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                Safety Eligibility Letter B-136A
  
  **Hardware Type:**
            Longitudinal Barriers and Bridge Rails
                          **Code:**
            B-136A
                          **Date:**
            02/02/2017
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            Evonik Cyro LLC
                          **Device Description:**
            Noise Wall atop concrete barrier
                          **View PDF:**
            b136a.pdf (8.5 MB)
    
    Safety Eligibility Letter B-136a



			 

			**Download Version**PDF [7.90 MB]

			1200 New Jersey Ave. S.E.Washington, D.C. 20590			

	  DOT logoU.S. Department of Transportation**Federal Highway Administration**



	  February 2, 2017
	  Reply Refer To: 
      HSST-1/B-136a
Nathan Binette
  Evonik Cyro LLC
  1796 Main Street
  Sanford, Maine 04073
Dear Mr. Binette:
This letter is in response to your December 22, 2015, request  for the Federal Highway Administration (FHWA) to review a roadside safety device,  hardware, or system for eligibility for reimbursement under the Federal-aid  highway program. This FHWA letter of  eligibility is assigned FHWA control number B-136A and is valid until a  subsequent letter is issued by FHWA that expressly references this device.
***Decision***
The following devices are eligible, with details provided  in the form which is attached as an integral part of this letter:
ACRYLITE Soundstop TL-4 Noise Barrier System***Scope of this  Letter***
To be found eligible for Federal-aid funding, modified roadside  safety devices should meet the crash test and evaluation criteria contained in  the National Cooperative Highway Research Program (NCHRP) Report 350. However,  the FHWA, the Department of Transportation, and the United States Government do  not regulate the manufacture of roadside safety devices. Eligibility for  reimbursement under the Federal-aid highway program does not establish  approval, certification or endorsement of the device for any particular purpose  or use.
This letter is not  a determination by the FHWA, the Department of Transportation, or the  United States Government that a vehicle  crash involving the device will result in any particular outcome, nor is it a  guarantee of the in-service performance of this device. Proper manufacturing,  installation, and maintenance are required in order for this device to function  as tested.
This finding of eligibility is limited to the  crashworthiness of the system and does not cover other structural features, nor  conformity with the Manual on Uniform Traffic Control Devices.
***Eligibility for  Reimbursement***
FHWA previously issued an  eligibility letter for the roadside safety system described in your pending  request. Your pending request now identifies a modification to that roadside  safety system.
The original roadside safety device information is provided here:
Name of system:
      Paraglas Soundstop Noise Wall TL-4Type of system:
      Noise Wall atop concrete barrierDate of original Request:
      April 12, 2005Original eligibility letter date:
      May 18, 2005FHWA Control number:
      B-136Date of current request:
      December 22, 2015Complete submission received:
      December 2, 2016The modification(s) consists of  the following changes:
1) Connection details of horizontal rails to posts.
    2) Replacement of four 3/4" diameter anchors with  four 7/8" diameter anchors. 
    3) Modification of noise barrier panel inserts to reduce  snag potential of vehicle components. 
    4) Replacement of fabricated splice sleeves with commonly  available tube sections. 
    5) Clarification of allowable horizontal rail positions  for concrete bridge rails of varying depths. 
    6) Clarification of allowable expansion joint details and  associated splice connections. 
    7) Clarification of lowest horizontal rail position for  parapets of different heights. 
    8) Clarification of allowable heights of the system and  associated top horizontal rail  position.
    9) Alternate anchorage details to address variability in  parapet shapes.
  FHWA concurs with the  recommendation of the accredited crash testing laboratory as stated within the  attached form. We also note the change  in the name of the "Paraglas" material to "Acrylite" with no change in the  product design or characteristics.

***Full Description  of the Eligible Device***
The device and supporting documentation, including reports  of the crash tests or other testing done, videos of any crash testing, and/or  drawings of the device, are described in the attached form.
***Notice***
If a manufacturer makes any modification to any of their  roadside safety hardware that has an existing eligibility letter from FHWA, the  manufacturer must notify FHWA of such modification with a request for continued  eligibility for reimbursement. The  notice of all modifications to a device must be accompanied by:
Significant  modifications – For these modifications, crash test results must be submitted  with accompanying documentation and videos.
    Non-signification  modifications – For these modifications, a statement from the crash test  laboratory on the potential effect of the modification on the ability of the  device to meet the relevant crash test criteria.FHWA's determination of continued eligibility for the  modified hardware will be based on whether the modified hardware will continue  to meet the relevant crash test criteria.
You are expected to supply potential users with sufficient  information on design, installation and maintenance requirements to ensure  proper performance.
You are expected to certify to potential users that the  hardware furnished has the same chemistry, mechanical properties, and geometry  as that submitted for review, and that it will meet the test and evaluation criteria  of the NCHRP Report 350.
Issuance of this letter does not convey property  rights of any sort or any exclusive privilege. This letter is based on the  premise that information and reports submitted by you are accurate and correct.  We reserve the right to modify or revoke this letter if: (1) there are any  inaccuracies in the information submitted in support of your request for this  letter, (2) the qualification testing was flawed, (3) in-service performance or  other information reveals safety problems, (4) the system is significantly  different from the version that was crash tested, or (5) any other information  indicates that the letter was issued in error or otherwise does not reflect  full and complete information about the crashworthiness of the system.
***Standard Provisions***
To prevent misunderstanding by others, this  letter of eligibility designated as FHWA control number B-136A shall not be  reproduced except in full. This letter  and the test documentation upon which it is based are public information. All such letters and documentation may be  reviewed upon request.

  This letter shall not be construed as authorization  or consent by the FHWA to use, manufacture, or sell any patented system for  which the applicant is not the patent holder.
  If the subject device is a patented product it may be  considered to be proprietary. If  proprietary systems are specified by a highway agency for use on Federal-aid  projects: (a) they must be supplied through competitive bidding with equally  suitable unpatented items; (b) the highway agency must certify that they are  essential for synchronization with the existing highway facilities or that no  equally suitable alternative exists; or (c) they must be used for research or  for a distinctive type of construction on relatively short sections of road for  experimental purposes. Our regulations concerning proprietary products are  contained in Title 23, Code of Federal Regulations, Section 635.411.Sincerely yours,
/* Signature of Scott T. Johnson */
      Scott T. Johnson
       Acting Director, Office of Safety Technologies
       Office of SafetyEnclosures U.S. DEPARTMENT OF TRANSPORTATION

**Federal Highway Administration**

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

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