1. Tollway Barrier Guidelines Examples Hands-On Workshop III July 2013 1

2. Each AOC should be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zonep. Compare existing length to proposed h. Clear Zone Adjustmentq. Prepare warrant text and exhibits i. Lateral Extent of the Area of Concern 2

3. Level 2 Example- Location 9 3

4. 4

5. Each AOC shall be analyzed separately. a. Establish EOTW 5

6. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed 6

7. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT 7

8. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout 8

9. L2L2 Figure 5-39. Approach Barrier Layout Variables LRLR 9

10. Level 2 Example- Location 9 10

11. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset 11

12. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope 12

13. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone 13

14. g. Clear Zone Select highest value in range Table 3-1 Clear Zone Distances in Feet from EOTW 14

15. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment 15

16. h. Clear Zone Adjustment 16

17. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 17

18. i. Lateral Extent of the Area of Concern L2L2 Figure 5-39. Approach Barrier Layout Variables LALA 18

19. Level 2 Example- Location 9 Lateral Extent of the Area of Concern L A = L A = 23.9’ + 1.5’ = 25.4’ 19

20. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 20

21. Flowchart for Analysis of Existing Obstacles (Figure 5.5a) 21

22. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 22

23. k. Lateral Offset of Barrier L2L2 Figure 5-39. Approach Barrier Layout Variables L2L2 23

24. Level 2 Example- Location 9 L A = 23.9’ + 1.5’ = 25.4’ Lateral Offset of Barrier L 2 = L 2 = 1’ + 11’ + 1’ = 13.0’ 24

25. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 25

26. Level 2 Example- Location 9 L A = 25.4’ L 2 = 13.0’ Y= Y = L 2 + 0.75’ Y = 13.0’ + 0.75’ Y = 13.75’ 26

27. l. Upstream End of Guardrail L2L2 Figure 5-39. Approach Barrier Layout Variables X= (L A – Y) / (L A / L R ) LALA LRLR L A - Y X 27

28. Level 2 Example- Location 9 L A = 25.4’ L 2 = 13.0’ Y = 13.75’ L R = 360.0’ Length of Need – Formula Solve for X X = (L A – Y) / (L A / L R ) X = (25.4’ – 13.75’) / (25.4’ / 360.0’) X = 165.12’ 28

29. Level 2 Example- Location 9 Obstacle SF Southface_Foundation_Station = SF SF = (3945+98.50) L AOC = Length of AOC = 3.0’ 29

30. l. Upstream End of Guardrail L2L2 Figure 5-39. Approach Barrier Layout Variables Point of Need 30

31. Level 2 Example- Location 9 Point of Need PON = SF – X PON = (3945+98.50) – 165.12’ PON = (3944+33.38) Length of Need = LON = X + L AOC LON = 165.12’ + 3.0’ LON = 168.12’ 31

32. Level 2 Example- Location 9 Distance from back of guardrail to foundation= 25.4’(L A )-3.0’(Fnd.)-13.0’(L 2 )-1.76’(Depth of GR)= 7.64’ Therefore, LON ends at downstream end of obstacle. Condition 2, TBG Figure 5.12 32

33. Level 2 Example- Location 9 Terminals Terminal = Type T2 T2 = 12.5’ (does not count toward length of need) Terminal = Type T1 (Special) T1 = 50.0’ (37.5’ counts toward length of need) Barrier Limits Determination Length of Guardrail L Guardrail = LON – T1 L Guardrail = 168.12’ – 37.5’ L Guardrail = 130.62’ L Guardrail, R = L Guardrail (Round up to the nearest 12.5’ increment) L Guardrail, R = 137.5’ 33

34. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 34

35. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 35

36. Level 2 Example- Location 9 T2 End_Station = SF + L AOC + T2 T2 End_Station = (3945+98.50) + 3’ + 12.5’ T2 End_Station = (3946+14.00) GR End_Station = Begin T2 Station = End T2 Station – 12.5’ GR End_Station = (3946+14.00) – 12.5’ GR End_Station = (3946+01.50) GR Begin_Station = GR End_Station – L Guardrail,R GR Begin_Station = (3946+01.50) – 137.5’ GR Begin_Station = (3944+64.00) T1 Begin_Station = GR Begin_Station – 50’ T1 Station = (3944+64.00) – 50’ T1 Begin_Station = (3944+14.00) 36

37. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 37

38. Barrier Limits Check 12.5’ < |PON- T1 Begin_Station |< 25’ 12.5’ < |(3944+33.38) – (3944+14.00)|< 25’ 12.5’ < 19.38’ < 25’ 38

39. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zonep. Compare existing length to proposed h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 39

40. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zonep. Compare existing length to proposed h. Clear Zone Adjustmentq. Prepare warrant text and exhibits i. Lateral Extent of the Area of Concern 40

41. Level 2 Example – Location 9 – Site Plan 41

42. Questions? 42

43. Level 2 Example- Location 17 43

44. Level 2 Example- Location 17 44 Notes: 1.There is a crash wall in front of the bridge piers. 2.Regrading of the bridge cone is not a feasible alternative.

45. Each AOC shall be analyzed separately. a. Establish EOTW 45

46. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed 46

47. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT 47

48. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout 48

49. d. Length of Runout L2L2 Figure 5-39. Approach Barrier Layout Variables LRLR 49

50. d. Length of Runout 50

51. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset 51

52. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope 52

53. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone 53

54. g. Clear Zone Select highest value in range Table 3-1 Clear Zone Distances in Feet from EOTW 54

55. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment 55

56. h. Clear Zone Adjustment 56

57. Level 2 Example- Location 17 Adjusted Clear Zone = 32’ x 1.2 = 38.4’ 57

58. Each AOC shall be analyzed separately. a. Establish EOTW b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 58

59. i. Lateral Extent of the Area of Concern L2L2 Figure 5-39. Approach Barrier Layout Variables LALA 59

60. Level 2 Example- Location 17 Lateral Extent of the Area of Concern L A = L A = 32’ x 1.2 L A = 38.4’ 60

61. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speed c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 61

62. Flowchart for Analysis of Existing Obstacles (Figure 5.5a) 62

63. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADT d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 63

64. k. Lateral Offset of Barrier L2L2 Figure 5-39. Approach Barrier Layout Variables L2L2 64

65. Level 2 Example- Location 17 L A = 38.4’ L 2 = L 2 = 12.0’ (11’ + 1’) 65

66. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runout e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 66

67. Level 2 Example- Location 17 L A = 38.4’ Lateral Offset of Barrier L 2 = 12.0’ (11’ + 1’) Y = Y = L 2 + 0.75’ Y = 12.0’ + 0.75’ Y = 12.75’ 67

68. l. Upstream End of Guardrail < L R LALA L2L2 Y X Figure 5-48. Example of Barrier Design for Fixed Object on Horizontal Curve Graphical Determination of “X” 68

69. Level 2 Example- Location 17 L A = 38.4’ L 2 = 12.0’ (11’ + 1’) Y= Y = L 2 + 0.75’ Y = 12.0’ + 0.75’ = 12.75’ Obstacles BP Bridge_Pier_Station = BPBP = (132+35.72) EC Embankment_Cone_Station = ECEC = (132+18.58) L AOC = BP-EC L AOC = 17.14’ (assumes that EC ends at BP) Length of Need – Graphical Solution Tangent Runout Path from EC = 474.85’ Tangent Runout Path = 474.85 > L R = 300.0’ Therefore, use L R to determine upstream end of the runout path X = Calculated Graphically = 166.65’ 69

70. Level 2 Example- Location 17 Point of Need = PON PON = EC – X PON = (132+18.58) – 166.65’ PON = (130+51.93) Length of Need = LON LON = X + L AOC LON = 166.65’ + 17.14’ LON = 183.79’ 70

71. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offset f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 71

72. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslope g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 72

73. Level 2 Example- Location 17 Terminals Terminal = Type T6B T6B = 43.15’ (counts toward length of need) Terminal = Type T1 (Special) = T1 = 50.0’ (37.5’ counts toward length of need) Barrier Limits Determination Length of Guardrail L Guardrail = LON – T6B – T1 L Guardrail = 183.79’ – 43.15’ – 37.5’ L Guardrail = 103.14’ L Guardrail, R = L Guardrail (Round up to the neareast 12.5’ increment) L Guardrail, R = 112.5’ 73

74. Level 2 Example- Location 17 T6B End_Station = BP T6B End_Station = (132+35.72) GR End_Station = End T6B Station – 43.15’ GR End_Station = (132+35.72) – 43.15’ GR End_Station = (131+92.57) GR Begin_Station = GR End_Station – L Guardrail,R GR Begin_Station = (131+92.57) – 112.5’ GR Begin_Station = (130+80.07) T1 Begin_Station = GR Begin_Station – 50’ T1 Begin_Station = (130+80.07) – 50’ T1 Begin_Station = (130+30.07) 74

75. Barrier Limits Check: 12.5’ < |PON – T1 Begin_Station |< 25’ 12.5’ < |(130+51.93) – (130+30.07)| < 25’ 12.5’ < 21.86’ < 25’ 75

76. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zone h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 76

77. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zonep. Compare existing length to proposed h. Clear Zone Adjustment i. Lateral Extent of the Area of Concern 77

78. Each AOC shall be analyzed separately. a. Establish EOTWj. Warrant Analysis Level b. Design Speedk. Lateral Offset of Barrier c. Design ADTl. Upstream End of Guardrail d. Length of Runoutm. Upstream End of Barrier Wall e. Shy Line Offsetn. Downstream Terminal f. Foreslope / Backslopeo. Barrier Obstacle g. Clear Zonep. Compare existing length to proposed h. Clear Zone Adjustmentq. Prepare warrant text and exhibits i. Lateral Extent of the Area of Concern 78

79. Level 2 Example- Location 17 – Site Plan 79

80. Questions? 80

81. Example-Speed Profile 81

82. Site Plan 82

83. Acceleration Table Table 10-3 Minimum Acceleration Lengths for Entrance Terminals with Flat Grades of Two Percent or Less 83

84. Example-Speed Profile-Site Plan 30 MPH 40 MPH 50 MPH 60 MPH 70 MPH 84

85. Level 3 Example – Overhead Sign Truss 85

86. Level 3 Example – Plan 86

87. Flowchart for Analysis of Proposed Obstacles (Figure 5.5b) 87

88. New Overhead Sign Truss (Span and Cantilever) Article 5.5.9 The Designer shall perform a Level 3 Analysis to determine the most cost-effective design for all new overhead sign installations. The alternatives at minimum to evaluate shall include: (1) base condition – shortest span or arm with shielding; (2) span or arm length which places foundation outside defined clear zone with no shielding or if clear zone is undefined places foundation such that the criteria in Table 5.6.1 is met; (3) longer span or arm which places foundation well outside the clear zone with no shielding. 88

89. Level 3 Example – Overhead Sign Truss Analyze 4 Alternatives for Sign Foundation (Assumes Clear Zone is defined) 1.Base Condition: Foundation Shielded by Guardrail 2.Foundation Beyond Clear Zone, not shielded 3.Foundation on Backslope, not shielded 4.Foundation on Backslope, not shielded (max. length truss) 89

