I am going to build a concrete and beam foundation cabin in west Texas and have a few questions for someone who knows something about this type of construction. The cabin in going to be 16'X 24'on sandy soil. How many concrete pillars do I need, what diameter should they be, how far down should I put them and should they be placed to where the sill will match up sides with the beams or can the beams be inset from the floor joists? I know this is a lot to answer but I am determined to do this and cannot find any specifics on this size cabin. Please respond!