The PDF version of "Railway Engineering" by Rangwala is available online. However, I would like to clarify that downloading copyrighted materials without permission is illegal. It's always recommended to purchase the book from a reputable source or obtain a digital copy from a legitimate provider.
The textbook details the "permanent way," which refers to the combination of rails, sleepers, and ballast that forms the finished track. engineering-material-book-by-rangwala compress.pdf 28 Oct 2021 — railway engineering by rangwala pdf