IRVING, TX - The Plastics Pipe Institute, Inc. (PPI) today announced it has released a new, free, online software tool that aids in designing plastic pressure pipe systems using PEX, PE-RT and CPVC.

The Structural Wood Design Calculator is for the iPhone or iPod Touch. It is a tool for engineers, architects, and builders, as well as students to design wood beams for strength in bending, shear, ...