You could have downloaded UTrAp 2.0 from our software library for free. This free program was originally developed by University of Texas at Austin. The program lies within Education Tools, more precisely Science Tools. The most popular version among UTrAp users is 2.0. The program's installer file is generally known as UTrAp 2.0.exe.
From the developer:
UTrAp is a software package developed for pour sequence analysis of curved, trapezoidal steel box girders. Single and dual girder systems with a constant radius of curvature can be analyzed with this program. The software consists of a Graphical User Interface (GUI) and an analysis module. The analysis module relies on the finite element method to compute the response of a three-dimensional bridge structure.
You may want to check out more software, such as Maxima and Minima, IUCLID5 or Genotyper, which might be related to UTrAp.