Sometimes it's necessary to add to your reports several drawings in order to facilitate the comprehension of the calculus and data. LaTeX can solve this issue without using any external software but only through the Graphics packages. I show you how TikZ-MEC, a custom library written by Francesco Clemente, can help in the description of mechanical problems related to (internally and externaly) loaded structures.
Two years ago I had to make many traffic surveys along a big road in Rovigo city during the rush hours: in the early morning and in the late afternoon. I simply had had to count the numbers of cars and long vehicles in the two directions of travel and in preset positions and times (15 minutes per station). To do this I wrote a Python program for my phone: a Nokia N78 (equipped with Symbian 60v3). Here is the full story, code and how it worked.
The work was easy but stressful and repetitive: