good reference or book on underpinning and earth retention
 

good reference or book on underpinning and earth retention
i haven't had much experience in earth retention, underpinning, and micorpiles. i was in a meeting yesterday and there was a lot of talk about these issues. does anyone know of a good book that talks about these topics and concepts? i'm not very familiar with this type of stuff and would like to read up on it.