U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Ave. S.E.
Washington, D.C. 20590
March 8, 2012
In Reply Refer To:
HSST/CC-112B
Mr. Barry D. Stephens, P.E.
Sr. Vice President Engineering
Energy Absorption Systems, Inc.
3617 Cincinnati Avenue
Rocklin, CA 95678
Dear Mr. Stephens:
This letter is in response to your request for the Federal Highway Administration (FHWA) to review a roadside safety system for eligibility for reimbursement under the Federal-aid highway program.
Name of system: | 2-bay to 6-bay QuadGuard® M10 CZ (24", 30" and 36") |
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Type of system: | Impact Attenuator with Transitions |
Test Level: | AASHTO Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) |
Testing conducted by: | E-Tech Testing Services, Inc. |
Task Force 13 Designator: | SCI26b |
Date of request: | March 11, 2011 |
Date initially acknowledged: | March 11, 2011 |
Date of completed package: | February 10, 2012 |
Decision
The following devices are eligible, with details provided:
Based on a review of crash test results submitted by the manufacturer certifying the device described herein meets the crashworthiness criteria of the American Association of State Highway and Transportation Officials' Manual for Assessing Safety Hardware (MASH), the device is eligible for reimbursement under the Federal-aid highway program. Eligibility for reimbursement under the Federal-aid highway program does not establish approval or endorsement by the FHWA for any particular purpose or use.
The FHWA, the Department of Transportation, and the United States Government do not endorse products or services and the issuance of a reimbursement eligibility letter is not an endorsement of any product or service.
Requirements
Roadside safety devices should meet the guidelines contained in the MASH.
Description
The 6-bay QuadGuard (QG) M10 CZ is identical to the 6-bay QuadGuard M10 except for its anchoring system. The QG M10 CZ is installed using the "MP-3 Longbolt System," which uses a two-part polyester grout to anchor ¾-inch diameter by 18 inches long threaded rods to a foundation of 6 inches deep asphalt over a 6 inches deep compacted sub-base. The rods are to be embedded to a minimum depth of 16 inches into 7/8-inch diameter drilled holes. A total of 50 anchors are needed. The anchoring system and one-page test summary are included as an enclosure to this correspondence.
Crash Testing
The following MASH Test 3-35 was completed for FHWA review of the QG M10 CZ 610 mm [24 inch] Parallel system:
QuadGuard M10 CZ
The summary of the above test is included as an enclosure to this correspondence.
The following lists all required tests for TL3 as per the MASH. In addition, crash test 3-35 was the only physical test conducted with asphalt anchorage as this specific test is considered the worst case, or greatest loading, on the asphalt anchors. All other MASH Tests are as referenced in existing FHWA eligibility letter HSST/CC-112 dated February 9, 2011.
MASH Test Illustration | MASH Test # | Completed | Notes |
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3-30 | NO | Test 3-32 was completed as Worst Case for 1100C. | |
3-31 | YES* | Passed all ORV's. 6-Bay 610 mm [24 inches] Narrow System was tested and passed all Occupant Risk Values. This test was completed on concrete. Test 3-35 is the worst case for asphalt. |
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*FHWA eligibility letter HSST/CC-112 dated February 9, 2011 | |||
3-32 | YES* | Passed all ORV's. 5-Bay 914 mm [36 inches] Narrow System was tested. This test was completed on concrete. Test 3-35 below is the worst case for asphalt. |
|
3-33 | NO | Test 3-31 tested system capacity for 2270P and is considered worst case. Test 3-35 below is worst case for asphalt. | |
3-34 | YES* | Passed all ORV's. 5-Bay 610 mm [24 inches] Narrow System was tested. This test was completed on concrete. Test 3-35 below is the worst case for asphalt. |
|
3-35 | YES | This test was completed on asphalt. This test exerts the most intense forces on the anchors. | |
3-36 | YES* | Passed all ORV's. 5-Bay 610 mm [24 inches] Narrow System with no new nose brackets was tested. Test was completed on concrete. This test applies the force on the anchors as test 3-35. |
|
3-37 | YES* | Passed all ORV's. |
|
3-38 | YES* | The recommended MASH analysis was completed and all calculated ORV's passed. This test was completed on concrete. Test 3-35 is the worst case for asphalt. |
Please note the following standard provisions that apply to the FHWA letters of acceptance:
Sincerely yours, /* Signature of Michael S. Griffith */
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Enclosures