1. WELCOME TO THE
WEBINAR
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2. Enhancements to AASHTOWare Pavement ME® Design:
FY15 Enhancements
Enhancements to AASHTOWare Pavement ME® Design:
Version 2.2
Welcome everyone to the webinar.

3. Moderators: Presenters:
AASHTOWare: Pavement ME Design
FY15 Enhancements
Moderators:
Presenters:
Judith Corley-Lay; NCDOT and Chairperson, AASHTOWare ME Design Task Force
Vicki Schofield, AASHTO
Harold L. Von Quintus, P.E., ARA
Michael I. Darter, P.E., ARA
Presentation will be available for viewing on the ME-Design Resource website:
Suggest Judy Corley-Lay do the introductions to the webinar.

4. Task Force Members: Judith Corley-Lay; NCDOT, Chairperson
AASHTOWare: Pavement ME Design
FY15 Enhancements
Task Force Members:
Judith Corley-Lay; NCDOT, Chairperson
Vicki Schofield, AASHTO Project Manager
John Donahue, Missouri DOT
William Barstis, Mississippi DOT
Jay Goldbaum, Colorado DOT
Marta Juhasz, Alberta Transportation
Mehdi Parvini, California DOT
Felix Doucet, TAC Liaison
Gary Crawford/Tom Yu, FHWA Liaison
Just a listing of the task force members and participants on the task force.

5. AASHTOWare: Pavement ME Design
FY15 Enhancements
Announcements:
2nd Edition of the MEPDG Manual of Practice is now available through the AASHTO Bookstore.
Webinars are planned for software releases that include enhancements which impact the predicted distresses.
AASHTO is performing a Technical Audit of the software in FY16, which is schedule for completion in February 2016.
Announcements related to activities on-going this fiscal year. Key on the technical audit authorized by the task force.

6. Process for Revising the Software:
AASHTOWare: Pavement ME Design
FY15 Enhancements
Process for Revising the Software:
Suggested revisions are received from users and AASHTO members.
ME Design Task Force monitors on-going/completed NCHRP, FHWA, and pool fund projects applicable to the MEPDG.
ME Design Task Force members review and prioritize all potential suggested revisions and enhancements.
Summary of the key activities of the task force for deciding on what enhancements get done.

7. Topics: Enhancements Uploading Old Project Files Questions and Answers
AASHTOWare: Pavement ME Design
FY15 Enhancements
Topics:
Enhancements
What is the enhancement?
Explained through addendum
How to access/use the enhancement?
What is the impact on the predicted distress?
Uploading Old Project Files
Questions and Answers
Harold and Mike take over from here.

8. AASHTOWare: Pavement ME Design
FY15 Enhancements
Addendum are available through the ME-Design Resource Website for downloading the software:

9. Topics: Enhancements:
AASHTOWare: Pavement ME Design
FY15 Enhancements
Topics:
Enhancements:
AC Layer Dependent Plastic Deformation Coefficients
New PCC Calibration Coefficients
New Normalized Axle Load Spectra Defaults
Rehabilitation Input Levels 1 & 2 for PCC Overlay of Flexible Pavements
Reflection Cracking Transfer Functions
Uploading Old Project Files
Questions and Answers

10. AC Layer Dependent Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
Enhancement:
AC Layer Dependent Plastic Deformation Coefficients
Enhancement added in FY2014 and included in software release 2.1
NCHRP Project 9-30A; Report #719
Addendum #FY15.2

11. AC Layer Dependent Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
AC Layer Dependent Plastic Deformation Coefficients
Version 1.1 and earlier versions:
One set of plastic deformation coefficients assumed for all AC layers, regardless of the properties.
Version 2.1 enhancement:
Plastic deformation coefficients can be entered for each AC layer (new and existing AC layers).

