BAKFAA 3.4.3.2 was available as a free download on our software library. You can install this free PC program on Windows XP/Vista/7/8/10/11 32-bit. The most popular versions of the software 2.1, 2.0 and 1.1. This free software is a product of Federal Aviation Administration. The program lies within Education Tools, more precisely Science Tools. BackC.exe and BAKFAA.exe are the most common filenames for this program's installer.
From the developer:
BAKFAA is a program that performs back calculation of pavement layer modulus values using the FAA layered elastic analysis program LEAF and a downhill multidimensional simplex minimization method. The program can process any number of deflection records at a time, it exports batch calculation results into CSV files and it presents a graph of batch calculation results.
You may want to check out more software, such as Solmetric SunEye, CAP 540 or NI-DAQ, which might be similar to BAKFAA.