I'm looking for some advice on a project I'm working on for a friend. He bought a piece of land that has a pretty steep valley (about 40 ft across and 20 ft down) on it but on the other side is more land to utilize. He wants to build a bridge to conveniently get to the other side. We were wondering what's a good piece of stress analysis software?
Also, there is another friend that wanted to see if there was any software that would compare vehicle frames built with like rectangular vs. tubular materials. If there's a program that encompasses everything then great, if not I would like your thoughts on software that will help with either section.