My brother in law designs sprinkler systems for large buildings. When he is done with the file he stores it in a cad library that his company has in place to keep all of its data secure for any type of future reference. I do not think that there has ever been any problem with an installation of the systems but if there ever was then because the files are saved they can go back and see what is wrong.
I cant believe how time flies. I am posting this picture because I did not get the chance to post my sons birthday cake last month. I just wanted to share how happy and proud I am to have my youngest son in our lives. Hurrah, he is now 3. Love you Ben!!!