12. AC Layer Dependent Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
AC Layer Dependent Plastic Deformation Coefficients
AC Layer Properties

13. AC Layer Dependent Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
AC Layer Dependent Plastic Deformation Coefficients

14. AC Layer Dependent Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
AC Layer Dependent Plastic Deformation Coefficients
Project Calibration Coefficients

15. Plastic Deformation Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
Plastic Deformation Coefficients
Addendum #FY15.2:
Determining the plastic deformation coefficients

16. Minimal to moderate impact on rutting.
AASHTOWare: Pavement ME Design
FY15 Enhancements
AC Layer Dependent Plastic Deformation Coefficients
Coefficient
Global
Mixture
Layer 1
Layer 2
Kr1
-3.35
-2.25
-1.95
Kr2
1.5605
Kr3
0.4791
0.30
Layer dependent plastic deformation coefficients:
Minimal to moderate impact on rutting.

17. New LTPP Normalized Axle Load Spectra Defaults
AASHTOWare: Pavement ME Design
FY15 Enhancements
Enhancement:
New LTPP Normalized Axle Load Spectra Defaults
LTPP/FHWA Pool Fund Study
Olga Selezneva, Principal Investigator
Addendum #FY15.1

18. Version 2.1 and earlier versions:
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
Version 2.1 and earlier versions:
One set of default NALS was included in software; developed from NCHRP Project 1-37A.
NCHRP 1-37A default NALS represents overall average from WIM sites in all functional classes; questions were raised about its accuracy.
Version 2.2 enhancement:
LTPP defined WIM sites as their “gold standard;” primarily interstate WIM sites used to generate LTPP default NALS.
4 NALS added as default NALS in the software.

19. New LTPP NALS Defaults How to retrieve the additional LTPP NALS?
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
How to retrieve the additional LTPP NALS?
LTPP NALS included under “Traffic” tab.

20. New LTPP NALS Defaults Addendum #FY15.1 Four LTPP NALS:
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
Four LTPP NALS:
1.Global 3. Typical
2.Heavy 4. Light
Addendum #FY15.1

21. New LTPP NALS Defaults How different are the additional NALS?
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
How different are the additional NALS?
Minor difference between typical and global LTPP NALS.

22. Biggest difference is for cracking.
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
NCHRP 1-37A
LTPP Global
LTPP Heavy
LTPP Typical
LTPP Light
Biggest difference is for cracking.
What difference do the new NALS make in the flexible pavement distress predictions?

23. Biggest difference is for cracking.
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
NCHRP 1-37A
LTPP Global
LTPP Heavy
LTPP Typical
LTPP Light
Biggest difference is for cracking.
What difference do the new NALS make in the rigid pavement distress predictions?

24. AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
NCHRP 1-37A default NALS and LTPP Heavy NALS result in about the same predicted distress.
Other LTPP NALS result in less distress.

25. No impact on predicted distress.
AASHTOWare: Pavement ME Design
FY15 Enhancements
New LTPP NALS Defaults
Use of global NALS or agency local NALS:
No impact on predicted distress.

26. Poll Questions #1, #2, and #3. AASHTOWare: Pavement ME Design
FY15 Enhancements
Poll Questions #1, #2, and #3.

27. New PCC Calibration Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
Enhancement:
New PCC Calibration Coefficients
NCHRP 20-24, Task 325
Dr. Julie Vandenbossche, Principal Investigator
Addendum #FY15.3

28. New PCC Calibration Coefficients Version 2.1 and earlier versions:
AASHTOWare: Pavement ME Design
FY15 Enhancements
New PCC Calibration Coefficients
Version 2.1 and earlier versions:
JPCP & CRCP calibration coefficients and standard deviation equations were based on results from CTE test method that was found to be in error (over prediction of CTE about 0.8).
CTE method was revised and corrected (AASTHO 336).
NCHRP 20-24, Task 325 evaluated and recommended a revised set of calibration coefficients and standard deviation equations using the revised (correct) CTE test method.

29. New PCC Calibration Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
New PCC Calibration Coefficients
Version 2.2 enhancement:
New JPCP & CRCP global calibration coefficients and standard deviation equations from Task 325 replaced the older set of values.
Now, a designer must enter the “correct” CTE values and use the new global calibration coefficients and standard deviations.