90. Level 3 Example – Plan 90

91. Level 3 Example – Cross Section 91

92. Level 3 Example – Cross Section 92

93. Level 3 Example – Cross Section 93

94. Level 3 Example – Cross Section 94

95. Sign Structure Foundation 95

96. Level 3 Example – Feature Sketch 96

97. Level 3 Example – Guardrail Calculation 97

98. Level 3 Example – Guardrail Calculation 98

99. Level 3 Example – Guardrail Calculation 99

100. Level 3 Example – Estimated Costs 100

101. Cost Tab 101

102. Highway Tab 102

103. Segments Tab 103

104. Features Tab 104

105. View Pulldown 105

106. View/ Crash Cost 106

107. View/ Crash Cost/ KABCO 107

108. Options/ Units 108

109. Option/ Edit Feature 109

110. Option/ Edit Feature 110

111. Edit Feature 111

112. Features/ Category 112

113. Features / Category/ User Defined 113

114. Feature/ Types 114

115. RSAP Output 115

116. RSAP Output 116

117. RSAP Output 117

118. RSAP Output 118

119. RSAP Output 119

120. RSAP Output 2 vs. 3 3 vs. 4 4 vs. 1 120 3 is better 4 is better

121. AOC’s in Close Proximity

122. 14+25 Culvert - AOC #1 14+00 17+22 Cantilever Sign- AOC #2 15+70 16+12.5 17+05 Upstream Terminal End 18+30 18+42.5 Downstream Terminal End Upstream Terminal End Downstream Terminal End 92.5’ Gap Total Length of Need = 405’ EOTW AOC’s in Close Proximity 122 PON 16+00 18+27 14+05

123. Example- AOC Table Format AOC#UPSTREAM US TERM PONDS End of Guardrail DOWNSTREAM DS TERM GAP (FT) OVERLAP (FT) 114+0014+2516+0016+12.50 92.50--- 217+0517+2218+3018+42.50 123

124. Summary Calculation LON = AOC #2 DS End of GR – AOC #1 PON = (18+30)-(14+25) = 405’ Terminals DS Terminal= TBT Type T2=T2 US Terminal= TBT Type T1=T1 124

125. Barrier Limits Determination L Guardrail = LON-T1 = 405’-37.5’ = 367.5’ L G, rounded = 367.5/12.5’ = 29.4, round to 30 sections 30 x 12.5’ = 375’ T2 end = DS End of GR+ 12.5’=18.30 + 12.5’= 18+42.5 Gr end = AOC #2 DS End of GR = 18+30 Gr begin = Gr end - L G, rounded = 18+30 - 375’ = 14+55 T1 end = Gr begin = 14+55 T1 begin = T1 end - 50’ = 14+55-50’ = 14+05 125

126. Barrier Limits Check 12.5’ < AOC #1 PON – T1 begin < 25’ AOC #1 PON – T1 begin 14+25-14.05= 20’ Provide a Summary Site Plan 126

127. 14+25 Culvert - AOC #1 14+00 17+72 Cantilever Sign- AOC #2 15+70 16+12.5 17+55 Upstream Terminal End 18+80 18+92.5 Downstream Terminal End Upstream Terminal End Downstream Terminal End 142.5’ Gap EOTW AOC’s in Close Proximity 127 PON 16+00 18+77 Length of Need Length of Need

128. 14+25 Culvert - AOC #1 14+12.5 16+22 Cantilever Sign- AOC #2 15+70 16+12.5 16+05 Upstream Terminal End 17+30 17+42.5 Downstream Terminal End Upstream Terminal End Downstream Terminal End 7.5’ Overlap Total Length of Need EOTW AOC’s in Close Proximity 128 PON 16+00 17+27 14+17.5

129. Example- AOC Summary Table Format LEGEND POINT OF NEED STATION DOWNSTREAM END OF GUARDRAIL STATION AOC SUMMARY TABLE AOC 115+0026+00 AOC 215+0022+50 AOC 316+2527+00 AOC 4 19+00 23+00 SUMMARY15+0027+00 TOTAL LON15+00 to 27+00 = 1,200 FT

130. AOC- Color Coded System

131. Questions? 131