1. Presented to: 2012 FAA Airport Pavement Working Group Meeting By: Al Larkin, FAA Airport Technology R & D and Josh Davis, SRA Date: April 25, 2012 Federal Aviation Administration FAA Falling/Heavy Weight Deflectometer Roundup at the National Airport Pavement Test Facility

2. 2 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Objectives Compare F/HWD with single wheel module in both static and dynamic modes

3. 3 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Roundup Objectives Compare backcalculated pavement material properties using available backcalculation programs, Evaluate specifications and methodologies for existing FWD-HWD equipment for use in pavement design and construction.

4. 4 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Evaluate deflection and time history data of different equipment. Objectives

5. 5 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Overview of F/HWD Deflections

6. 6 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 FAA KUAB HWD

7. 7 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 MDD Under Static Loading 05Oct2010,09 -36 -01,s6c1m4.bin -- MDD-2 – STATIC LOAD

8. 8 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Pressure Cell Under Static Loading 05Oct2010,09 -10 -25,s6c1m2.bin – PC-1 -- STATIC LOAD

9. 9 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Strain Gage Under Static Loading 05Oct2010,10 -25 -50,s6c1m3.bin SG-1 - STATIC LOAD

10. 10 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Future Enhancements Provide F/HWD pavement response data; strain gages, MDD’s, and pressure cells, Provide vehicle trafficking pavement response data, In March 2012, F/HWD raw time history data was uploaded to the website.

11. 11 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 NAPTF Website www.airporttech.tc.faa.gov/naptfwww.airporttech.tc.faa.gov SelectNews Open 2010 HWD - FWD Round-up

12. 12 Federal Aviation Administration FAA F/HWD ROUND-UP UPDATE April 25, 2012 Contact Information Al Larkin Federal Aviation Administration William J. Hughes Technical Center National Airport Pavement Test Facility Phone: (609) 485 – 5552 Email: albert.larkin@faa.gov