of Post 1.
Place the Bearing Plate over the cable stud with the 5” dimension up and the 3” down
Place a Washer and Nut over the end of the Cable Assembly and tighten
Prevent the bearing plate from rotating by driving two nails along its top edge and bending them over
Bearing Plate not oriented properly (5” not up) and not
Nailed @ Top Does have Double Nut & Washer
Bearing Plate with 2 bent nails
preventing rotation
Installing the Cable Anchor Assembly
Slide the other end of the Cable through the Pipe Sleeve at the top of Post 2 and then through the 1¼” diameter hole in the Spacer Channel
Place a 1” Washer over the end of the Cable Assembly and secure with a Nut and tighten on this end
Restrain the cable with vise grips to avoid twisting the cable
Installing the Cable Anchor Assembly
After tightening a second Nut is added to each end of the Cable Assembly to prevent loosening
Anchor Cable through Post 2 and Spacer Channel – Washer and Double Nut
Installing the Buckling Restraining Rods
Install the Buckling Restraining Rod in the slot (behind Post 5) of the 10-Gage Rail Panels and in the Slot (behind Post 3) of the 12-gage Rail Panels
The Restraining Rod is threaded on each end
A Nut, Lock Washer and another Nut is placed on each end of the Restraining Rod
Installing the Buckling Restraining Rods
The completed assembly is inserted through the Holes in the Rail Panel, with one Nut and Lock Washer on the inside of the Rail Panel and the other Nut on the outside of the Rail Panel
The Buckling Restraining Rod Assembly is placed in the smaller Slotted Hole
The outside Nuts are snugged up to the rail panels, the inside nuts are then snugged up to the inside of the rail panels.
Restraining Rod in Placewith Nuts inside and out
and Lockwashers on Inside
Restraining Rod is NOT pulled back snug and No Lockwasher on the
Inside
Installing the Knockout Blocks and Post Plates
Connect the Knockout Blocks to the upstream side (toward the nose) of Posts 4 and 6 with two (2) 3/8" X 2" Lag Screws and a Flat Washer placed under the Lag Screw Head.
The Knockout Blocks should be installed parallel to the ground and should be located 4” down from top of the Post
Attach Post Plates to the top of Post 4 with a 5/8" X 7½” Hex Bolt and Nut
Knockout Blocks @ Post 4 & 6, Post Plates @ Post 4
Knockout Block with Post Plates @ Post 4
Type IX Assembly is Complete
Flared Type IX in median hit
Note how it gated
Vehicles impacting beyond LON @ Post 4 are contained and redirected in a controlled
manner
Good Stuff to Know
Included with each CAT-350 shipment is a can containing bags of attachment hardware. These bags are individually tagged showing the location of the posts where the hardware in that bag is to be used. This is extremely helpful.
If there are special field conditions encountered when installing the CAT-350, contact Trinity Engineering @1-800-644-7976 to review the conditions
CAT-350Installation Instructions
The Installation Instructions for the CAT-350 can be accessed at:
http://www.highwayguardrail.com/products/pdfs/CAT-Manual.pdf
All of Trinity Highway Products can be accessed at:
http://www.highwayguardrail.com/
CAT-350Installation Manual
Type IX CAT-350 Approved Shop Drawing
Shows everything very well
Q & A Time1. See Anything Wrong??
(5)
1. Rectangular Washer
2. Cable Loose3. Cable not double
nutted4. Bearing Plate
upside down
5. Bearing PlateNot nailed @ top
Q & A Time2. See Anything Wrong??
Knock Out Block on wrong side
of Post
Q & A Time3. See Anything Wrong??
(3)
1. Offset Blocks not
Nailed @ Top
2. No Knockout Block
3. Post Plates Rotated
Post 2
Post 4
Q & A Time4. See Anything Wrong??
Post 4 Only 1 Lag ScrewIn Knockout Block
Post 6 Only 1 Lag Screw
& Not Tight
Q & A Time5. See Anything Wrong??
1. Improper Lap –Left - Cannot Telescope Right - OK
2. Only 1 Lag Screw
3. Post Plates Belong @ Post 4
Post 6