Tower Numerics (TNX) is the developer of industry standard software for tower analysis and design. Their software is built from the ground up for the tower industry, and has been proven and refined over twelve years. The program started as ERI Tower, when it was written by the industry pioneer Dan Horn in response to the need for a dedicated and powerful, yet easy to use package for tower analysis and design. Peter Chojnacki was working at RISA Technologies when they acquired ERI Tower. He wrote numerous features of what became known as RISATower as users came up with design issues that required advanced modelling techniques.
TNX on the art of tower design
