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ACP X-TENSION 350 Installation Manual

Guardrail end terminal median
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December 2018

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Summary of Contents for ACP X-TENSION 350

  • Page 1 December 2018...

  • Page 2: Table Of Contents

    X350-1 - X-Tension 350 Median Composite Blockout to Steel Post details ACP may make changes to this Product Manual from time to time. Please check the ACP website prior to using this Product Manual to ensure that you have the latest version.

  • Page 3: Introduction

    Before Installation Placement and use of the X-TENSION 350 Median Guardrail End Terminal should be done in accordance with the guidelines and recommendations set forth in the “AASHTO Roadside Design Guide”, FHWA memoranda and other government and local standards.

  • Page 4: Limitations And Warnings

    Installation Manual : X-TENSION 350 Median Limitations and Warnings The X-TENSION 350 Median Guardrail End Terminal has been rigorously tested and evaluated per the recommendations in the NCHRP 350 guidelines for terminals. The impact conditions recommended in NCHRP 350 are intended to address typical in–service collisions.

  • Page 5: Parts Identification

    Installation Manual : X-TENSION 350 Median X-TENSION 350 Median Parts Identification Impact Head Friction Plate Soil Anchor (1 required) (1 required) (1 required) Slider Bracket + Angle Bar Cable Bracket Cable Assembly (2 required) (1 required) (2 required) Slider Panel Post 1 –...
  • Page 6 Installation Manual : X-TENSION 350 Median X-TENSION 350 Median Parts Identification continued Post # 2 Standard Steel Line Post (3-6) Post # 1 Bottom (1 required) (1 required) Standard highway rail Median Radius rail 1 Median Secondary Head (5 required) (1 required –...

  • Page 7: Preparation

    See parts identification sheet. Ensure that the area where the X-TENSION 350 Median is to be installed is flat enough so that the soil anchor will not protrude more than 100mm from ground level, when measured with a straight line over a 1.5m cord.

  • Page 8: X-Tension 350 Median Installation

    (Figure 1). Ensure that the area where the X-TENSION 350 Median is to be installed is flat enough so that the soil anchor will not protrude more than 100mm (preferred 75mm) from ground level when measured with a straight line over a 1.5m cord.
  • Page 9 (Figure 3). Determine which side of the barrier will have the Tangent X-TENSION 350 portion of the Median X-TENSION 350 installed parallel to it. (Usually the side that has the heaviest volume of traffic).
  • Page 10 Installation Manual : X-TENSION 350 Median Step 2 - Installing Posts 6 - 2 Install posts 6 to 2 at standard highway rail spacing 1905mm, to the correct height. Posts #6 to #3 are standard “I” beam posts. Post 2 is the special crimped “I”...
  • Page 11 Installation Manual : X-TENSION 350 Median Step 3 - Post 1, Ground Strut and Soil Anchor Place the roadside face of post 1 bottom anchor, 200mm towards the roadway to compensate for the lack of blockout (Figure 7). Post 1 bottom the Ground Strut and the Soil Anchor are then placed parallel to the string line at this roadside offset position.
  • Page 12 Installation Manual : X-TENSION 350 Median Step 5 - Hang Rail 2 and Shear Bolts Before installing rail 2 double check that the blockout is already bolted to post 3. Bolt rail 2 to the post and blockouts at posts 4 and 5 with the appropriate post bolt (Figure 11).
  • Page 13 Installation Manual : X-TENSION 350 Median Step 7 - Assemble Slider Panel onto Rail 1 Start by sitting rail 1 on a blockout or post so that it is raised off the ground as shown (Figure 15). Slide the Slider Panel onto the downstream end of rail at post 3 location (Figure 16) and bolt into place using 4 standard splice bolts, pushing the bolt through from the inside of the slider to the outside so that the nut is on the traffic face.
  • Page 14 Installation Manual : X-TENSION 350 Median Step 9 - Attach Impact Head Place Impact Head on upstream end of rail 1 and attach using 8 standard splice bolts with nuts on traffic face (Figure 20). Hint: Place bottom two bolts first then use guardrail pin bar to lever head up snug onto rail.
  • Page 15 Installation Manual : X-TENSION 350 Median Step 11 - Installing the Cables Install the Friction Plate in the top of the Impact Head, adjustment hole up. Take the cable closest to the road, pick up the downstream cable fitting and walk to the head, passing the cable through the bottom hole, through the Friction Plate (Figure 24) and out the backside of the Impact Head.
  • Page 16 Installation Manual : X-TENSION 350 Median Step 13 - Tightening the Cables Only tighten the cables using the nuts at the Cable Bracket end (post 7) (Figure 28). Do not tighten the cable nuts at front of the Ground Anchor.
  • Page 17 Installation Manual : X-TENSION 350 Median Step 15 - Attach Backside Rail #3 and Rail #2 Rails 3 and 2 are installed like standard guardrail with blockouts between the rail and post (Figure 32). Attach rails to post 2, 4, 5, 6 and 7 with blockouts and post bolts supplied (do not bolt the rail to post 3).
  • Page 18 Installation Manual : X-TENSION 350 Median Step 17 - Assemble Slider Panel onto Backside Rail 1 Raise the straight end of the curved median radius rail 1, as per parts identification, and fit the Slider Panel onto the downstream (straight) end of rail (Figure 34). Bolt into place using 4 standard splice bolts, pushing the bolt through from the inside of the slider to the outside so the nut is on the traffic face.
  • Page 19 Installation Manual : X-TENSION 350 Median Step 18 - Hang Curved Backside Rail #1 Lift rail 1 with Slider Panel attached and push the slider end over rail 2. Bolt rail 1 and blockout to post 2 using supplied standard post bolt and 50x50mm washer on inside of post bolt notch on the backside of post 2 (Figure 35).
  • Page 20 (Figure 38). Delineation to be attached to nosing, as per local roading authority requirements. The X-TENSION 350 Median Plastic Nut Protectors are available for all X-TENSION 350 Median Terminal Ends. They protect pedestrians and cyclists from exposed splice bolt nuts and threads.

  • Page 21: Traffic Face Impact

    Unbolt the splice bolts first. Then unbolt the post bolts and lower rails to ground. Step 3: Remove X-TENSION 350 Median Components All the X-TENSION 350 Median components are attached to the rails with standard splice bolts. Unbolt and remove the components.

  • Page 22: Head On Impacts

    Installation Manual : X-TENSION 350 Median X-TENSION 350 Median Maintenance (Head on Impacts) Head on Impacts Key Repair Steps: 1. Remove the cables 2. Pull the rails back 3. Remove components from rails 4. Remove damaged posts 5. Assess damage 6.

  • Page 23: X350M - X-Tension 350 Median Composite Blockout To Steel Post

    Installation Manual : X-TENSION 350 Median December 2018 / Page 23 Ph 1800 724 172 or visit www.acprod.com.au...

  • Page 24: X350-1 - X-Tension 350 Median Composite Blockout To Steel Post Details

    Installation Manual : X-TENSION 350 Median December 2018 / Page 24 Ph 1800 724 172 or visit www.acprod.com.au...

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