Presentation on theme: "Session 8 Type IX Crash Cushion CAT-350 Trinity Highway Products"— Presentation transcript:
1Session 8 Type IX Crash Cushion CAT-350 Trinity Highway Products CAT - Crash Attenuating TerminalThe Type IX CAT has more parts than any other End Terminal. It has been re-engineered to make it more difficult to install improperly. This was a major improvement however, it is often installed improperly.
2Installation 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 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 terminalsWhat dose this statement mean??ClickNote #3 has been on proprietary guardrail end treatment Standard Drawings for many years. How many of you have seen this note and required the Shop Drawings?You should require this before allowing installation to begin. Probably all you need to do is require it once and the contractor will have the required information from that date forward.
3Type 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 mannerVehicles impacting beyond Post 4 are contained and redirected in a controlled manner – LON Post 4
4Hit Type IX CAT Flimsy Nose Section crushed Post 1 & 2 Broken Off
5Shredded Rail Panels after Telescoping 10 feet of Rail through Bolt Assembly
6Type 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.
7Type IX Crash Cushion CAT-350 Trinity Highway Products KY EB Bluegrass Parkway & APD Route in Eastern KYNo ConcretePad is Required
8Type IX Crash Cushion CAT-350 Standard Drawings RBB-002 Guardrail and Bridge End Drainage for Twin StructuresRBB-003 Layout of Guardrail at Twin Structures (Depressed Median)RBE-200 Crash Cushion Type IXRBE-205 Crash Cushion Type IX-ARBI-007 Crash Cushion Type IX Installation at Median Piers (Depressed Median)
10Key components: 1. Channel Strut 2. Cable Assembly 3. Spacer Channel 4 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 Assembly44135652Each CAT has a flexible 10 Gauge Nose & a notched first Post 1. Channel Strut 2. Cable Assembly 3. Spacer Channel to hold rail together as it telescopes back 4. Restraint Rods to keep rail from bowing out 5 Knockout tubes to remove Restraint Rods 6 Post Plates 7&8 Short Soil Tube Sleeves and Soil PlatesPlus Special splice bolt assemblyThe following slides will show close ups of these items991Each Post 7&8
11The Mounting Height of the Type IX CAT will remain @ 27 ¾”
12Site Preparation Standard Drawing RBI-007 This Point Same ElevationAs Inside Pavement EdgeSite Preparation is critical for the proper performance of the CAT.
13Site Preparation Standard Drawing RBB-002 Note: need fairly flat slopes (12:1) coming into the nose of the Type IX CAT.
14Site Preparation Grading too steep – not 12:1 Min Inlet too close I do not know why this cross is here. What we do in our daily jobs is to strive to eliminate crosses from our roadsides.There is no apparent damage to CAT.I do know that the Inlet is to close and the grading is too steep. You would be in an upward trajectory – not level - before you would hit the end of this Type IX.SOLUTIONS:Type VI Crash Cushion closer to pier and regrade to 12:1Cap drop inlet, move upstream with new dropbox and pipe water to old boxWhat could we havedone differently here?
15Side Slope to Steep Remember 4 inches in 5 feet I-64 – Cane Run Road – side slope was to steep and was re-graded.You would be pushing gravel before you hit the end of this Type IX Crash Cushion.
16Grading too steep – Note 6 RBI-007 Pavement & Grade Under Rail Same Elev. I-64 – Cane Run RoadRemember Note 6 on Slide 8 which states “6. This point same elevation as inside pavement edge. “SYRO notes say the top of rail should be approx. 27 inches above the edge of the pavement.Problem begins with Concrete work which was to high, then Crash Cushion was likewise placed to high. Had to completely remove and rebuild.
17“You CANNOT Disconnect Grading and Guardrail” Per Bill Gulick“You CANNOT Disconnect Grading and Guardrail”You can have a PERFECTLY installed guardrail end treatmentBUTIf the grading around it is not proper you can have poor performance:Grading coming into end treatment not flat enough so vehicle is flat when it hits railSlopes in advance, adjacent or run out with improper grading can/will have catastrophic consequences!!!
18Installation of Soil Tubes and Soil Plates KY Uses the 6 Post CAT-350 with 6 Soil Tubes with Soil PlatesThe Soil Plates are placed on the downstream side of the postSoil 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
19Installation of Soil Tubes and Soil Plates Post are 6’3” on centersSoil Tubes must be less than 4” above finished gradeIf rock is encountered see manufactures instructions
20Installation of Soil Tubes and Soil Plates Six Wood Post and Soil Tubes with Soil Plates on 6’3” centers and graded such that all of the Soil Tubes are less than 4” above finished grade.
