The Internet Archive (Archive.org) often has a scanned copy available for borrowing . You must create a free account. You cannot download it permanently, but you can read the entire book online for 1 hour at a time. This is the only legal way to view a scanned PDF for free.
Chelsea Green sells an official eBook (ePub/PDF hybrid). It is not free (approx. $29.99), but you get high-resolution photos, searchable text, and the author’s approval. This is the closest you can get to a legitimate the rammed earth house david easton pdf
The reason so many people search for is that the physical realities of building are complex, and the book provides a roadmap that covers every stage of the process. It is not just a coffee table book of pretty homes, though it features stunning photography; it is a technical manual. The Internet Archive (Archive