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Safety Edge Guidance and Policy

Safety Edge Design and Construction Guide

U.S. Department of Transportation

Federal Highway Administration

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PDF [1.6 MB]



Table of Contents

[ Foreword ] [ Technical Report Documentation Page ]


Section 1: Introduction
1.1 Introduction
1.2 Purpose of the Guide
1.3 Scope of the Guide
Section 2: Safety EdgeSM – General Design and Construction Considerations
2.1 Safety EdgeSM Use
Where the Safety EdgeSM Can Be Placed
Where the Safety EdgeSM Should Not Be Placed
2.2 Pre-Construction and Discontinuous Paving Operations
2.3 Pavement Edge/Shoulder Preparation
2.4 Slope Measurement
2.5 Backing Material Placement
Section 3: Specific Considerations for Constructing the Safety EdgeSM in Conjunction with New AC Pavements or AC Overlays
3.1 Design Features and Shape
3.2 Equipment – AC Safety EdgeSM Devices
Devices Attached to the Screed
Modification to the End Plate
3.3 Asphalt Concrete Materials
3.4 Safety EdgeSM Construction
Safety EdgeSM Device Installation
AC Placement
Rolling
3.5 Quality Measurement
Section 4: Specific Considerations for Constructing the Safety EdgeSM in Conjunction with New Concrete Pavements or Concrete Overlays
4.1 Design Features and Shape
4.2 Equipment – PCC Safety EdgeSM Devices
4.3 Concrete Mixtures
4.4 Safety EdgeSM Construction
PCC Placement
Transitioning Between Different Edge Profiles
Vibration
Curing
Sawcutting
4.5 Quality Measurement
References
Appendices
Approximate Conversions to SI Units
Symbol When You Know Multiply By To Find Symbol
Length
in inches 25.4 millimeters mm
ft feet 0.305 meters m
yd yards 0.914 meters m
mi miles 1.61 kilometers km
Area
in2 square inches 645.2 square millimeters mm2
ft2 square feet 0.093 square meters m2
yd2 square yard 0.836 square meters m2
ac acres 0.405 hectares ha
mi2 square miles 2.59 square kilometers km2
Volume
fl oz fluid ounces 29.57 milliliters mL
gal gallons 3.785 liters L
ft3 cubic feet 0.028 cubic meters m3
yd3 cubic yards 0.765 cubic meters m3
NOTE: volumes greater than 1000 L shall be shown in m3
Mass
oz ounces 28.35 grams g
lb pounds 0.454 kilograms kg
T short tons (2000 lb) 0.907 megagrams (or "metric ton") Mg (or "t")
Temperature (exact degrees)
°F Fahrenheit 5 (F-32)/9
or (F-32)/1.8
Celsius °C
Illumination
fc foot-candles 10.76 lux lx
fl foot-Lamberts 3.426 candela/m2 cd/m2
Force and Pressure or Stress
lbf poundforce 4.45 newtons N
lbf/in2 poundforce per square inch 6.89 kilopascals kPa

 

Approximate Conversions from SI Units
Symbol When You Know Multiply By To Find Symbol
Length
mm millimeters 0.039 inches in
m meters 3.28 feet ft
m meters 1.09 yards yd
km kilometers 0.621 miles mi
Area
mm2 square millimeters 0.0016 square inches in2
m2 square meters 10.764 square feet ft2
m2 square meters 1.195 square yards yd2
ha hectares 2.47 acres ac
km2 square kilometers 0.386 square miles mi2
Volume
mL milliliters 0.034 fluid ounces fl oz
L liters 0.264 gallons gal
m3 cubic meters 35.314 cubic feet ft3
m3 cubic meters 1.307 cubic yards yd3
Mass
g grams 0.035 ounces oz
kg kilograms 2.202 pounds lb
Mg (or "t") megagrams (or "metric ton") 1.103 short tons (2000 lb) T
Temperature (exact degrees)
°C Celsius 1.8C+32 Fahrenheit °F
Illumination
lx lux 0.0929 foot-candles fc
cd/m2 candela/m2 0.2919 foot-Lamberts fl
Force and Pressure or Stress
N newtons 02.225 poundforce lbf
kPa kilopascals 0.145 poundforce per square inch lbf/in2

* SI is the symbol for the International System of Units. Appropriate rounding should be made to comply with Section 4 of ASTM E380. (Revised March 2003)

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Page last modified on August 12, 2013.
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000