21Post Placement Post are only 3’6” long due to Soil Plates Notched side of Post 1 faces Post 2Place Pipe Sleeves for Cable Assembly in Post 1 & 2 before placementPost 1 & 2 are not secured to the Soil Tube until the Strut is placedPost 3-6 are secured to the Soil Tube with a 5/8” x 9 ½” Hex Bolt & NutDO NOT overtighten bolts and deform Tubes
28Installing 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 NutTwo 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
29Welded Plates on 10 Gage Rail Panel Placed at Post 4 with 12 Gage Rail Lapped over the 10 Gage Rail
30Installing 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 Nut12 Gage Slotted Rail Panels positioned 8¼” long slots at Post 4, the four (4) ¾” diameter holes are positioned at Post 212 Gage Slotted Rail Panels are lapped outside of the 10 Gage Rail at Post 4 so it can Telescope Properly
31Welded Plates on 10 Gage Rail Panel Placed at Post 4 with 12 Gage Rail Lapped over the 10 Gage Rail You start telescoping the 12 Gage Rail thru the Splice Assembly shredding the rail to begin slowing down the impacting vehicle. Then you get real serious about stopping the vehicle and begin telescoping the 10 Gage Rail thru the Splice Assembly shredding the 10 Gage Rail to finish decelerating the impacting vehicle.
32Installing the Wood Blockouts and Guardrail Rail Post 6 - Eight Plate Washers (top and underside of rail) and 8 SPECIAL 5/8” x 1¾” Bolts with “CAT” on the Bolt HeadSpecial Splice Bolts (Top 1” unthreaded with “CAT” on the top of the bolt) are utilized to allow Telescoping ActionDO NOT SUBSTITUTE Bolts with “CAT” on the Bolt Head – these Bolts are necessary to allow the Rail to Telescope upon impact
33Special CAT Bolts and Plate Washer Connection (Top and Bottom) @ Post 6 & Properly Lapped Special CAT Bolt and Rectangular Washer Connection to facilitate telescoping and shredding of the Guardrail to burn up the Kinetic Energy of the Crash
34Close up photo of the Special CAT Splice Bolt with “CAT” on top Pass around one of the special bolts with the top 1” not threaded so you can only tighten the bolt only so much. Allows the Slotted Rail Panels to Telescope through the Splice Bolt Assembly and Shred the Rail.
35Installing the Wood Blockouts and Guardrail Rail Post 4 - Eight Plate Washers (top and underside of rail) and 8 SPECIAL 5/8” x 1¾” Bolts with “CAT” on the Bolt HeadSpecial Splice Bolts (Top 1” unthreaded with “CAT” on the top of the bolt) are utilized to allow Telescoping ActionDO NOT SUBSTITUTE Bolts with CAT on the Bolt Head – these Bolts are necessary to allow the Rail to Telescope upon impactThe 8 Rectangular Plate Washer and 8 Special Bolts with “CAT” on top of the bolt and the top 1” of the shank unthreaded allow the rail panels to Telescope through the bolt and washer Assembly and shred the rail to burn up the Kinetic Energy of the Crash
3612 Gage Rail Panels Lapped over 10 Gage Rail Post 4 with Special CAT Bolt and Rectangular Washer Connection12 Gage Rail Panels Lapped over 10 Gage Rail Post 4 with Special CAT Bolt and Rectangular Washer Connection to facilitate telescoping and shredding of the Guardrail to burn up the Kinetic Energy of the Crash
37Splice Bolt Assembly Rectangular Washers on Top and Backside of Rail Panels Even with the Special CAT Bolts tightened completely the Splice Bolt Assembly often will be a little loose. You may be able to jiggle it – this is OK.