30. New PCC Calibration Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
New PCC Calibration Coefficients
Version 2.2 enhancement:
States that have locally calibrated using the “correct” CTE values should continue to use these local calibration coefficients and standard deviations (e.g., Arizona, Colorado, Georgia, Mississippi, Utah, Wyoming, etc.) and inputting the “correct” CTE values.

31. New JPCP Calibration Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
New JPCP Calibration Coefficients
NCHRP 20-24, Task 325
Addendum #FY15.3

32. New CRCP Calibration Coefficients
AASHTOWare: Pavement ME Design
FY15 Enhancements
New CRCP Calibration Coefficients
NCHRP 20-24, Task 325
Addendum #FY15.3

33. Impact of New Global Calibration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Impact of New Global Calibration
Version 2.2 new global calibration for JPCP and CRCP should not result in significantly different designs on average since the same field sections with the same performance trends were used.
Of course, some designs will be a little thicker and some thinner due to variations involved.

34. AASHTOWare: Pavement ME Design
FY15 Enhancements
Enhancement:
Rehabilitation Input Levels 1 & 2 for PCC Overlays of Flexible Pavements

35. Version 2.1 and earlier versions:
AASHTOWare: Pavement ME Design
FY15 Enhancements
Rehabilitation Input Levels 1 & 2 for PCC Overlays of Flexible Pavements
Version 2.1 and earlier versions:
Only rehabilitation input level 3 could be used for PCC overlays of flexible pavements, while rehabilitation input levels 1, 2, & 3 were used for AC overlays.
Version 2.2 enhancement:
Rehabilitation input levels 1, 2, and 3 are applicable for both PCC and AC overlays of flexible pavements.
Level 1: Backcalculate HMA “Damaged” Modulus
Level 2: Enter % Alligator Cracking (not patched)
Level 3: Enter Ratting: “Good”, “Fair”, etc.

36. Rehabilitation Input Levels 1 & 2 for PCC Overlays
AASHTOWare: Pavement ME Design
FY15 Enhancements
Rehabilitation Input Levels 1 & 2 for PCC Overlays
AC Layer Properties

37. Rehabilitation Input Levels 1 & 2 for PCC Overlays
AASHTOWare: Pavement ME Design
FY15 Enhancements
Rehabilitation Input Levels 1 & 2 for PCC Overlays
No addendum for this enhancement, because rehab input levels 1 and 2 are the same as for AC pavements.

38. Rehabilitation Input Level 1 for PCC Overlays
AASHTOWare: Pavement ME Design
FY15 Enhancements
Rehabilitation Input Level 1 for PCC Overlays
Rehabilitation Input Level 1: HMA Modulus from backcalculation in cracked areas

39. Rehabilitation Input Levels 1 & 2 for PCC Overlays
AASHTOWare: Pavement ME Design
FY15 Enhancements
Rehabilitation Input Levels 1 & 2 for PCC Overlays
Use of rehab. input levels 1 & 2, in comparison to level 3 :
No impact on bias of predicted PCC distress.

40. Reflection Cracking Transfer Function from NCHRP 1-41
AASHTOWare: Pavement ME Design
FY15 Enhancements
Enhancement:
Reflection Cracking Transfer Function from NCHRP 1-41
NCHRP Project 1-41
Dr. Robert L. Lytton, Principal Investigator
Addendum #FY15.4

41. Reflection Cracking Transfer Function from NCHRP Project 1-41
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Transfer Function from NCHRP Project 1-41
Version 2.1 and earlier versions:
Prediction of reflection cracks was based on an empirical regression equation and only applicable to load-related cracks.
Version 2.2 enhancement:
Integrated the ME based fracture mechanics model in the software for predicting reflection cracks.
Applicable to load and non-load related cracks of flexible, semi-rigid, intact PCC, and fractured PCC pavements.

42. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Based on results and methodology developed from NCHRP Project 1-41
A special thank you to:
Bob Lytton and Sheng Hu (Texas Transportation Institute) provided a lot of information and explanation on the models/equations.
Halil Ceylan completed the neural networks; the final product was not possible without Halil’s effort and assistance.

43. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Documents:
Addendum #FY15.4
Enhancement has a large impact on the total predicted cracking for AC overlays and existing AC pavements.

44. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Expanded Pavement Design Types:
Overlay Design with Seal Coats
Overlay Design with Interlayers
Overlay of Semi-Rigid Pavements

45. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Performance Criteria:
AC overlay of AC pavement
AC overlay & seal coat of AC pavement
AC overlay & interlayer of AC pavement
AC overlay of AC pavement

46. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Performance Criteria:
AC overlay of Intact JPCP
AC overlay of Fractured JPCP
AC overlay of CRCP

47. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Performance Criteria:
Semi-rigid pavement
AC overlay of semi-rigid pavement

48. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Software now considers fatigue and transverse cracks separately.
AC over Semi-Rigid
AC over AC

49. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
AC over Fractured JPCP
Software now considers crack spacing in fractured slab and load transfer efficiency of cracks.

50. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Semi-Rigid Pavements:

51. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Sensitivity of load transfer efficiency or crack severity:

52. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Example, Overlay of Flexible Pavement

53. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Example, Overlays of Intact and Fractured JPCP

54. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Example, New Semi-Rigid Pavement

55. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Calibration Coefficients, AC over Flexible Pavements:
Fatigue Cracks
Transverse Cracks

56. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Calibration Coefficients, AC over JPCP:
Transverse Cracks

57. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Calibration Coefficients, AC over Fractured JPCP/CRCP:
Transverse Cracks

58. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Calibration Coefficients, AC over Semi-Rigid Pavements:

59. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Calibration Coefficients, Semi-Rigid Pavements:

60. Reflection Cracking Integration
AASHTOWare: Pavement ME Design
FY15 Enhancements
Reflection Cracking Integration
Observation from calibration sites:
Seal coats and interlayers do not result in significant difference in reflection cracking from AC over AC.
Important to verify predictions using agency specific data.

61. Topics: Enhancements: Uploading Old Project Files
AASHTOWare: Pavement ME Design
FY15 Enhancements
Topics:
Enhancements:
Uploading Old Project Files
Questions and Answers

62. Uploading Old Project Files
AASHTOWare: Pavement ME Design
FY15 Enhancements
Uploading Old Project Files
When opening an old project file for:
New design, there should be no differences.
Rehabilitation, difference will be with:
Amount of fatigue and transverse cracks in the existing pavement.
Load transfer efficiency of cracks in the existing layer.
Calibration factors.

63. Uploading Old Project Files
AASHTOWare: Pavement ME Design
FY15 Enhancements
Uploading Old Project Files
Open an old project in ME Design
Click the “+” sign next to “ME Design Calibration Factors” node
For AC overlay projects, double click “Rehabilitation Flexible” node
For New AC projects, double click “New Flexible” node

64. Uploading Old Project Files
AASHTOWare: Pavement ME Design
FY15 Enhancements
Uploading Old Project Files
Click “Update Open Projects” tab at the bottom of the window

65. Poll Questions #4 and #5. AASHTOWare: Pavement ME Design
FY15 Enhancements
Poll Questions #4 and #5.

66. Question and answer Session
AASHTOWare: Pavement ME Design
FY15 Enhancements
Question and answer Session
We welcome comments & suggestions for future webinars.

67. Thank you for Attending the Webinar!
AASHTOWare: Pavement ME Design
FY15 Enhancements
Thank you for Attending the Webinar!
AASHTOWare Pavement ME-Design Contacts:
Vicki Schofield, AASHTO
Phone: (202)
Judith Corley-Lay, NCDOT
ME Design Resource Website
Help Desk, Customer Support:
ARA Staff:
Deepak Raghunathan, ARA Inc.
Phone: (217)
Biplab Bhattacharya, P.E.
Other ARA Staff:
Chad Becker
Harold Von Quintus, P.E.
Michael I. Darter, P.E.