Being that my land is still sliding down a hill- helical piles look to be the answer
here is a complete design guide including dwgs where they could be used as the posts in a post and beam aplication.
yes manufacturer supplied but still aplicable to other products.
diagrams are in the rear of the document
http://www.helipile.com/pdf/DesignGuide4Rev2.pdf (http://www.helipile.com/pdf/DesignGuide4Rev2.pdf)