LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements (2024)
Chapter: Appendix A: Agency Survey and Responses
Visit
NAP.edu/10766
to get more information about this book, to buy it in print, or to
download it as a free PDF.
Previous Chapter:
References
Suggested Citation:
"Appendix A: Agency Survey and Responses." National Academies of Sciences, Engineering, and Medicine. 2024. LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements. Washington, DC: The National Academies Press.
doi: 10.17226/28570.
APPENDIX A
Agency Survey and Responses
Falling Weight Deflectometer Survey and Results
- Responding agencies
Agencies Total Alaska, California, Connecticut, Delaware, Florida, Georgia, Maryland, Minnesota, Missouri, Montana, Nebraska, Nevada, New York State, Ohio, Oregon, South Dakota, Texas, Washington State, and Wisconsin 19 - FWD testing is conducted at the:
Response Agencies Total Project level Alaska, California, Connecticut, Georgia, Maryland, Missouri, Nebraska, Nevada, New York State, Ohio, Oregon, and South Dakota 12 Network level None 0 Project and network level Florida, Minnesota, Montana, and Texas 4 Not applicable Delaware, Washington State, and Wisconsin 3 - Do you maintain a seasonal monitoring program?
Response Agencies Total Yes None 0 No Alaska, California, Connecticut, Florida, Georgia, Maryland, Minnesota, Missouri, Montana, Nebraska, Nevada, New York State, Ohio, Oregon, South Dakota, and Texas 16 - What items are monitored?
No responses.
- Do you determine subsurface pavement temperature for FWD measurements?
Response Agencies Total Yes California, Montana, Nevada, and Ohio 4 No Alaska, Connecticut, Florida, Georgia, Maryland, Minnesota, Missouri, Nebraska, New York State, Oregon, South Dakota, and Texas 12
Suggested Citation:
"Appendix A: Agency Survey and Responses." National Academies of Sciences, Engineering, and Medicine. 2024. LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements. Washington, DC: The National Academies Press.
doi: 10.17226/28570.
- How is subsurface pavement temperature determined?
Response Agencies Total Field measurements Montana 1 Prediction models California and Nevada 2 Air temperature Ohio 1 - What procedure is used for temperature correction/prediction?
Response Agencies Total AASHTO 93 Guide Nevada and Ohio 2 BELLS(2 or 3) California, Montana, and Nevada 3 - Do you determine subsurface pavement moisture for FWD measurements?
Response Agencies Total Yes None 0 No Alaska, California, Connecticut, Florida, Georgia, Maryland, Minnesota, Missouri, Montana, Nebraska, Nevada, New York State, Ohio, Oregon, South Dakota, and Texas 16 - How is subsurface pavement moisture determined?
No responses.
- If What procedure is used for moisture correction?
No responses.
- Please provide comments related to your organization’s successful practices and lessons learned regarding incorporating seasonal and diurnal adjustments to FWD measurements.
No responses.
- Please indicate potential challenges for using seasonal and diurnal adjustments of FWD measurements in pavement design activities (select all that apply).
Response Agencies Total Unsure how to use/apply adjustments California, Connecticut, Georgia, Maryland, Nebraska, Nevada, New York State, Oregon, and Texas 9 Adjustments not needed Florida, Minnesota, Nevada, and Ohio 4 Limited budget Alaska, California, Missouri, Oregon, and Texas 5 Limited time Alaska, California, Georgia, Missouri, Montana, New York State, Oregon, South Dakota, and Texas 9 Comments:
- LTPP SMP data does not show large variability in seasonal moisture content. Note: very low subgrade modulus in the spring are due to frost-heave related thaw effects and may not be applicable in all climates and pavement types (thickness of non-frost susceptible material).
Suggested Citation:
"Appendix A: Agency Survey and Responses." National Academies of Sciences, Engineering, and Medicine. 2024. LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements. Washington, DC: The National Academies Press.
doi: 10.17226/28570.
Longitudinal Profile Survey and Results
- Responding Agencies
Agencies Total Alabama, California, Connecticut, Delaware, Florida, Georgia, Indiana, Kentucky, Maryland, Mississippi, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, and Utah 21 - Profile testing is conducted on the:
Response Agencies Total NHS Alabama, California, Connecticut, Delaware, Florida, Georgia, Kentucky, Maryland, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, and Utah DOT 19 Non-NHS Alabama, California, Connecticut, Delaware, Florida, Kentucky, Maryland, Nevada, New York State, North Dakota, Ohio, Rhode Island, South Carolina, South Dakota, and Utah DOT 15 Project-level (ride specification) Alabama, California, Connecticut, Delaware, Florida, Georgia, Indiana, Kentucky, Maryland, Mississippi, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, South Dakota, and Utah DOT 19 - Do you maintain a seasonal monitoring program?
Response Agencies Total Yes None 0 No Alabama, California, Connecticut, Delaware, Florida, Georgia, Indiana, Kentucky, Maryland, Mississippi, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, and Utah 21 - What items are monitored?
No responses.
- Do you measure slab curling and warping?
Response Agencies Total Yes Florida (strain gauges installed in our new concrete research test road) 1 No Alabama, California, Connecticut, Delaware, Georgia, Indiana, Kentucky, Maryland, Mississippi, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, and Utah 20 - How do you measure slab curling and warping
No responses.
Suggested Citation:
"Appendix A: Agency Survey and Responses." National Academies of Sciences, Engineering, and Medicine. 2024. LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements. Washington, DC: The National Academies Press.
doi: 10.17226/28570.
- Do you adjust longitudinal profile measurements?
Response Agencies Total Yes Maryland 1 No Alabama, California, Connecticut, Delaware, Georgia, Indiana, Kentucky, Mississippi, Nevada, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, and Utah 20 - Longitudinal profile measurements are adjusted for?
Response Agencies Total Temporal effects Georgia and Kentucky 2 Diurnal effects None 0 - How do you correct longitudinal profile measurements?
No responses.
- If yes to Question 7, please provide comments related to your organizations successful practice and lessons learned for incorporating diurnal and seasonal adjustments to longitudinal profile measurements.
No responses.
- Please indicate potential challenges for using seasonal and diurnal adjustments of longitudinal profile measurements in pavement management activities.
Response Agencies Total Unsure how to use/apply adjustments California, Connecticut, Florida, Kentucky, Maryland, New York State, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, and South Carolina 14 Adjustments deemed to not be needed Alabama, New York State, North Dakota, and Ohio 4 Limited budget California, Florida, Georgia, New York State, North Dakota, Pennsylvania, and Rhode Island 7 Limited time California, Florida, Georgia, Kentucky, New York State, Oregon, and Pennsylvania 7 Comments:
- Very few miles of JPCP (Alabama and Orego
Subscribe to Emails from the National Academies
Stay up to date on activities, publications, and events by subscribing to email updates.