Transcription of Virginia Department of Transportation
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Virginia Department of Transportation
Virginia Department of Transportation Guardrail Installation training Manual --GRIT-- Procedures and Practices for the Design, Installation, Replacement, and Repair of Guardrail and Crash Terminals August 2017 TABLE OF CONTENTS CHAPTER 1: INTRODUCTION TO ROADSIDE SAFETY A. The Need for Barrier training .. 1- 1 B. Clear Zone .. 1- 1 C. Barrier 1- 4 D. Barrier Flare Rates, Runout Length, and Shy line .. 1- 6 E. Length of Need .. 1- 7 F. Guardrail Testing Requirements .. 1- 8 G. Deflection .. 1- 8 H. Soil Backing .. 1- 10 I. Barriers on Slopes .. 1- 10 J. Curb Use with Guardrail .. 1- 10 K. Measuring the Height of Guardrail Systems .. 1- 11 CHAPTER 2: STANDARD GUARDRAIL SYSTEMS A.
A. NEED FOR BARRIER TRAINING . 1. Annually in the US, there are over 40,000 fatalities on our nation’s highways; more than half of them occurred as a result of a Roadway Departure- (RwD) crash. RwD Crashes are defined as a single vehicle leaving the roadway. 2. Guardrail fatalities Over 1,500 of the R- wD fatalities are caused by a roadside
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