National Academies Press: OpenBook

Investigation of Material Requirements for Highway Guardrail Systems (2022)

Chapter: Appendix C: Commentary for AASHTO M 180 Updates

« Previous: Appendix B: Proposed AASHTO M 180 Specification Update with Redline Strikeout
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Suggested Citation:"Appendix C: Commentary for AASHTO M 180 Updates." National Academies of Sciences, Engineering, and Medicine. 2022. Investigation of Material Requirements for Highway Guardrail Systems. Washington, DC: The National Academies Press. doi: 10.17226/26811.
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Page 80
Page 79
Suggested Citation:"Appendix C: Commentary for AASHTO M 180 Updates." National Academies of Sciences, Engineering, and Medicine. 2022. Investigation of Material Requirements for Highway Guardrail Systems. Washington, DC: The National Academies Press. doi: 10.17226/26811.
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Page 79

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80 Appendices A and B are not printed herein but can be found on the project description page for NCHRP Project 22-40 (https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID= 4586). Appendix C: Commentary for AASHTO M 180 Updates, and Appendix D: Commentary for AASHTO M 180 Updates with Redline-Strikeout are being provided separately to AASHTO and are not published as part of this report. Appendix A: Proposed AASHTO M 180 Specification Update Appendix B: Proposed AASHTO M 180 Specification Update with Redline Strikeout

References 79   Schrum, K., Lechtenberg, K., Bielenberg, B., Rosenbaugh, S., Faller, R., Reid, J., and Sicking, D. Safety Perfor- mance Evaluation of the Non-blocked Midwest Guardrail System (MGS). Midwest Roadside Safety Facility, Lincoln, Nebraska. 2013. Sheikh, N.M., Menges, W.L., and Kuhn, D.L. MASH TL-3 Evaluation of 31-Inch W-Beam Guardrail with Wood and Steel Posts in Concrete Mow Strip. Texas A&M Transportation Institute Proving Ground, College Station, TX. 2019. Stolle, C., Lechtenberg, K., Reid, J., Faller, R., Bielenberg, B., Rosenbaugh, S., Sicking, D., and Johnson, E. Deter- mination of the Maximum MGS Mounting Height - Phase I Crash Testing. Midwest Roadside Safety Facility, Lincoln, Nebraska. 2012. Stolle, C., Lechtenberg, K., Reid, J., Faller, R., Bielenberg, B., Rosenbaugh, S., Sicking, D., and Johnson, E. Deter- mination of the Maximum MGS Mounting Height - Phase I Crash Testing - Revision- 1. Midwest Roadside Safety Facility, Lincoln, Nebraska. 2015. Tavarez, J. Are You Properly Specifying Materials? Steelwise, April 2018. TF13. TF13 Hardware Guide. http://www.tf13.org/. Accessed 9/20/2019. 2019. Thiele, J.C., Lechtenberg, K.A., Reid, J.D., Faller, R.K., Sicking, D.L., Bielenberg, R.W. University of Nebraska– Lincoln, Nebraska Department of Roads, and Federal Highway Administration. Performance Limits for 6-in. (152-mm) High Curbs Placed in Advance of the MGS Using MASH Vehicles Part II: Full-Scale Crash Testing. 2009. Thiele, J.C., Reid, J.D., Lechtenberg, K.A., Faller, R.K., Sicking, D.L., and Bielenberg, R.W. Performance Limits for 6-in. (152-mm) High Curbs Placed in Advance of the MGS Using MASH Vehicles Part III: Full-Scale Crash Testing (TL-2). University of Nebraska–Lincoln, Lincoln, NE. 2010. TxDOT. Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges. 2014. VDOT. Road and Bridge Specifications. 2016. Weiland, N., Reid, J., Faller, R., Sicking, D., Bielenberg, B., and Lechtenberg (Polivka), K. Minimum Effective Guardrail Length for the MGS. Midwest Roadside Safety Facility, Lincoln, Nebraska. 2013. WYDOT. Standard Specifications for Road and Bridge Construction. 2010.

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 Investigation of Material Requirements for Highway Guardrail Systems
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Manufacturers and hardware suppliers use significant time and resources to provide guardrail materials according to one state agency’s design and material standards, only to start the process all over again to satisfy another state’s specifications. Such inconsistency often leads to increased fabrication costs for hardware suppliers that are ultimately passed along to transportation agencies.

The TRB National Cooperative Highway Research Program's NCHRP Research Report 1020: Investigation of Material Requirements for Highway Guardrail Systems provides a comprehensive review of the various current standards and proposes needed revisions to bring specifications into conformance with current requirements and the state of practice for highway guardrail systems.

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