38Panels are suppose to be lapped to outside of rail at Post 4 & 6 to allow for Telescoping of the Rail PanelsImproperly Lapped Cannot Telescope.The Rail will Bind Up & NOT Perform Properly
39Installing 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 NutBefore 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
40Spacer Channel @ Post 2 Note Blockouts are loose – not properly Nailed @ Top
41Post 1-3 Spacer Channel @ Post 2 and Restraint Rod @ Post 3
42Assembling the Nose Section Bolt the Side Plates to the end of each 12-Gage Rail PanelPlace the Tube Sleeve over Post 1 (Notched Post)Nose Section is attached to Post 1 using a 5/8" X 25" post boltNarrow Wood Offset Blocks are placed between the Nose Section and the post
43Bolt the Side Plates to the end of each 12-Gage Rail Panel
44Tube Sleeve over Post 1 Narrow Wood Post in place
45Assembling 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
46Nose section Bolted to the Side Plates and 5/8” x 25” Bolt with Rectangular Washer @ Post 1
47Nose Section in Place With Nose Section Bolted to the Side Plates & Post 1 Side Plates Bolted to Rail
48Installing 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” downPlace a Washer and Nut over the end of the Cable Assembly and tightenPrevent the bearing plate from rotating by driving two nails along its top edge and bending them over
49Bearing Plate not oriented properly (5” not up) and not Nailed @ Top Does have Double Nut & Washer Bearing Plate with2 bent nailspreventing rotation
50Installing 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 ChannelPlace a 1” Washer over the end of the Cable Assembly and secure with a Nut and tighten on this endRestrain the cable with vise grips to avoid twisting the cable
51Installing the Cable Anchor Assembly After tightening a second Nut is added to each end of the Cable Assembly to prevent loosening
52Anchor Cable through Post 2 and Spacer Channel – Washer and Double Nut
53Installing 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 PanelsThe Restraining Rod is threaded on each endA Nut, Lock Washer and another Nut is placed on each end of the Restraining RodThe Buckling Restraining Rod helps to prevent the Guard Rail Panels from buckling out upon impact when Rail begins telescoping back thru the Shredder Bolts and Rectangular Washer Assembly.
54Installing 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 PanelThe Buckling Restraining Rod Assembly is placed in the smaller Slotted HoleThe outside Nuts are snugged up to the rail panels, the inside nuts are then snugged up to the inside of the rail panels.
55Restraining Rod in Place with Nuts inside and out and Lockwashers on Inside Without the nuts inside and out and lockwasher washer on the inside the rods can slide around and eventually fall out.
56Restraining Rod is NOT pulled back snug and No Lockwasher on the Inside
57Installing 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 PostAttach Post Plates to the top of Post 4 with a 5/8" X 7½” Hex Bolt and NutKnockout Blocks knock out the Restraining Rods
58Knockout Blocks @ Post 4 & 6, Post Plates @ Post 4 I-64 – Cane Run Road
61Flared Type IX in median hit Note how it gated I-64 WB at Elkhorn Creek. The Type IX is a gating End Terminal or Crash Cushion
62Vehicles impacting beyond LON @ Post 4 are contained and redirected in a controlled manner These photos were taken with a flash at night on Tates Creek Rd at New Circle Rd in Lex.You can observe how the impacting vehicle was contained and prevented from crossing the median. The Type IX performed as Designed.
63Good Stuff to KnowIncluded 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.
64If there are special field conditions encountered when installing the CAT-350, contact Trinity to review the conditions
65CAT-350 Installation Instructions The Installation Instructions for the CAT-350 can be accessed at:All of Trinity Highway Products can be accessed at:
67Type IX CAT-350 Approved Shop Drawing Shows everything very well
68Q & A Time 1. See Anything Wrong?? (5) 1. Rectangular Washer2. Cable Loose3. Cable not doublenutted4. Bearing Plateupside downI-64 EB at MidwayLeft off Rectangular Washer.Did not Double Nut Cable.Cable not taught.Bearing Plate not oriented properlyBearing Plate not nailed at top.5. Bearing PlateNot top
69Q & A Time 2. See Anything Wrong?? Knock Out Blockon wrong sideof PostI-64 – Cane Run RoadNote the Knock OutBlock at Post 4 is on the wrong side of the post, it will not knock out the restraining rod as intended.
70Q & A Time 3. See Anything Wrong?? (3) 2. No Knockout Block3. Post Plates RotatedPost 4Blockout at Post 2 or Post 4 not Nailed at Top.No Knockout Tube at Post 4Post Plates RotatingPost 21. Offset Blocks notTop
71Q & A Time 4. See Anything Wrong?? Post 6Only 1 Lag Screw& Not TightOnly 1 lag screw not 2 as required.Lag Screw not tight enough but does have the required washer.Post 4Only 1 Lag ScrewIn Knockout Block
72Q & A Time 5. See Anything Wrong?? Post 6Improper Lap –Left - Cannot Telescope Right - OK2. Only 1 Lag Screw3. Post Plates Post 4Only 1 lag screw not 2 as required.Lag Screw not tight enough but does have the required washer.